mirror of https://github.com/mongodb/mongo
86 lines
2.9 KiB
JavaScript
86 lines
2.9 KiB
JavaScript
// SERVER-10689 introduced the $switch expression. In this file, we test the error cases of the
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// expression.
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load("jstests/aggregation/extras/utils.js"); // For assertErrorCode.
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load("jstests/libs/sbe_assert_error_override.js"); // Override error-code-checking APIs.
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(function() {
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"use strict";
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var coll = db.switch;
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coll.drop();
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var pipeline = {"$project": {"output": {"$switch": "not an object"}}};
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assertErrorCode(coll, pipeline, 40060, "$switch requires an object as an argument.");
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pipeline = {
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"$project": {"output": {"$switch": {"branches": "not an array"}}}
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};
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assertErrorCode(coll, pipeline, 40061, "$switch requires 'branches' to be an array.");
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pipeline = {
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"$project": {"output": {"$switch": {"branches": ["not an object"]}}}
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};
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assertErrorCode(coll, pipeline, 40062, "$switch requires each branch to be an object.");
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pipeline = {
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"$project": {"output": {"$switch": {"branches": [{}]}}}
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};
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assertErrorCode(coll, pipeline, 40064, "$switch requires each branch have a 'case'.");
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pipeline = {
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"$project": {
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"output": {
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"$switch": {
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"branches": [{
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"case": 1,
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}]
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}
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}
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}
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};
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assertErrorCode(coll, pipeline, 40065, "$switch requires each branch have a 'then'.");
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pipeline = {
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"$project": {"output": {"$switch": {"branches": [{"case": true, "then": false, "badKey": 1}]}}}
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};
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assertErrorCode(coll, pipeline, 40063, "$switch found a branch with an unknown argument");
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pipeline = {
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"$project": {"output": {"$switch": {"notAnArgument": 1}}}
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};
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assertErrorCode(coll, pipeline, 40067, "$switch found an unknown argument");
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pipeline = {
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"$project": {"output": {"$switch": {"branches": []}}}
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};
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assertErrorCode(coll, pipeline, 40068, "$switch requires at least one branch");
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pipeline = {
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"$project": {"output": {"$switch": {}}}
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};
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assertErrorCode(coll, pipeline, 40068, "$switch requires at least one branch");
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assert.commandWorked(coll.insert({x: 1}));
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pipeline = {
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"$project": {"output": {"$switch": {"branches": [{"case": {"$eq": ["$x", 0]}, "then": 1}]}}}
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};
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assertErrorCode(coll, pipeline, 40066, "$switch has no default and an input matched no case");
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// This query was designed to reproduce SERVER-70190. The first branch of the $switch can be
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// optimized away and the $ifNull can be optimized to 2. If the field "x" exists in the input
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// document and is truthy, then the expression should return 2. Otherwise it should throw because no
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// case statement matched and there is no "default" expression.
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pipeline = [{
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$sortByCount: {
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$switch: {
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branches:
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[{case: {$literal: false}, then: 1}, {case: "$x", then: {$ifNull: [2, "$y"]}}]
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}
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}
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}];
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assert.eq([{"_id": 2, "count": 1}], coll.aggregate(pipeline).toArray());
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assert.commandWorked(coll.remove({x: 1}));
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assert.commandWorked(coll.insert({z: 1}));
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assertErrorCode(coll, pipeline, 40066, "$switch has no default and an input matched no case");
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}());
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