SERVER-29593: Integrate the official JSON Schema test corpus into the unit tests

34 files changed, 2906 insertions, 0 deletions

diff --git a/src/third_party/JSON-Schema-Test-Suite/LICENSE b/src/third_party/JSON-Schema-Test-Suite/LICENSE
new file mode 100644
index 00000000000..c28adbadd91
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2012 Julian Berman
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/src/third_party/JSON-Schema-Test-Suite/README.md b/src/third_party/JSON-Schema-Test-Suite/README.md
new file mode 100644
index 00000000000..21f73322a03
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/README.md
@@ -0,0 +1,169 @@
+JSON Schema Test Suite [![Build Status](https://travis-ci.org/json-schema-org/JSON-Schema-Test-Suite.svg?branch=master)](https://travis-ci.org/json-schema-org/JSON-Schema-Test-Suite)
+======================
+
+This repository contains a set of JSON objects that implementors of JSON Schema
+validation libraries can use to test their validators.
+
+It is meant to be language agnostic and should require only a JSON parser.
+
+The conversion of the JSON objects into tests within your test framework of
+choice is still the job of the validator implementor.
+
+Structure of a Test
+-------------------
+
+If you're going to use this suite, you need to know how tests are laid out. The
+tests are contained in the `tests` directory at the root of this repository.
+
+Inside that directory is a subdirectory for each draft or version of the
+schema. We'll use `draft3` as an example.
+
+If you look inside the draft directory, there are a number of `.json` files,
+which logically group a set of test cases together. Often the grouping is by
+property under test, but not always, especially within optional test files
+(discussed below).
+
+Inside each `.json` file is a single array containing objects. It's easiest to
+illustrate the structure of these with an example:
+
+```json
+    {
+        "description": "the description of the test case",
+        "schema": {"the schema that should" : "be validated against"},
+        "tests": [
+            {
+                "description": "a specific test of a valid instance",
+                "data": "the instance",
+                "valid": true
+            },
+            {
+                "description": "another specific test this time, invalid",
+                "data": 15,
+                "valid": false
+            }
+        ]
+    }
+```
+
+So a description, a schema, and some tests, where tests is an array containing
+one or more objects with descriptions, data, and a boolean indicating whether
+they should be valid or invalid.
+
+Coverage
+--------
+
+Draft 3 and 4 should have full coverage. If you see anything missing or think
+there is a useful test missing, please send a pull request or open an issue.
+
+Who Uses the Test Suite
+-----------------------
+
+This suite is being used by:
+
+### Coffeescript ###
+
+* [jsck](https://github.com/pandastrike/jsck)
+
+### C++ ###
+
+* [Modern C++ JSON schema validator](https://github.com/pboettch/json-schema-validator)
+
+### Dart ###
+
+* [json_schema](https://github.com/patefacio/json_schema) 
+
+### Elixir ###
+
+* [ex_json_schema](https://github.com/jonasschmidt/ex_json_schema)
+
+### Erlang ###
+
+* [jesse](https://github.com/for-GET/jesse)
+
+### Go ###
+
+* [gojsonschema](https://github.com/sigu-399/gojsonschema) 
+* [validate-json](https://github.com/cesanta/validate-json)
+
+### Haskell ###
+
+* [aeson-schema](https://github.com/timjb/aeson-schema)
+* [hjsonschema](https://github.com/seagreen/hjsonschema)
+
+### Java ###
+
+* [json-schema-validator](https://github.com/daveclayton/json-schema-validator)
+* [everit-org/json-schema](https://github.com/everit-org/json-schema)
+* [networknt/json-schema-validator](https://github.com/networknt/json-schema-validator)
+
+### JavaScript ###
+
+* [json-schema-benchmark](https://github.com/Muscula/json-schema-benchmark)
+* [direct-schema](https://github.com/IreneKnapp/direct-schema)
+* [is-my-json-valid](https://github.com/mafintosh/is-my-json-valid)
+* [jassi](https://github.com/iclanzan/jassi)
+* [JaySchema](https://github.com/natesilva/jayschema)
+* [json-schema-valid](https://github.com/ericgj/json-schema-valid)
+* [Jsonary](https://github.com/jsonary-js/jsonary)
+* [jsonschema](https://github.com/tdegrunt/jsonschema)
+* [request-validator](https://github.com/bugventure/request-validator)
+* [skeemas](https://github.com/Prestaul/skeemas)
+* [tv4](https://github.com/geraintluff/tv4)
+* [z-schema](https://github.com/zaggino/z-schema)
+* [jsen](https://github.com/bugventure/jsen)
+* [ajv](https://github.com/epoberezkin/ajv)
+* [djv](https://github.com/korzio/djv)
+
+### Node.js ###
+
+The JSON Schema Test Suite is also available as an
+[npm](https://www.npmjs.com/package/json-schema-test-suite) package.
+Node-specific support is maintained on the [node branch](https://github.com/json-schema-org/JSON-Schema-Test-Suite/tree/node).
+See [NODE-README.md](https://github.com/json-schema-org/JSON-Schema-Test-Suite/blob/node/NODE-README.md)
+for more information.
+
+### .NET ###
+
+* [Newtonsoft.Json.Schema](https://github.com/JamesNK/Newtonsoft.Json.Schema)
+* [Manatee.Json](https://github.com/gregsdennis/Manatee.Json)
+
+### PHP ###
+
+* [json-schema](https://github.com/justinrainbow/json-schema)
+* [json-guard](https://github.com/thephpleague/json-guard)
+
+### Python ###
+
+* [jsonschema](https://github.com/Julian/jsonschema)
+
+### Ruby ###
+
+* [json-schema](https://github.com/hoxworth/json-schema)
+
+### Rust ###
+
+* [valico](https://github.com/rustless/valico)
+
+### Swift ###
+
+* [JSONSchema](https://github.com/kylef/JSONSchema.swift)
+
+### Clojure ###
+
+* [json-schema](https://github.com/tatut/json-schema)
+
+### PostgreSQL ###
+
+* [postgres-json-schema](https://github.com/gavinwahl/postgres-json-schema)
+
+If you use it as well, please fork and send a pull request adding yourself to
+the list :).
+
+Contributing
+------------
+
+If you see something missing or incorrect, a pull request is most welcome!
+
+There are some sanity checks in place for testing the test suite. You can run
+them with `bin/jsonschema_suite check && npm test` or `tox && npm test`. They will be run automatically by
+[Travis CI](https://travis-ci.org/) as well.
