50 lines
1.1 KiB
JavaScript
50 lines
1.1 KiB
JavaScript
/**
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* Tests that $projects with a large number of projected fields behave as expected.
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*/
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(function() {
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const coll = db.large_project;
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coll.drop();
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const numProjects = 10000;
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const doc = {
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_id: 15
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};
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for (let i = 0; i < numProjects; i++) {
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doc['a' + i] = i;
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}
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assert.commandWorked(coll.insert(doc));
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{
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// Inclusion projection.
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const project = {};
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const expectedDoc = {_id: 15};
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for (let i = 0; i < numProjects; i++) {
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if (i % 2 === 1) {
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project['a' + i] = 1;
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expectedDoc['a' + i] = i;
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}
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}
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const result = coll.aggregate({$project: project}).toArray();
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assert.eq(result.length, 1);
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assert.docEq(result[0], expectedDoc);
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}
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{
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// Exclusion projection.
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const project = {};
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const expectedDoc = {_id: 15};
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for (let i = 0; i < numProjects; i++) {
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if (i % 2 === 0) {
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project['a' + i] = 0;
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} else {
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expectedDoc['a' + i] = i;
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}
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}
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const result = coll.aggregate({$project: project}).toArray();
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assert.eq(result.length, 1);
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assert.docEq(result[0], expectedDoc);
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}
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})();
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