77 lines
3.2 KiB
JavaScript
77 lines
3.2 KiB
JavaScript
/**
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* Tests the DataConsistencyChecker.getDiff() function can be used to compare the contents between
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* different collections.
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*
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* @tags: [
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* requires_replication,
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* ]
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*/
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import {ReplSetTest} from "jstests/libs/replsettest.js";
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const rst = new ReplSetTest({nodes: 2});
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rst.startSet();
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rst.initiate();
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const dbName = "diff_different_collections_test";
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const collName1 = "coll_one";
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const collName2 = "coll_two";
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const primaryDB = rst.getPrimary().getDB(dbName);
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const matchingDocs = Array.from({length: 100}, (_, i) => ({_id: i, num: i * 2}));
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assert.commandWorked(primaryDB[collName1].insert(matchingDocs));
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assert.commandWorked(primaryDB[collName2].insert(matchingDocs));
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let diff = DataConsistencyChecker.getDiff(primaryDB[collName1].find().sort({_id: 1}),
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primaryDB[collName2].find().sort({_id: 1}));
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assert.eq(diff, {docsWithDifferentContents: [], docsMissingOnFirst: [], docsMissingOnSecond: []});
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const expectedMissingOnSecond = [{_id: 30.2, num: -1}, {_id: 70.4, num: -2}];
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const expectedMissingOnFirst = [{_id: 10, num: 20}, {_id: 50, num: 100}];
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assert.commandWorked(primaryDB[collName1].insert(expectedMissingOnSecond));
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assert.commandWorked(primaryDB[collName1].remove(
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{_id: {$in: expectedMissingOnFirst.map(doc => doc._id)}}, {justOne: false}));
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assert.commandWorked(
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primaryDB[collName1].update({_id: {$in: [40, 90]}}, {$set: {extra: "yes"}}, {multi: true}));
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// Type fidelity is expected to be preserved by replication so intentionally test comparisons of
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// distinct but equivalent BSON types.
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assert.commandWorked(primaryDB[collName1].update({_id: 2}, {$set: {num: NumberLong(4)}}));
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diff = DataConsistencyChecker.getDiff(primaryDB[collName1].find().sort({_id: 1}),
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primaryDB[collName2].find().sort({_id: 1}));
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assert.eq(diff,
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{
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docsWithDifferentContents: [
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{first: {_id: 2, num: NumberLong(4)}, second: {_id: 2, num: 4}},
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{first: {_id: 40, num: 80, extra: "yes"}, second: {_id: 40, num: 80}},
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{first: {_id: 90, num: 180, extra: "yes"}, second: {_id: 90, num: 180}},
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],
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docsMissingOnFirst: expectedMissingOnFirst,
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docsMissingOnSecond: expectedMissingOnSecond
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},
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"actual mismatch between collections differed");
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// It is also possible to compare the contents of different collections across different servers.
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rst.awaitReplication();
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const secondaryDB = rst.getSecondary().getDB(dbName);
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diff = DataConsistencyChecker.getDiff(primaryDB[collName1].find().sort({_id: 1}),
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secondaryDB[collName2].find().sort({_id: 1}));
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assert.eq(diff,
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{
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docsWithDifferentContents: [
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{first: {_id: 2, num: NumberLong(4)}, second: {_id: 2, num: 4}},
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{first: {_id: 40, num: 80, extra: "yes"}, second: {_id: 40, num: 80}},
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{first: {_id: 90, num: 180, extra: "yes"}, second: {_id: 90, num: 180}},
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],
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docsMissingOnFirst: expectedMissingOnFirst,
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docsMissingOnSecond: expectedMissingOnSecond
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},
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"actual mismatch between servers differed");
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rst.stopSet(); |