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/additionalItems.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/additionalItems.json
new file mode 100644
index 00000000000..abecc578be3
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/additionalItems.json
@@ -0,0 +1,87 @@
+[
+    {
+        "description": "additionalItems as schema",
+        "schema": {
+            "items": [{}],
+            "additionalItems": {"type": "integer"}
+        },
+        "tests": [
+            {
+                "description": "additional items match schema",
+                "data": [ null, 2, 3, 4 ],
+                "valid": true
+            },
+            {
+                "description": "additional items do not match schema",
+                "data": [ null, 2, 3, "foo" ],
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "items is schema, no additionalItems",
+        "schema": {
+            "items": {},
+            "additionalItems": false
+        },
+        "tests": [
+            {
+                "description": "all items match schema",
+                "data": [ 1, 2, 3, 4, 5 ],
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "array of items with no additionalItems",
+        "schema": {
+            "items": [{}, {}, {}],
+            "additionalItems": false
+        },
+        "tests": [
+            {
+                "description": "fewer number of items present",
+                "data": [ 1, 2 ],
+                "valid": true
+            },
+            {
+                "description": "equal number of items present",
+                "data": [ 1, 2, 3 ],
+                "valid": true
+            },
+            {
+                "description": "additional items are not permitted",
+                "data": [ 1, 2, 3, 4 ],
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "additionalItems as false without items",
+        "schema": {"additionalItems": false},
+        "tests": [
+            {
+                "description":
+                    "items defaults to empty schema so everything is valid",
+                "data": [ 1, 2, 3, 4, 5 ],
+                "valid": true
+            },
+            {
+                "description": "ignores non-arrays",
+                "data": {"foo" : "bar"},
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "additionalItems are allowed by default",
+        "schema": {"items": [{"type": "integer"}]},
+        "tests": [
+            {
+                "description": "only the first item is validated",
+                "data": [1, "foo", false],
+                "valid": true
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/additionalProperties.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/additionalProperties.json
new file mode 100644
index 00000000000..90d760734e9
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/additionalProperties.json
@@ -0,0 +1,98 @@
+[
+    {
+        "description":
+            "additionalProperties being false does not allow other properties",
+        "schema": {
+            "properties": {"foo": {}, "bar": {}},
+            "patternProperties": { "^v": {} },
+            "additionalProperties": false
+        },
+        "tests": [
+            {
+                "description": "no additional properties is valid",
+                "data": {"foo": 1},
+                "valid": true
+            },
+            {
+                "description": "an additional property is invalid",
+                "data": {"foo" : 1, "bar" : 2, "quux" : "boom"},
+                "valid": false
+            },
+            {
+                "description": "ignores arrays",
+                "data": [1, 2, 3],
+                "valid": true
+            },
+            {
+                "description": "ignores strings",
+                "data": "foobarbaz",
+                "valid": true
+            },
+            {
+                "description": "ignores other non-objects",
+                "data": 12,
+                "valid": true
+            },
+            {
+                "description": "patternProperties are not additional properties",
+                "data": {"foo":1, "vroom": 2},
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description":
+            "additionalProperties allows a schema which should validate",
+        "schema": {
+            "properties": {"foo": {}, "bar": {}},
+            "additionalProperties": {"type": "boolean"}
+        },
+        "tests": [
+            {
+                "description": "no additional properties is valid",
+                "data": {"foo": 1},
+                "valid": true
+            },
+            {
+                "description": "an additional valid property is valid",
+                "data": {"foo" : 1, "bar" : 2, "quux" : true},
+                "valid": true
+            },
+            {
+                "description": "an additional invalid property is invalid",
+                "data": {"foo" : 1, "bar" : 2, "quux" : 12},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description":
+            "additionalProperties can exist by itself",
+        "schema": {
+            "additionalProperties": {"type": "boolean"}
+        },
+        "tests": [
+            {
+                "description": "an additional valid property is valid",
+                "data": {"foo" : true},
+                "valid": true
+            },
+            {
+                "description": "an additional invalid property is invalid",
+                "data": {"foo" : 1},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "additionalProperties are allowed by default",
+        "schema": {"properties": {"foo": {}, "bar": {}}},
+        "tests": [
+            {
+                "description": "additional properties are allowed",
+                "data": {"foo": 1, "bar": 2, "quux": true},
+                "valid": true
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/allOf.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/allOf.json
new file mode 100644
index 00000000000..bbb5f89e4bc
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/allOf.json
@@ -0,0 +1,112 @@
+[
+    {
+        "description": "allOf",
+        "schema": {
+            "allOf": [
+                {
+                    "properties": {
+                        "bar": {"type": "integer"}
+                    },
+                    "required": ["bar"]
+                },
+                {
+                    "properties": {
+                        "foo": {"type": "string"}
+                    },
+                    "required": ["foo"]
+                }
+            ]
+        },
+        "tests": [
+            {
+                "description": "allOf",
+                "data": {"foo": "baz", "bar": 2},
+                "valid": true
+            },
+            {
+                "description": "mismatch second",
+                "data": {"foo": "baz"},
+                "valid": false
+            },
+            {
+                "description": "mismatch first",
+                "data": {"bar": 2},
+                "valid": false
+            },
+            {
+                "description": "wrong type",
+                "data": {"foo": "baz", "bar": "quux"},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "allOf with base schema",
+        "schema": {
+            "properties": {"bar": {"type": "integer"}},
+            "required": ["bar"],
+            "allOf" : [
+                {
+                    "properties": {
+                        "foo": {"type": "string"}
+                    },
+                    "required": ["foo"]
+                },
+                {
+                    "properties": {
+                        "baz": {"type": "null"}
+                    },
+                    "required": ["baz"]
+                }
+            ]
+        },
+        "tests": [
+            {
+                "description": "valid",
+                "data": {"foo": "quux", "bar": 2, "baz": null},
+                "valid": true
+            },
+            {
+                "description": "mismatch base schema",
+                "data": {"foo": "quux", "baz": null},
+                "valid": false
+            },
+            {
+                "description": "mismatch first allOf",
+                "data": {"bar": 2, "baz": null},
+                "valid": false
+            },
+            {
+                "description": "mismatch second allOf",
+                "data": {"foo": "quux", "bar": 2},
+                "valid": false
+            },
+            {
+                "description": "mismatch both",
+                "data": {"bar": 2},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "allOf simple types",
+        "schema": {
+            "allOf": [
+                {"maximum": 30},
+                {"minimum": 20}
+            ]
+        },
+        "tests": [
+            {
+                "description": "valid",
+                "data": 25,
+                "valid": true
+            },
+            {
+                "description": "mismatch one",
+                "data": 35,
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/anyOf.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/anyOf.json
new file mode 100644
index 00000000000..a58714afd89
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/anyOf.json
@@ -0,0 +1,68 @@
+[
+    {
+        "description": "anyOf",
+        "schema": {
+            "anyOf": [
+                {
+                    "type": "integer"
+                },
+                {
+                    "minimum": 2
+                }
+            ]
+        },
+        "tests": [
+            {
+                "description": "first anyOf valid",
+                "data": 1,
+                "valid": true
+            },
+            {
+                "description": "second anyOf valid",
+                "data": 2.5,
+                "valid": true
+            },
+            {
+                "description": "both anyOf valid",
+                "data": 3,
+                "valid": true
+            },
+            {
+                "description": "neither anyOf valid",
+                "data": 1.5,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "anyOf with base schema",
+        "schema": {
+            "type": "string",
+            "anyOf" : [
+                {
+                    "maxLength": 2
+                },
+                {
+                    "minLength": 4
+                }
+            ]
+        },
+        "tests": [
+            {
+                "description": "mismatch base schema",
+                "data": 3,
+                "valid": false
+            },
+            {
+                "description": "one anyOf valid",
+                "data": "foobar",
+                "valid": true
+            },
+            {
+                "description": "both anyOf invalid",
+                "data": "foo",
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/default.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/default.json
new file mode 100644
index 00000000000..17629779fbe
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/default.json
@@ -0,0 +1,49 @@
+[
+    {
+        "description": "invalid type for default",
+        "schema": {
+            "properties": {
+                "foo": {
+                    "type": "integer",
+                    "default": []
+                }
+            }
+        },
+        "tests": [
+            {
+                "description": "valid when property is specified",
+                "data": {"foo": 13},
+                "valid": true
+            },
+            {
+                "description": "still valid when the invalid default is used",
+                "data": {},
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "invalid string value for default",
