64 lines
2.5 KiB
JavaScript
64 lines
2.5 KiB
JavaScript
// Simple covered index query test
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// Include helpers for analyzing explain output.
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load("jstests/libs/analyze_plan.js");
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var coll = db.getCollection("covered_simple_id");
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coll.drop();
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for (i = 0; i < 10; i++) {
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coll.insert({_id: i});
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}
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coll.insert({_id: "string"});
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coll.insert({_id: {bar: 1}});
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coll.insert({_id: null});
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// Test equality with int value
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var plan = coll.find({_id: 1}, {_id: 1}).hint({_id: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.id.1 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.id.1 - docs examined should be 0 for covered query");
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// Test equality with string value
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var plan = coll.find({_id: "string"}, {_id: 1}).hint({_id: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.id.2 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.id.2 - docs examined should be 0 for covered query");
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// Test equality with int value on a dotted field
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var plan = coll.find({_id: {bar: 1}}, {_id: 1}).hint({_id: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.id.3 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.id.3 - docs examined should be 0 for covered query");
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// Test no query
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var plan = coll.find({}, {_id: 1}).hint({_id: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.id.4 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.id.4 - docs examined should be 0 for covered query");
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// Test range query
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var plan = coll.find({_id: {$gt: 2, $lt: 6}}, {_id: 1}).hint({_id: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.id.5 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.id.5 - docs examined should be 0 for covered query");
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// Test in query
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var plan = coll.find({_id: {$in: [5, 8]}}, {_id: 1}).hint({_id: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.id.6 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.id.6 - docs examined should be 0 for covered query");
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print('all tests pass');
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