29 lines
950 B
JavaScript
29 lines
950 B
JavaScript
/**
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* Tests that explain reports the skip stage statistics correctly.
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*
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* @tags: [
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* assumes_unsharded_collection,
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* assumes_against_mongod_not_mongos,
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* ]
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*/
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import {getPlanStage, getWinningPlan} from "jstests/libs/analyze_plan.js";
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const coll = db.explain_skip;
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coll.drop();
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assert.commandWorked(coll.insert({a: 1, b: 1}));
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assert.commandWorked(coll.insert({a: 1, b: 2}));
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assert.commandWorked(coll.insert({a: 1, b: 3}));
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assert.commandWorked(coll.insert({a: 2, b: 1}));
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assert.commandWorked(coll.insert({a: 2, b: 2}));
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assert.commandWorked(coll.insert({a: 2, b: 3}));
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assert.commandWorked(coll.createIndex({a: 1}));
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assert.commandWorked(coll.createIndex({b: 1}));
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const explain = coll.find({a: 1, b: 1}).sort({_id: 1}).skip(5).explain();
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const winningPlan = getWinningPlan(explain.queryPlanner);
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const skipStage = getPlanStage(winningPlan, "SKIP");
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assert.neq(null, skipStage, explain);
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assert.eq(5, skipStage.skipAmount, explain);
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