+        "schema": {
+            "properties": {
+                "bar": {
+                    "type": "string",
+                    "minLength": 4,
+                    "default": "bad"
+                }
+            }
+        },
+        "tests": [
+            {
+                "description": "valid when property is specified",
+                "data": {"bar": "good"},
+                "valid": true
+            },
+            {
+                "description": "still valid when the invalid default is used",
+                "data": {},
+                "valid": true
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/definitions.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/definitions.json
new file mode 100644
index 00000000000..cf935a32153
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/definitions.json
@@ -0,0 +1,32 @@
+[
+    {
+        "description": "valid definition",
+        "schema": {"$ref": "http://json-schema.org/draft-04/schema#"},
+        "tests": [
+            {
+                "description": "valid definition schema",
+                "data": {
+                    "definitions": {
+                        "foo": {"type": "integer"}
+                    }
+                },
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "invalid definition",
+        "schema": {"$ref": "http://json-schema.org/draft-04/schema#"},
+        "tests": [
+            {
+                "description": "invalid definition schema",
+                "data": {
+                    "definitions": {
+                        "foo": {"type": 1}
+                    }
+                },
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/dependencies.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/dependencies.json
new file mode 100644
index 00000000000..38effa1a15f
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/dependencies.json
@@ -0,0 +1,123 @@
+[
+    {
+        "description": "dependencies",
+        "schema": {
+            "dependencies": {"bar": ["foo"]}
+        },
+        "tests": [
+            {
+                "description": "neither",
+                "data": {},
+                "valid": true
+            },
+            {
+                "description": "nondependant",
+                "data": {"foo": 1},
+                "valid": true
+            },
+            {
+                "description": "with dependency",
+                "data": {"foo": 1, "bar": 2},
+                "valid": true
+            },
+            {
+                "description": "missing dependency",
+                "data": {"bar": 2},
+                "valid": false
+            },
+            {
+                "description": "ignores arrays",
+                "data": ["bar"],
+                "valid": true
+            },
+            {
+                "description": "ignores strings",
+                "data": "foobar",
+                "valid": true
+            },
+            {
+                "description": "ignores other non-objects",
+                "data": 12,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "multiple dependencies",
+        "schema": {
+            "dependencies": {"quux": ["foo", "bar"]}
+        },
+        "tests": [
+            {
+                "description": "neither",
+                "data": {},
+                "valid": true
+            },
+            {
+                "description": "nondependants",
+                "data": {"foo": 1, "bar": 2},
+                "valid": true
+            },
+            {
+                "description": "with dependencies",
+                "data": {"foo": 1, "bar": 2, "quux": 3},
+                "valid": true
+            },
+            {
+                "description": "missing dependency",
+                "data": {"foo": 1, "quux": 2},
+                "valid": false
+            },
+            {
+                "description": "missing other dependency",
+                "data": {"bar": 1, "quux": 2},
+                "valid": false
+            },
+            {
+                "description": "missing both dependencies",
+                "data": {"quux": 1},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "multiple dependencies subschema",
+        "schema": {
+            "dependencies": {
+                "bar": {
+                    "properties": {
+                        "foo": {"type": "integer"},
+                        "bar": {"type": "integer"}
+                    }
+                }
+            }
+        },
+        "tests": [
+            {
+                "description": "valid",
+                "data": {"foo": 1, "bar": 2},
+                "valid": true
+            },
+            {
+                "description": "no dependency",
+                "data": {"foo": "quux"},
+                "valid": true
+            },
+            {
+                "description": "wrong type",
+                "data": {"foo": "quux", "bar": 2},
+                "valid": false
+            },
+            {
+                "description": "wrong type other",
+                "data": {"foo": 2, "bar": "quux"},
+                "valid": false
+            },
+            {
+                "description": "wrong type both",
+                "data": {"foo": "quux", "bar": "quux"},
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/enum.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/enum.json
new file mode 100644
index 00000000000..f124436a7d9
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/enum.json
@@ -0,0 +1,72 @@
+[
+    {
+        "description": "simple enum validation",
+        "schema": {"enum": [1, 2, 3]},
+        "tests": [
+            {
+                "description": "one of the enum is valid",
+                "data": 1,
+                "valid": true
+            },
+            {
+                "description": "something else is invalid",
+                "data": 4,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "heterogeneous enum validation",
+        "schema": {"enum": [6, "foo", [], true, {"foo": 12}]},
+        "tests": [
+            {
+                "description": "one of the enum is valid",
+                "data": [],
+                "valid": true
+            },
+            {
+                "description": "something else is invalid",
+                "data": null,
+                "valid": false
+            },
+            {
+                "description": "objects are deep compared",
+                "data": {"foo": false},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "enums in properties",
+        "schema": {
+           "type":"object",
+		     "properties": {
+		        "foo": {"enum":["foo"]},
+		        "bar": {"enum":["bar"]}
+		     },
+		     "required": ["bar"]
+		  },
+        "tests": [
+            {
+                "description": "both properties are valid",
+                "data": {"foo":"foo", "bar":"bar"},
+                "valid": true
+            },
+            {
+                "description": "missing optional property is valid",
+                "data": {"bar":"bar"},
+                "valid": true
+            },
+            {
+                "description": "missing required property is invalid",
+                "data": {"foo":"foo"},
+                "valid": false
+            },
+            {
+                "description": "missing all properties is invalid",
+                "data": {},
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/items.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/items.json
new file mode 100644
index 00000000000..6a4e648f738
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/items.json
@@ -0,0 +1,78 @@
+[
+    {
+        "description": "a schema given for items",
+        "schema": {
+            "items": {"type": "integer"}
+        },
+        "tests": [
+            {
+                "description": "valid items",
+                "data": [ 1, 2, 3 ],
+                "valid": true
+            },
+            {
+                "description": "wrong type of items",
+                "data": [1, "x"],
+                "valid": false
+            },
+            {
+                "description": "ignores non-arrays",
+                "data": {"foo" : "bar"},
+                "valid": true
+            },
+            {
+                "description": "JavaScript pseudo-array is valid",
+                "data": {
+                    "0": "invalid",
+                    "length": 1
+                },
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "an array of schemas for items",
+        "schema": {
+            "items": [
+                {"type": "integer"},
+                {"type": "string"}
+            ]
+        },
+        "tests": [
+            {
+                "description": "correct types",
+                "data": [ 1, "foo" ],
+                "valid": true
+            },
+            {
+                "description": "wrong types",
+                "data": [ "foo", 1 ],
+                "valid": false
+            },
+            {
+                "description": "incomplete array of items",
+                "data": [ 1 ],
+                "valid": true
+            },
+            {
+                "description": "array with additional items",
+                "data": [ 1, "foo", true ],
+                "valid": true
+            },
+            {
+                "description": "empty array",
+                "data": [ ],
+                "valid": true
+            },
+            {
+                "description": "JavaScript pseudo-array is valid",
+                "data": {
+                    "0": "invalid",
+                    "1": "valid",
+                    "length": 2
+                },
+                "valid": true
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maxItems.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maxItems.json
new file mode 100644
index 00000000000..3b53a6b371a
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maxItems.json
@@ -0,0 +1,28 @@
+[
+    {
+        "description": "maxItems validation",
+        "schema": {"maxItems": 2},
+        "tests": [
+            {
+                "description": "shorter is valid",
+                "data": [1],
+                "valid": true
+            },
+            {
+                "description": "exact length is valid",
+                "data": [1, 2],
+                "valid": true
+            },
+            {
+                "description": "too long is invalid",
+                "data": [1, 2, 3],
+                "valid": false
+            },
+            {
+                "description": "ignores non-arrays",
+                "data": "foobar",
+                "valid": true
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maxLength.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maxLength.json
new file mode 100644
index 00000000000..811d35b253c
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maxLength.json
@@ -0,0 +1,33 @@
+[
+    {
+        "description": "maxLength validation",
+        "schema": {"maxLength": 2},
+        "tests": [
+            {
+                "description": "shorter is valid",
+                "data": "f",
+                "valid": true
+            },
+            {
+                "description": "exact length is valid",
+                "data": "fo",
+                "valid": true
+            },
+            {
+                "description": "too long is invalid",
+                "data": "foo",
+                "valid": false
+            },
+            {
+                "description": "ignores non-strings",
+                "data": 100,
+                "valid": true
+            },
+            {
+                "description": "two supplementary Unicode code points is long enough",
+                "data": "\uD83D\uDCA9\uD83D\uDCA9",
