25 lines
613 B
JavaScript
25 lines
613 B
JavaScript
// Usage of $$ROOT variable can lead to Document cache reallocation and possible memory corruption.
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// Test is checking that this is not the case.
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const bigStr = 'X'.repeat(1024);
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const doc = {
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_id: 0,
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d: true,
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sub: {d: false, str: bigStr},
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str: bigStr,
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};
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db.test.drop();
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assert.commandWorked(db.test.insertOne(doc));
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const pipeline = [{
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$redact: {
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$cond: {
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if: "$d",
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then: "$$DESCEND",
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else: {$cond: {if: {$objectToArray: "$$ROOT"}, then: "$$KEEP", else: "$$PRUNE"}}
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}
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}
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}];
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assert.eq([doc], db.test.aggregate(pipeline).toArray());
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