85 lines
2.8 KiB
JavaScript
85 lines
2.8 KiB
JavaScript
/**
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* Tests the behavior of legacy $out.
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*
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* This test assumes that collections are not implicitly sharded, since $out is prohibited if the
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* output collection is sharded.
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*/
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import {dropWithoutImplicitRecreate} from "jstests/aggregation/extras/merge_helpers.js";
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import {assertErrorCode} from "jstests/aggregation/extras/utils.js";
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import {FixtureHelpers} from "jstests/libs/fixture_helpers.js";
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const coll = db.source;
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const targetCollName = "target";
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coll.drop();
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dropWithoutImplicitRecreate(targetCollName);
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const pipeline = [{$out: targetCollName}];
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//
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// Test $out with a non-existent output collection.
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//
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assert.commandWorked(coll.insert({_id: 0}));
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coll.aggregate(pipeline);
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const targetColl = db.target;
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assert.eq(1, targetColl.find().itcount());
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// Test $out with a non-existent database. Sharded pass throughs will implicitly shard accessed
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// collections so we skip this test here cause you can't out to a sharded collecti
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const destDB = db.getSiblingDB("outDifferentDB");
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destDB.dropDatabase();
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if (!FixtureHelpers.isMongos(db)) {
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coll.aggregate({$out: {db: destDB.getName(), coll: destDB.outDifferentColl.getName()}});
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assert.eq(1, destDB.outDifferentColl.find().itcount());
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}
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//
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// Test $out with an existing output collection.
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//
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coll.aggregate(pipeline);
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assert.eq(1, targetColl.find().itcount());
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//
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// Test that $out will preserve the indexes and options of the output collection.
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//
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dropWithoutImplicitRecreate(targetCollName);
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assert.commandWorked(db.createCollection(targetColl.getName(), {validator: {a: {$gt: 0}}}));
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assert.commandWorked(targetColl.createIndex({a: 1}));
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coll.drop();
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assert.commandWorked(coll.insert({a: 1}));
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coll.aggregate(pipeline);
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assert.eq(1, targetColl.find().itcount());
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assert.eq(2, targetColl.getIndexes().length);
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const listColl = db.runCommand({listCollections: 1, filter: {name: targetColl.getName()}});
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assert.commandWorked(listColl);
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assert.eq({a: {$gt: 0}}, listColl.cursor.firstBatch[0].options["validator"]);
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//
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// Test that $out fails if it violates a unique index constraint.
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//
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coll.drop();
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assert.commandWorked(
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coll.insert([
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{_id: 0, a: 0},
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{_id: 1, a: 0},
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]),
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);
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dropWithoutImplicitRecreate(targetCollName);
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assert.commandWorked(targetColl.createIndex({a: 1}, {unique: true}));
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assertErrorCode(coll, pipeline, ErrorCodes.DuplicateKey);
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// Rerun a similar test, except populate the target collection with a document that conflics
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// with one out of the pipeline. In this case, there is no unique key violation since the target
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// collection will be dropped before renaming the source collection.
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coll.drop();
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assert.commandWorked(coll.insert({_id: 0, a: 0}));
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targetColl.remove({});
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assert.commandWorked(targetColl.insert({_id: 1, a: 0}));
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coll.aggregate(pipeline);
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assert.eq(1, targetColl.find().itcount());
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assert.eq(2, targetColl.getIndexes().length);
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