+                "valid": true
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maxProperties.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maxProperties.json
new file mode 100644
index 00000000000..513731e4c88
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maxProperties.json
@@ -0,0 +1,38 @@
+[
+    {
+        "description": "maxProperties validation",
+        "schema": {"maxProperties": 2},
+        "tests": [
+            {
+                "description": "shorter is valid",
+                "data": {"foo": 1},
+                "valid": true
+            },
+            {
+                "description": "exact length is valid",
+                "data": {"foo": 1, "bar": 2},
+                "valid": true
+            },
+            {
+                "description": "too long is invalid",
+                "data": {"foo": 1, "bar": 2, "baz": 3},
+                "valid": false
+            },
+            {
+                "description": "ignores arrays",
+                "data": [1, 2, 3],
+                "valid": true
+            },
+            {
+                "description": "ignores strings",
+                "data": "foobar",
+                "valid": true
+            },
+            {
+                "description": "ignores other non-objects",
+                "data": 12,
+                "valid": true
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maximum.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maximum.json
new file mode 100644
index 00000000000..82718fb2d5a
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/maximum.json
@@ -0,0 +1,47 @@
+[
+    {
+        "description": "maximum validation",
+        "schema": {"maximum": 3.0},
+        "tests": [
+            {
+                "description": "below the maximum is valid",
+                "data": 2.6,
+                "valid": true
+            },
+            {
+                "description": "boundary point is valid",
+                "data": 3.0,
+                "valid": true
+            },
+            {
+                "description": "above the maximum is invalid",
+                "data": 3.5,
+                "valid": false
+            },
+            {
+                "description": "ignores non-numbers",
+                "data": "x",
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "exclusiveMaximum validation",
+        "schema": {
+            "maximum": 3.0,
+            "exclusiveMaximum": true
+        },
+        "tests": [
+            {
+                "description": "below the maximum is still valid",
+                "data": 2.2,
+                "valid": true
+            },
+            {
+                "description": "boundary point is invalid",
+                "data": 3.0,
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minItems.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minItems.json
new file mode 100644
index 00000000000..ed5118815ee
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minItems.json
@@ -0,0 +1,28 @@
+[
+    {
+        "description": "minItems validation",
+        "schema": {"minItems": 1},
+        "tests": [
+            {
+                "description": "longer is valid",
+                "data": [1, 2],
+                "valid": true
+            },
+            {
+                "description": "exact length is valid",
+                "data": [1],
+                "valid": true
+            },
+            {
+                "description": "too short is invalid",
+                "data": [],
+                "valid": false
+            },
+            {
+                "description": "ignores non-arrays",
+                "data": "",
+                "valid": true
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minLength.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minLength.json
new file mode 100644
index 00000000000..3f09158deef
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minLength.json
@@ -0,0 +1,33 @@
+[
+    {
+        "description": "minLength validation",
+        "schema": {"minLength": 2},
+        "tests": [
+            {
+                "description": "longer is valid",
+                "data": "foo",
+                "valid": true
+            },
+            {
+                "description": "exact length is valid",
+                "data": "fo",
+                "valid": true
+            },
+            {
+                "description": "too short is invalid",
+                "data": "f",
+                "valid": false
+            },
+            {
+                "description": "ignores non-strings",
+                "data": 1,
+                "valid": true
+            },
+            {
+                "description": "one supplementary Unicode code point is not long enough",
+                "data": "\uD83D\uDCA9",
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minProperties.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minProperties.json
new file mode 100644
index 00000000000..49a0726e01c
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minProperties.json
@@ -0,0 +1,38 @@
+[
+    {
+        "description": "minProperties validation",
+        "schema": {"minProperties": 1},
+        "tests": [
+            {
+                "description": "longer is valid",
+                "data": {"foo": 1, "bar": 2},
+                "valid": true
+            },
+            {
+                "description": "exact length is valid",
+                "data": {"foo": 1},
+                "valid": true
+            },
+            {
+                "description": "too short is invalid",
+                "data": {},
+                "valid": false
+            },
+            {
+                "description": "ignores arrays",
+                "data": [],
+                "valid": true
+            },
+            {
+                "description": "ignores strings",
+                "data": "",
+                "valid": true
+            },
+            {
+                "description": "ignores other non-objects",
+                "data": 12,
+                "valid": true
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minimum.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minimum.json
new file mode 100644
index 00000000000..9af8ed40b02
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/minimum.json
@@ -0,0 +1,47 @@
+[
+    {
+        "description": "minimum validation",
+        "schema": {"minimum": 1.1},
+        "tests": [
+            {
+                "description": "above the minimum is valid",
+                "data": 2.6,
+                "valid": true
+            },
+            {
+                "description": "boundary point is valid",
+                "data": 1.1,
+                "valid": true
+            },
+            {
+                "description": "below the minimum is invalid",
+                "data": 0.6,
+                "valid": false
+            },
+            {
+                "description": "ignores non-numbers",
+                "data": "x",
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "exclusiveMinimum validation",
+        "schema": {
+            "minimum": 1.1,
+            "exclusiveMinimum": true
+        },
+        "tests": [
+            {
+                "description": "above the minimum is still valid",
+                "data": 1.2,
+                "valid": true
+            },
+            {
+                "description": "boundary point is invalid",
+                "data": 1.1,
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/multipleOf.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/multipleOf.json
new file mode 100644
index 00000000000..ca3b7618053
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/multipleOf.json
@@ -0,0 +1,60 @@
+[
+    {
+        "description": "by int",
+        "schema": {"multipleOf": 2},
+        "tests": [
+            {
+                "description": "int by int",
+                "data": 10,
+                "valid": true
+            },
+            {
+                "description": "int by int fail",
+                "data": 7,
+                "valid": false
+            },
+            {
+                "description": "ignores non-numbers",
+                "data": "foo",
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "by number",
+        "schema": {"multipleOf": 1.5},
+        "tests": [
+            {
+                "description": "zero is multiple of anything",
+                "data": 0,
+                "valid": true
+            },
+            {
+                "description": "4.5 is multiple of 1.5",
+                "data": 4.5,
+                "valid": true
+            },
+            {
+                "description": "35 is not multiple of 1.5",
+                "data": 35,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "by small number",
+        "schema": {"multipleOf": 0.0001},
+        "tests": [
+            {
+                "description": "0.0075 is multiple of 0.0001",
+                "data": 0.0075,
+                "valid": true
+            },
+            {
+                "description": "0.00751 is not multiple of 0.0001",
+                "data": 0.00751,
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/not.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/not.json
new file mode 100644
index 00000000000..cbb7f46bf8b
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/not.json
@@ -0,0 +1,96 @@
+[
+    {
+        "description": "not",
+        "schema": {
+            "not": {"type": "integer"}
+        },
+        "tests": [
+            {
+                "description": "allowed",
+                "data": "foo",
+                "valid": true
+            },
+            {
+                "description": "disallowed",
+                "data": 1,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "not multiple types",
+        "schema": {
+            "not": {"type": ["integer", "boolean"]}
+        },
+        "tests": [
+            {
+                "description": "valid",
+                "data": "foo",
+                "valid": true
+            },
+            {
+                "description": "mismatch",
+                "data": 1,
+                "valid": false
+            },
+            {
+                "description": "other mismatch",
+                "data": true,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "not more complex schema",
+        "schema": {
+            "not": {
+                "type": "object",
+                "properties": {
+                    "foo": {
+                        "type": "string"
+                    }
+                }
+             }
+        },
+        "tests": [
+            {
+                "description": "match",
+                "data": 1,
+                "valid": true
+            },
+            {
+                "description": "other match",
+                "data": {"foo": 1},
+                "valid": true
+            },
+            {
+                "description": "mismatch",
+                "data": {"foo": "bar"},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "forbidden property",
+        "schema": {
+            "properties": {
+                "foo": { 
+                    "not": {}
+                }
+            }
+        },
+        "tests": [
+            {
+                "description": "property present",
+                "data": {"foo": 1, "bar": 2},
+                "valid": false
+            },
+            {
+                "description": "property absent",
+                "data": {"bar": 1, "baz": 2},
+                "valid": true
+            }
+        ]
+    }
+
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/oneOf.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/oneOf.json
new file mode 100644
