17 lines
578 B
JavaScript
17 lines
578 B
JavaScript
// SERVER-4638 - this tests explicit undefined values
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// This case is marked as a dup of SERVER-4674
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const t = db[jsTestName()];
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t.drop();
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assert.commandWorked(t.insert({_id: 0, x: 0, undef: undefined}));
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// Make sure having an undefined doesn't break pipelines not using the field
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let res = t.aggregate({$project: {x: 1}}).toArray();
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assert.eq(res[0].x, 0);
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// Make sure having an undefined doesn't break pipelines that do use the field
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res = t.aggregate({$project: {undef: 1}}).toArray();
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assert.eq(res[0].undef, undefined);
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assert.eq(typeof (res[0].undef), "undefined");
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