1 files changed, 101 insertions, 0 deletions
diff --git a/tests/draft2019-09/optional/format/hostname.json b/tests/draft2019-09/optional/format/hostname.json
new file mode 100644
index 0000000..eac8cac
--- /dev/null
+++ b/tests/draft2019-09/optional/format/hostname.json
@@ -0,0 +1,101 @@
+[
+    {
+        "description": "validation of host names",
+        "schema": {
+            "$schema": "https://json-schema.org/draft/2019-09/schema",
+            "format": "hostname"
+        },
+        "tests": [
+            {
+                "description": "all string formats ignore integers",
+                "data": 12,
+                "valid": true
+            },
+            {
+                "description": "all string formats ignore floats",
+                "data": 13.7,
+                "valid": true
+            },
+            {
+                "description": "all string formats ignore objects",
+                "data": {},
+                "valid": true
+            },
+            {
+                "description": "all string formats ignore arrays",
+                "data": [],
+                "valid": true
+            },
+            {
+                "description": "all string formats ignore booleans",
+                "data": false,
+                "valid": true
+            },
+            {
+                "description": "all string formats ignore nulls",
+                "data": null,
+                "valid": true
+            },
+            {
+                "description": "a valid host name",
+                "data": "www.example.com",
+                "valid": true
+            },
+            {
+                "description": "a valid punycoded IDN hostname",
+                "data": "xn--4gbwdl.xn--wgbh1c",
+                "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
+            },
+            {
+                "description": "starts with hyphen",
+                "data": "-hostname",
+                "valid": false
+            },
+            {
+                "description": "ends with hyphen",
+                "data": "hostname-",
+                "valid": false
+            },
+            {
+                "description": "starts with underscore",
+                "data": "_hostname",
+                "valid": false
+            },
+            {
+                "description": "ends with underscore",
+                "data": "hostname_",
+                "valid": false
+            },
+            {
+                "description": "contains underscore",
+                "data": "host_name",
+                "valid": false
+            },
+            {
+                "description": "maximum label length",
+                "data": "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijk.com",
+                "valid": true
+            },
+            {
+                "description": "exceeds maximum label length",
+                "data": "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkl.com",
+                "valid": false
+            }
+        ]
+    }
+]