index 00000000000..1eaa4e47949
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/oneOf.json
@@ -0,0 +1,68 @@
+[
+    {
+        "description": "oneOf",
+        "schema": {
+            "oneOf": [
+                {
+                    "type": "integer"
+                },
+                {
+                    "minimum": 2
+                }
+            ]
+        },
+        "tests": [
+            {
+                "description": "first oneOf valid",
+                "data": 1,
+                "valid": true
+            },
+            {
+                "description": "second oneOf valid",
+                "data": 2.5,
+                "valid": true
+            },
+            {
+                "description": "both oneOf valid",
+                "data": 3,
+                "valid": false
+            },
+            {
+                "description": "neither oneOf valid",
+                "data": 1.5,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "oneOf with base schema",
+        "schema": {
+            "type": "string",
+            "oneOf" : [
+                {
+                    "minLength": 2
+                },
+                {
+                    "maxLength": 4
+                }
+            ]
+        },
+        "tests": [
+            {
+                "description": "mismatch base schema",
+                "data": 3,
+                "valid": false
+            },
+            {
+                "description": "one oneOf valid",
+                "data": "foobar",
+                "valid": true
+            },
+            {
+                "description": "both oneOf valid",
+                "data": "foo",
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/bignum.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/bignum.json
new file mode 100644
index 00000000000..ccc7c17fe8d
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/bignum.json
@@ -0,0 +1,107 @@
+[
+    {
+        "description": "integer",
+        "schema": {"type": "integer"},
+        "tests": [
+            {
+                "description": "a bignum is an integer",
+                "data": 12345678910111213141516171819202122232425262728293031,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "number",
+        "schema": {"type": "number"},
+        "tests": [
+            {
+                "description": "a bignum is a number",
+                "data": 98249283749234923498293171823948729348710298301928331,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "integer",
+        "schema": {"type": "integer"},
+        "tests": [
+            {
+                "description": "a negative bignum is an integer",
+                "data": -12345678910111213141516171819202122232425262728293031,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "number",
+        "schema": {"type": "number"},
+        "tests": [
+            {
+                "description": "a negative bignum is a number",
+                "data": -98249283749234923498293171823948729348710298301928331,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "string",
+        "schema": {"type": "string"},
+        "tests": [
+            {
+                "description": "a bignum is not a string",
+                "data": 98249283749234923498293171823948729348710298301928331,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "integer comparison",
+        "schema": {"maximum": 18446744073709551615},
+        "tests": [
+            {
+                "description": "comparison works for high numbers",
+                "data": 18446744073709551600,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "float comparison with high precision",
+        "schema": {
+            "maximum": 972783798187987123879878123.18878137,
+            "exclusiveMaximum": true
+        },
+        "tests": [
+            {
+                "description": "comparison works for high numbers",
+                "data": 972783798187987123879878123.188781371,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "integer comparison",
+        "schema": {"minimum": -18446744073709551615},
+        "tests": [
+            {
+                "description": "comparison works for very negative numbers",
+                "data": -18446744073709551600,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "float comparison with high precision on negative numbers",
+        "schema": {
+            "minimum": -972783798187987123879878123.18878137,
+            "exclusiveMinimum": true
+        },
+        "tests": [
+            {
+                "description": "comparison works for very negative numbers",
+                "data": -972783798187987123879878123.188781371,
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/ecmascript-regex.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/ecmascript-regex.json
new file mode 100644
index 00000000000..08dc9360b87
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/ecmascript-regex.json
@@ -0,0 +1,13 @@
+[
+    {
+        "description": "ECMA 262 regex non-compliance",
+        "schema": { "format": "regex" },
+        "tests": [
+            {
+                "description": "ECMA 262 has no support for \\Z anchor from .NET",
+                "data": "^\\S(|(.|\\n)*\\S)\\Z",
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/format.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/format.json
new file mode 100644
index 00000000000..80373bdf1bb
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/format.json
@@ -0,0 +1,148 @@
+[
+    {
+        "description": "validation of date-time strings",
+        "schema": {"format": "date-time"},
+        "tests": [
+            {
+                "description": "a valid date-time string",
+                "data": "1963-06-19T08:30:06.283185Z",
+                "valid": true
+            },
+            {
+                "description": "an invalid date-time string",
+                "data": "06/19/1963 08:30:06 PST",
+                "valid": false
+            },
+            {
+                "description": "only RFC3339 not all of ISO 8601 are valid",
+                "data": "2013-350T01:01:01",
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "validation of URIs",
+        "schema": {"format": "uri"},
+        "tests": [
+            {
+                "description": "a valid URI",
+                "data": "http://foo.bar/?baz=qux#quux",
+                "valid": true
+            },
+            {
+                "description": "an invalid protocol-relative URI Reference",
+                "data": "//foo.bar/?baz=qux#quux",
+                "valid": false
+            },
+            {
+                "description": "an invalid URI",
+                "data": "\\\\WINDOWS\\fileshare",
+                "valid": false
+            },
+            {
+                "description": "an invalid URI though valid URI reference",
+                "data": "abc",
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "validation of e-mail addresses",
+        "schema": {"format": "email"},
+        "tests": [
+            {
+                "description": "a valid e-mail address",
+                "data": "joe.bloggs@example.com",
+                "valid": true
+            },
+            {
+                "description": "an invalid e-mail address",
+                "data": "2962",
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "validation of IP addresses",
+        "schema": {"format": "ipv4"},
+        "tests": [
+            {
+                "description": "a valid IP address",
+                "data": "192.168.0.1",
+                "valid": true
+            },
+            {
+                "description": "an IP address with too many components",
+                "data": "127.0.0.0.1",
+                "valid": false
+            },
+            {
+                "description": "an IP address with out-of-range values",
+                "data": "256.256.256.256",
+                "valid": false
+            },
+            {
+                "description": "an IP address without 4 components",
+                "data": "127.0",
+                "valid": false
+            },
+            {
+                "description": "an IP address as an integer",
+                "data": "0x7f000001",
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "validation of IPv6 addresses",
+        "schema": {"format": "ipv6"},
+        "tests": [
+            {
+                "description": "a valid IPv6 address",
+                "data": "::1",
+                "valid": true
+            },
+            {
+                "description": "an IPv6 address with out-of-range values",
+                "data": "12345::",
+                "valid": false
+            },
+            {
+                "description": "an IPv6 address with too many components",
+                "data": "1:1:1:1:1:1:1:1:1:1:1:1:1:1:1:1",
+                "valid": false
+            },
+            {
+                "description": "an IPv6 address containing illegal characters",
+                "data": "::laptop",
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "validation of host names",
+        "schema": {"format": "hostname"},
+        "tests": [
+            {
+                "description": "a valid host name",
+                "data": "www.example.com",
+                "valid": true
+            },
+            {
+                "description": "a host name starting with an illegal character",
+                "data": "-a-host-name-that-starts-with--",
+                "valid": false
+            },
+            {
+                "description": "a host name containing illegal characters",
+                "data": "not_a_valid_host_name",
+                "valid": false
+            },
+            {
+                "description": "a host name with a component too long",
+                "data": "a-vvvvvvvvvvvvvvvveeeeeeeeeeeeeeeerrrrrrrrrrrrrrrryyyyyyyyyyyyyyyy-long-host-name-component",
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/zeroTerminatedFloats.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/zeroTerminatedFloats.json
new file mode 100644
index 00000000000..9b50ea27769
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/optional/zeroTerminatedFloats.json
@@ -0,0 +1,15 @@
+[
+    {
+        "description": "some languages do not distinguish between different types of numeric value",
+        "schema": {
+            "type": "integer"
+        },
+        "tests": [
+            {
+                "description": "a float is not an integer even without fractional part",
+                "data": 1.0,
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/pattern.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/pattern.json
new file mode 100644
index 00000000000..25e72997314
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/pattern.json
@@ -0,0 +1,34 @@
+[
+    {
+        "description": "pattern validation",
+        "schema": {"pattern": "^a*$"},
+        "tests": [
+            {
+                "description": "a matching pattern is valid",
+                "data": "aaa",
+                "valid": true
+            },
+            {
+                "description": "a non-matching pattern is invalid",
+                "data": "abc",
+                "valid": false
+            },
+            {
+                "description": "ignores non-strings",
+                "data": true,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "pattern is not anchored",
+        "schema": {"pattern": "a+"},
+        "tests": [
+            {
+                "description": "matches a substring",
+                "data": "xxaayy",
+                "valid": true
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/patternProperties.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/patternProperties.json
