49 lines
1.9 KiB
JavaScript
49 lines
1.9 KiB
JavaScript
/**
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* Tests that an index properly reports multikeyness and multikey paths metadata in the presence of
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* successful and unsuccessful inserts.
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*/
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(function() {
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"use strict";
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// For making assertions about explain output.
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load("jstests/libs/analyze_plan.js");
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const coll = db.getCollection("index_multikey");
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coll.drop();
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function getIndexScanExplainOutput() {
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const explain = coll.find().hint({a: 1, b: 1}).explain();
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assert.commandWorked(explain);
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return getPlanStage(explain.queryPlanner.winningPlan, "IXSCAN");
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}
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assert.commandWorked(coll.createIndex({a: 1, b: 1}));
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assert.commandWorked(coll.createIndex({"a.0.0": 1}));
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let ixscan = getIndexScanExplainOutput();
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assert.eq(ixscan.isMultiKey,
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false,
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"empty index should not be marked multikey; plan: " + tojson(ixscan));
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assert.eq(ixscan.multiKeyPaths,
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{a: [], b: []},
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"empty index should have no multiKeyPaths; plan: " + tojson(ixscan));
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// After a failed insert, the index should not be marked as multikey.
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assert.commandFailedWithCode(coll.insert({a: [[1], {0: 1}]}), 16746);
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ixscan = getIndexScanExplainOutput();
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assert.eq(ixscan.isMultiKey,
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false,
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"index should not be marked multikey after failed insert; plan: " + tojson(ixscan));
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assert.eq(ixscan.multiKeyPaths,
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{a: [], b: []},
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"index should have empty multiKeyPaths after failed insert; plan: " + tojson(ixscan));
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assert.commandWorked(coll.insert({a: [1, 2, 3]}));
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ixscan = getIndexScanExplainOutput();
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assert.eq(ixscan.isMultiKey,
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true,
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"index should have been marked as multikey after insert; plan: " + tojson(ixscan));
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assert.eq(ixscan.multiKeyPaths,
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{a: ["a"], b: []},
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"index has wrong multikey paths after insert; plan: " + ixscan);
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})();
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