26 lines
823 B
JavaScript
26 lines
823 B
JavaScript
// @tags: [does_not_support_stepdowns]
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/**
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* Tests that the explain output for $match reflects any optimizations.
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*/
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(function() {
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"use strict";
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load("jstests/libs/analyze_plan.js");
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const coll = db.match_explain;
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coll.drop();
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assert.writeOK(coll.insert({a: 1, b: 1}));
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assert.writeOK(coll.insert({a: 2, b: 3}));
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assert.writeOK(coll.insert({a: 1, b: 2}));
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assert.writeOK(coll.insert({a: 1, b: 4}));
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// Explain output should reflect optimizations.
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// $and should not be in the explain output because it is optimized out.
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let explain = coll.explain().aggregate(
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[{$sort: {b: -1}}, {$addFields: {c: {$mod: ["$a", 4]}}}, {$match: {$and: [{c: 1}]}}]);
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assert.commandWorked(explain);
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assert.eq(getAggPlanStage(explain, "$match"), {$match: {c: {$eq: 1}}});
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}());
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