new file mode 100644
index 00000000000..5f741dfca60
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/patternProperties.json
@@ -0,0 +1,120 @@
+[
+    {
+        "description":
+            "patternProperties validates properties matching a regex",
+        "schema": {
+            "patternProperties": {
+                "f.*o": {"type": "integer"}
+            }
+        },
+        "tests": [
+            {
+                "description": "a single valid match is valid",
+                "data": {"foo": 1},
+                "valid": true
+            },
+            {
+                "description": "multiple valid matches is valid",
+                "data": {"foo": 1, "foooooo" : 2},
+                "valid": true
+            },
+            {
+                "description": "a single invalid match is invalid",
+                "data": {"foo": "bar", "fooooo": 2},
+                "valid": false
+            },
+            {
+                "description": "multiple invalid matches is invalid",
+                "data": {"foo": "bar", "foooooo" : "baz"},
+                "valid": false
+            },
+            {
+                "description": "ignores arrays",
+                "data": [],
+                "valid": true
+            },
+            {
+                "description": "ignores strings",
+                "data": "",
+                "valid": true
+            },
+            {
+                "description": "ignores other non-objects",
+                "data": 12,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "multiple simultaneous patternProperties are validated",
+        "schema": {
+            "patternProperties": {
+                "a*": {"type": "integer"},
+                "aaa*": {"maximum": 20}
+            }
+        },
+        "tests": [
+            {
+                "description": "a single valid match is valid",
+                "data": {"a": 21},
+                "valid": true
+            },
+            {
+                "description": "a simultaneous match is valid",
+                "data": {"aaaa": 18},
+                "valid": true
+            },
+            {
+                "description": "multiple matches is valid",
+                "data": {"a": 21, "aaaa": 18},
+                "valid": true
+            },
+            {
+                "description": "an invalid due to one is invalid",
+                "data": {"a": "bar"},
+                "valid": false
+            },
+            {
+                "description": "an invalid due to the other is invalid",
+                "data": {"aaaa": 31},
+                "valid": false
+            },
+            {
+                "description": "an invalid due to both is invalid",
+                "data": {"aaa": "foo", "aaaa": 31},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "regexes are not anchored by default and are case sensitive",
+        "schema": {
+            "patternProperties": {
+                "[0-9]{2,}": { "type": "boolean" },
+                "X_": { "type": "string" }
+            }
+        },
+        "tests": [
+            {
+                "description": "non recognized members are ignored",
+                "data": { "answer 1": "42" },
+                "valid": true
+            },
+            {
+                "description": "recognized members are accounted for",
+                "data": { "a31b": null },
+                "valid": false
+            },
+            {
+                "description": "regexes are case sensitive",
+                "data": { "a_x_3": 3 },
+                "valid": true
+            },
+            {
+                "description": "regexes are case sensitive, 2",
+                "data": { "a_X_3": 3 },
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/properties.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/properties.json
new file mode 100644
index 00000000000..a830c67e7b3
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/properties.json
@@ -0,0 +1,97 @@
+[
+    {
+        "description": "object properties validation",
+        "schema": {
+            "properties": {
+                "foo": {"type": "integer"},
+                "bar": {"type": "string"}
+            }
+        },
+        "tests": [
+            {
+                "description": "both properties present and valid is valid",
+                "data": {"foo": 1, "bar": "baz"},
+                "valid": true
+            },
+            {
+                "description": "one property invalid is invalid",
+                "data": {"foo": 1, "bar": {}},
+                "valid": false
+            },
+            {
+                "description": "both properties invalid is invalid",
+                "data": {"foo": [], "bar": {}},
+                "valid": false
+            },
+            {
+                "description": "doesn't invalidate other properties",
+                "data": {"quux": []},
+                "valid": true
+            },
+            {
+                "description": "ignores arrays",
+                "data": [],
+                "valid": true
+            },
+            {
+                "description": "ignores other non-objects",
+                "data": 12,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description":
+            "properties, patternProperties, additionalProperties interaction",
+        "schema": {
+            "properties": {
+                "foo": {"type": "array", "maxItems": 3},
+                "bar": {"type": "array"}
+            },
+            "patternProperties": {"f.o": {"minItems": 2}},
+            "additionalProperties": {"type": "integer"}
+        },
+        "tests": [
+            {
+                "description": "property validates property",
+                "data": {"foo": [1, 2]},
+                "valid": true
+            },
+            {
+                "description": "property invalidates property",
+                "data": {"foo": [1, 2, 3, 4]},
+                "valid": false
+            },
+            {
+                "description": "patternProperty invalidates property",
+                "data": {"foo": []},
+                "valid": false
+            },
+            {
+                "description": "patternProperty validates nonproperty",
+                "data": {"fxo": [1, 2]},
+                "valid": true
+            },
+            {
+                "description": "patternProperty invalidates nonproperty",
+                "data": {"fxo": []},
+                "valid": false
+            },
+            {
+                "description": "additionalProperty ignores property",
+                "data": {"bar": []},
+                "valid": true
+            },
+            {
+                "description": "additionalProperty validates others",
+                "data": {"quux": 3},
+                "valid": true
+            },
+            {
+                "description": "additionalProperty invalidates others",
+                "data": {"quux": "foo"},
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/ref.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/ref.json
new file mode 100644
index 00000000000..52cf50a982f
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/ref.json
@@ -0,0 +1,300 @@
+[
+    {
+        "description": "root pointer ref",
+        "schema": {
+            "properties": {
+                "foo": {"$ref": "#"}
+            },
+            "additionalProperties": false
+        },
+        "tests": [
+            {
+                "description": "match",
+                "data": {"foo": false},
+                "valid": true
+            },
+            {
+                "description": "recursive match",
+                "data": {"foo": {"foo": false}},
+                "valid": true
+            },
+            {
+                "description": "mismatch",
+                "data": {"bar": false},
+                "valid": false
+            },
+            {
+                "description": "recursive mismatch",
+                "data": {"foo": {"bar": false}},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "relative pointer ref to object",
+        "schema": {
+            "properties": {
+                "foo": {"type": "integer"},
+                "bar": {"$ref": "#/properties/foo"}
+            }
+        },
+        "tests": [
+            {
+                "description": "match",
+                "data": {"bar": 3},
+                "valid": true
+            },
+            {
+                "description": "mismatch",
+                "data": {"bar": true},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "relative pointer ref to array",
+        "schema": {
+            "items": [
+                {"type": "integer"},
+                {"$ref": "#/items/0"}
+            ]
+        },
+        "tests": [
+            {
+                "description": "match array",
+                "data": [1, 2],
+                "valid": true
+            },
+            {
+                "description": "mismatch array",
+                "data": [1, "foo"],
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "escaped pointer ref",
+        "schema": {
+            "tilda~field": {"type": "integer"},
+            "slash/field": {"type": "integer"},
+            "percent%field": {"type": "integer"},
+            "properties": {
+                "tilda": {"$ref": "#/tilda~0field"},
+                "slash": {"$ref": "#/slash~1field"},
+                "percent": {"$ref": "#/percent%25field"}
+            }
+        },
+        "tests": [
+            {
+                "description": "slash invalid",
+                "data": {"slash": "aoeu"},
+                "valid": false
+            },
+            {
+                "description": "tilda invalid",
+                "data": {"tilda": "aoeu"},
+                "valid": false
+            },
+            {
+                "description": "percent invalid",
+                "data": {"percent": "aoeu"},
+                "valid": false
+            },
+            {
+                "description": "slash valid",
+                "data": {"slash": 123},
+                "valid": true
+            },
+            {
+                "description": "tilda valid",
+                "data": {"tilda": 123},
+                "valid": true
+            },
+            {
+                "description": "percent valid",
+                "data": {"percent": 123},
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "nested refs",
+        "schema": {
+            "definitions": {
+                "a": {"type": "integer"},
+                "b": {"$ref": "#/definitions/a"},
+                "c": {"$ref": "#/definitions/b"}
+            },
+            "$ref": "#/definitions/c"
+        },
+        "tests": [
+            {
+                "description": "nested ref valid",
+                "data": 5,
+                "valid": true
+            },
+            {
+                "description": "nested ref invalid",
+                "data": "a",
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "ref overrides any sibling keywords",
+        "schema": {
+            "definitions": {
+                "reffed": {
+                    "type": "array"
+                }
+            },
+            "properties": {
+                "foo": {
+                    "$ref": "#/definitions/reffed",
+                    "maxItems": 2
+                }
+            }
+        },
+        "tests": [
+            {
+                "description": "ref valid",
+                "data": { "foo": [] },
+                "valid": true
+            },
+            {
+                "description": "ref valid, maxItems ignored",
+                "data": { "foo": [ 1, 2, 3] },
+                "valid": true
+            },
+            {
