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// SERVER-10689 introduced the $switch expression. In this file, we test the error cases of the
// expression.
load("jstests/aggregation/extras/utils.js"); // For assertErrorCode.
(function() {
"use strict";
var coll = db.switch;
coll.drop();
var pipeline = {"$project": {"output": {"$switch": "not an object"}}};
assertErrorCode(coll, pipeline, 40060, "$switch requires an object as an argument.");
pipeline = {"$project": {"output": {"$switch": {"branches": "not an array"}}}};
assertErrorCode(coll, pipeline, 40061, "$switch requires 'branches' to be an array.");
pipeline = {"$project": {"output": {"$switch": {"branches": ["not an object"]}}}};
assertErrorCode(coll, pipeline, 40062, "$switch requires each branch to be an object.");
pipeline = {"$project": {"output": {"$switch": {"branches": [{}]}}}};
assertErrorCode(coll, pipeline, 40064, "$switch requires each branch have a 'case'.");
pipeline = {
"$project": {
"output": {
"$switch": {
"branches": [{
"case": 1,
}]
}
}
}
};
assertErrorCode(coll, pipeline, 40065, "$switch requires each branch have a 'then'.");
pipeline = {
"$project":
{"output": {"$switch": {"branches": [{"case": true, "then": false, "badKey": 1}]}}}
};
assertErrorCode(coll, pipeline, 40063, "$switch found a branch with an unknown argument");
pipeline = {"$project": {"output": {"$switch": {"notAnArgument": 1}}}};
assertErrorCode(coll, pipeline, 40067, "$switch found an unknown argument");
pipeline = {"$project": {"output": {"$switch": {"branches": []}}}};
assertErrorCode(coll, pipeline, 40068, "$switch requires at least one branch");
pipeline = {"$project": {"output": {"$switch": {}}}};
assertErrorCode(coll, pipeline, 40068, "$switch requires at least one branch");
coll.insert({x: 1});
pipeline = {
"$project":
{"output": {"$switch": {"branches": [{"case": {"$eq": ["$x", 0]}, "then": 1}]}}}
};
assertErrorCode(coll, pipeline, 40066, "$switch has no default and an input matched no case");
}());
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