+                "description": "ref invalid",
+                "data": { "foo": "string" },
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "remote ref, containing refs itself",
+        "schema": {"$ref": "http://json-schema.org/draft-04/schema#"},
+        "tests": [
+            {
+                "description": "remote ref valid",
+                "data": {"minLength": 1},
+                "valid": true
+            },
+            {
+                "description": "remote ref invalid",
+                "data": {"minLength": -1},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "property named $ref that is not a reference",
+        "schema": {
+            "properties": {
+                "$ref": {"type": "string"}
+            }
+        },
+        "tests": [
+            {
+                "description": "property named $ref valid",
+                "data": {"$ref": "a"},
+                "valid": true
+            },
+            {
+                "description": "property named $ref invalid",
+                "data": {"$ref": 2},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "Recursive references between schemas",
+        "schema": {
+            "id": "http://localhost:1234/tree",
+            "description": "tree of nodes",
+            "type": "object",
+            "properties": {
+                "meta": {"type": "string"},
+                "nodes": {
+                    "type": "array",
+                    "items": {"$ref": "node"}
+                }
+            },
+            "required": ["meta", "nodes"],
+            "definitions": {
+                "node": {
+                    "id": "http://localhost:1234/node",
+                    "description": "node",
+                    "type": "object",
+                    "properties": {
+                        "value": {"type": "number"},
+                        "subtree": {"$ref": "tree"}
+                    },
+                    "required": ["value"]
+                }
+            }
+        },
+        "tests": [
+            {
+                "description": "valid tree",
+                "data": { 
+                    "meta": "root",
+                    "nodes": [
+                        {
+                            "value": 1,
+                            "subtree": {
+                                "meta": "child",
+                                "nodes": [
+                                    {"value": 1.1},
+                                    {"value": 1.2}
+                                ]
+                            }
+                        },
+                        {
+                            "value": 2,
+                            "subtree": {
+                                "meta": "child",
+                                "nodes": [
+                                    {"value": 2.1},
+                                    {"value": 2.2}
+                                ]
+                            }
+                        }
+                    ]
+                },
+                "valid": true
+            },
+            {
+                "description": "invalid tree",
+                "data": { 
+                    "meta": "root",
+                    "nodes": [
+                        {
+                            "value": 1,
+                            "subtree": {
+                                "meta": "child",
+                                "nodes": [
+                                    {"value": "string is invalid"},
+                                    {"value": 1.2}
+                                ]
+                            }
+                        },
+                        {
+                            "value": 2,
+                            "subtree": {
+                                "meta": "child",
+                                "nodes": [
+                                    {"value": 2.1},
+                                    {"value": 2.2}
+                                ]
+                            }
+                        }
+                    ]
+                },
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/refRemote.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/refRemote.json
new file mode 100644
index 00000000000..8611fadc01e
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/refRemote.json
@@ -0,0 +1,171 @@
+[
+    {
+        "description": "remote ref",
+        "schema": {"$ref": "http://localhost:1234/integer.json"},
+        "tests": [
+            {
+                "description": "remote ref valid",
+                "data": 1,
+                "valid": true
+            },
+            {
+                "description": "remote ref invalid",
+                "data": "a",
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "fragment within remote ref",
+        "schema": {"$ref": "http://localhost:1234/subSchemas.json#/integer"},
+        "tests": [
+            {
+                "description": "remote fragment valid",
+                "data": 1,
+                "valid": true
+            },
+            {
+                "description": "remote fragment invalid",
+                "data": "a",
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "ref within remote ref",
+        "schema": {
+            "$ref": "http://localhost:1234/subSchemas.json#/refToInteger"
+        },
+        "tests": [
+            {
+                "description": "ref within ref valid",
+                "data": 1,
+                "valid": true
+            },
+            {
+                "description": "ref within ref invalid",
+                "data": "a",
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "base URI change",
+        "schema": {
+            "id": "http://localhost:1234/",
+            "items": {
+                "id": "folder/",
+                "items": {"$ref": "folderInteger.json"}
+            }
+        },
+        "tests": [
+            {
+                "description": "base URI change ref valid",
+                "data": [[1]],
+                "valid": true
+            },
+            {
+                "description": "base URI change ref invalid",
+                "data": [["a"]],
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "base URI change - change folder",
+        "schema": {
+            "id": "http://localhost:1234/scope_change_defs1.json",
+            "type" : "object",
+            "properties": {
+                "list": {"$ref": "#/definitions/baz"}
+            },
+            "definitions": {
+                "baz": {
+                    "id": "folder/",
+                    "type": "array",
+                    "items": {"$ref": "folderInteger.json"}
+                }
+            }
+        },
+        "tests": [
+            {
+                "description": "number is valid",
+                "data": {"list": [1]},
+                "valid": true
+            },
+            {
+                "description": "string is invalid",
+                "data": {"list": ["a"]},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "base URI change - change folder in subschema",
+        "schema": {
+            "id": "http://localhost:1234/scope_change_defs2.json",
+            "type" : "object",
+            "properties": {
+                "list": {"$ref": "#/definitions/baz/definitions/bar"}
+            },
+            "definitions": {
+                "baz": {
+                    "id": "folder/",
+                    "definitions": {
+                        "bar": {
+                            "type": "array",
+                            "items": {"$ref": "folderInteger.json"}
+                        }
+                    }
+                }
+            }
+        },
+        "tests": [
+            {
+                "description": "number is valid",
+                "data": {"list": [1]},
+                "valid": true
+            },
+            {
+                "description": "string is invalid",
+                "data": {"list": ["a"]},
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "root ref in remote ref",
+        "schema": {
+            "id": "http://localhost:1234/object",
+            "type": "object",
+            "properties": {
+                "name": {"$ref": "name.json#/definitions/orNull"}
+            }
+        },
+        "tests": [
+            {
+                "description": "string is valid",
+                "data": {
+                    "name": "foo"
+                },
+                "valid": true
+            },
+            {
+                "description": "null is valid",
+                "data": {
+                    "name": null
+                },
+                "valid": true
+            },
+            {
+                "description": "object is invalid",
+                "data": {
+                    "name": {
+                        "name": null
+                    }
+                },
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/required.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/required.json
new file mode 100644
index 00000000000..1e2a4f0bddf
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/required.json
@@ -0,0 +1,54 @@
+[
+    {
+        "description": "required validation",
+        "schema": {
+            "properties": {
+                "foo": {},
+                "bar": {}
+            },
+            "required": ["foo"]
+        },
+        "tests": [
+            {
+                "description": "present required property is valid",
+                "data": {"foo": 1},
+                "valid": true
+            },
+            {
+                "description": "non-present required property is invalid",
+                "data": {"bar": 1},
+                "valid": false
+            },
+            {
+                "description": "ignores arrays",
+                "data": [],
+                "valid": true
+            },
+            {
+                "description": "ignores strings",
+                "data": "",
+                "valid": true
+            },
+            {
+                "description": "ignores other non-objects",
+                "data": 12,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "required default validation",
+        "schema": {
+            "properties": {
+                "foo": {}
+            }
+        },
+        "tests": [
+            {
+                "description": "not required by default",
+                "data": {},
+                "valid": true
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/type.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/type.json
new file mode 100644
index 00000000000..61293740df7
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/type.json
@@ -0,0 +1,345 @@
+[
+    {
+        "description": "integer type matches integers",
+        "schema": {"type": "integer"},
+        "tests": [
+            {
+                "description": "an integer is an integer",
+                "data": 1,
+                "valid": true
+            },
+            {
+                "description": "a float is not an integer",
+                "data": 1.1,
+                "valid": false
+            },
+            {
+                "description": "a string is not an integer",
+                "data": "foo",
+                "valid": false
+            },
+            {
+                "description": "a string is still not an integer, even if it looks like one",
+                "data": "1",
+                "valid": false
+            },
+            {
+                "description": "an object is not an integer",
+                "data": {},
+                "valid": false
+            },
+            {
+                "description": "an array is not an integer",
+                "data": [],
+                "valid": false
+            },
+            {
+                "description": "a boolean is not an integer",
+                "data": true,
+                "valid": false
+            },
+            {
+                "description": "null is not an integer",
+                "data": null,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "number type matches numbers",
+        "schema": {"type": "number"},
+        "tests": [
+            {
+                "description": "an integer is a number",
+                "data": 1,
+                "valid": true
+            },
+            {
+                "description": "a float is a number",
+                "data": 1.1,
+                "valid": true
+            },
+            {
+                "description": "a string is not a number",
+                "data": "foo",
+                "valid": false
+            },
+            {
+                "description": "a string is still not a number, even if it looks like one",
+                "data": "1",
+                "valid": false
+            },
+            {
+                "description": "an object is not a number",
+                "data": {},
+                "valid": false
+            },
+            {
+                "description": "an array is not a number",
+                "data": [],
+                "valid": false
+            },
+            {
+                "description": "a boolean is not a number",
+                "data": true,
+                "valid": false
+            },
+            {
+                "description": "null is not a number",
+                "data": null,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "string type matches strings",
+        "schema": {"type": "string"},
+        "tests": [
+            {
+                "description": "1 is not a string",
+                "data": 1,
+                "valid": false
+            },
+            {
+                "description": "a float is not a string",
+                "data": 1.1,
+                "valid": false
+            },
+            {
+                "description": "a string is a string",
+                "data": "foo",
+                "valid": true
+            },
+            {
+                "description": "a string is still a string, even if it looks like a number",
+                "data": "1",
+                "valid": true
+            },
+            {
+                "description": "an object is not a string",
+                "data": {},
+                "valid": false
+            },
+            {
+                "description": "an array is not a string",
+                "data": [],
+                "valid": false
+            },
+            {
+                "description": "a boolean is not a string",
+                "data": true,
+                "valid": false
+            },
+            {
+                "description": "null is not a string",
+                "data": null,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "object type matches objects",
+        "schema": {"type": "object"},
+        "tests": [
+            {
+                "description": "an integer is not an object",
+                "data": 1,
+                "valid": false
+            },
+            {
+                "description": "a float is not an object",
+                "data": 1.1,
+                "valid": false
+            },
+            {
+                "description": "a string is not an object",
+                "data": "foo",
+                "valid": false
+            },
+            {
+                "description": "an object is an object",
+                "data": {},
+                "valid": true
+            },
+            {
+                "description": "an array is not an object",
+                "data": [],
+                "valid": false
+            },
+            {
+                "description": "a boolean is not an object",
+                "data": true,
+                "valid": false
+            },
+            {
+                "description": "null is not an object",
+                "data": null,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "array type matches arrays",
+        "schema": {"type": "array"},
+        "tests": [
+            {
+                "description": "an integer is not an array",
+                "data": 1,
+                "valid": false
+            },
+            {
+                "description": "a float is not an array",
+                "data": 1.1,
+                "valid": false
+            },
+            {
+                "description": "a string is not an array",
+                "data": "foo",
+                "valid": false
+            },
+            {
+                "description": "an object is not an array",
+                "data": {},
+                "valid": false
+            },
+            {
+                "description": "an array is an array",
+                "data": [],
+                "valid": true
+            },
+            {
+                "description": "a boolean is not an array",
+                "data": true,
+                "valid": false
+            },
+            {
+                "description": "null is not an array",
+                "data": null,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "boolean type matches booleans",
+        "schema": {"type": "boolean"},
+        "tests": [
+            {
+                "description": "an integer is not a boolean",
+                "data": 1,
+                "valid": false
+            },
+            {
+                "description": "a float is not a boolean",
+                "data": 1.1,
+                "valid": false
+            },
+            {
+                "description": "a string is not a boolean",
+                "data": "foo",
+                "valid": false
+            },
+            {
+                "description": "an object is not a boolean",
+                "data": {},
+                "valid": false
+            },
+            {
+                "description": "an array is not a boolean",
+                "data": [],
+                "valid": false
+            },
+            {
+                "description": "a boolean is a boolean",
+                "data": true,
+                "valid": true
+            },
+            {
+                "description": "null is not a boolean",
+                "data": null,
+                "valid": false
+            }
+        ]
+    },
+    {
+        "description": "null type matches only the null object",
+        "schema": {"type": "null"},
+        "tests": [
+            {
+                "description": "an integer is not null",
+                "data": 1,
+                "valid": false
+            },
+            {
+                "description": "a float is not null",
+                "data": 1.1,
+                "valid": false
+            },
+            {
+                "description": "a string is not null",
+                "data": "foo",
+                "valid": false
+            },
+            {
+                "description": "an object is not null",
+                "data": {},
+                "valid": false
+            },
+            {
+                "description": "an array is not null",
+                "data": [],
+                "valid": false
+            },
+            {
+                "description": "a boolean is not null",
+                "data": true,
+                "valid": false
+            },
+            {
+                "description": "null is null",
+                "data": null,
+                "valid": true
+            }
+        ]
+    },
+    {
+        "description": "multiple types can be specified in an array",
+        "schema": {"type": ["integer", "string"]},
+        "tests": [
+            {
+                "description": "an integer is valid",
+                "data": 1,
+                "valid": true
+            },
+            {
+                "description": "a string is valid",
+                "data": "foo",
+                "valid": true
+            },
+            {
+                "description": "a float is invalid",
+                "data": 1.1,
+                "valid": false
+            },
+            {
+                "description": "an object is invalid",
+                "data": {},
+                "valid": false
+            },
+            {
+                "description": "an array is invalid",
+                "data": [],
+                "valid": false
+            },
+            {
+                "description": "a boolean is invalid",
+                "data": true,
+                "valid": false
+            },
+            {
+                "description": "null is invalid",
+                "data": null,
+                "valid": false
+            }
+        ]
+    }
+]
diff --git a/src/third_party/JSON-Schema-Test-Suite/tests/draft4/uniqueItems.json b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/uniqueItems.json
new file mode 100644
index 00000000000..c1f4ab99c9a
--- /dev/null
+++ b/src/third_party/JSON-Schema-Test-Suite/tests/draft4/uniqueItems.json
@@ -0,0 +1,79 @@
+[
+    {
+        "description": "uniqueItems validation",
+        "schema": {"uniqueItems": true},
+        "tests": [
+            {
+                "description": "unique array of integers is valid",
+                "data": [1, 2],
+                "valid": true
+            },
+            {
+                "description": "non-unique array of integers is invalid",
+                "data": [1, 1],
+                "valid": false
+            },
+            {
+                "description": "numbers are unique if mathematically unequal",
+                "data": [1.0, 1.00, 1],
+                "valid": false
+            },
+            {
+                "description": "unique array of objects is valid",
+                "data": [{"foo": "bar"}, {"foo": "baz"}],
+                "valid": true
+            },
+            {
+                "description": "non-unique array of objects is invalid",
+                "data": [{"foo": "bar"}, {"foo": "bar"}],
+                "valid": false
+            },
+            {
+                "description": "unique array of nested objects is valid",
+                "data": [
+                    {"foo": {"bar" : {"baz" : true}}},
+                    {"foo": {"bar" : {"baz" : false}}}
+                ],
+                "valid": true
+            },
+            {
+                "description": "non-unique array of nested objects is invalid",
+                "data": [
+                    {"foo": {"bar" : {"baz" : true}}},
+                    {"foo": {"bar" : {"baz" : true}}}
+                ],
+                "valid": false
+            },
+            {
+                "description": "unique array of arrays is valid",
+                "data": [["foo"], ["bar"]],
+                "valid": true
+            },
+            {
+                "description": "non-unique array of arrays is invalid",
+                "data": [["foo"], ["foo"]],
+                "valid": false
+            },
+            {
+                "description": "1 and true are unique",
+                "data": [1, true],
+                "valid": true
+            },
+            {
+                "description": "0 and false are unique",
+                "data": [0, false],
+                "valid": true
+            },
+            {
+                "description": "unique heterogeneous types are valid",
+                "data": [{}, [1], true, null, 1],
+                "valid": true
+            },
+            {
+                "description": "non-unique heterogeneous types are invalid",
+                "data": [{}, [1], true, null, {}, 1],
+                "valid": false
+            }
+        ]
+    }
+]