mirror of https://github.com/mongodb/mongo
87 lines
2.5 KiB
JavaScript
87 lines
2.5 KiB
JavaScript
// @tags: [
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// # Cannot implicitly shard accessed collections because of not being able to create unique
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// # index using hashed shard key pattern.
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// cannot_create_unique_index_when_using_hashed_shard_key,
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// requires_fastcount,
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//
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// # Uses index building in background
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// requires_background_index,
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// ]
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(function() {
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"use strict";
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var res;
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let t = db.jstests_uniqueness;
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t.drop();
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// test uniqueness of _id
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res = t.save({_id: 3});
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assert.commandWorked(res);
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// this should yield an error
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res = t.insert({_id: 3});
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assert.writeError(res);
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assert.eq(1, t.count());
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res = t.insert({_id: 4, x: 99});
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assert.commandWorked(res);
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// this should yield an error
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res = t.update({_id: 4}, {_id: 3, x: 99});
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assert.writeError(res);
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assert(t.findOne({_id: 4}));
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// Check for an error message when we index and there are dups
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db.jstests_uniqueness2.drop();
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db.jstests_uniqueness2.insert({a: 3});
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db.jstests_uniqueness2.insert({a: 3});
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assert.eq(2, db.jstests_uniqueness2.count());
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res = db.jstests_uniqueness2.ensureIndex({a: 1}, true);
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assert.commandFailed(res);
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assert(res.errmsg.match(/E11000/));
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// Check for an error message when we index in the background and there are dups
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db.jstests_uniqueness2.drop();
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db.jstests_uniqueness2.insert({a: 3});
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db.jstests_uniqueness2.insert({a: 3});
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assert.eq(2, db.jstests_uniqueness2.count());
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res = db.jstests_uniqueness2.ensureIndex({a: 1}, {unique: true, background: true});
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assert.commandFailed(res);
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assert(res.errmsg.match(/E11000/));
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// Verify that duplicate key errors follow a fixed format, including field information.
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const coll = db.checkDupErrorMessage;
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const key = {
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_id: 1
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};
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const expectedMessage =
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'E11000 duplicate key error collection: ' + coll + ' index: _id_ dup key: { _id: 1.0 }';
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coll.drop();
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assert.commandWorked(coll.insert(key));
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res = coll.insert(key);
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assert.commandFailedWithCode(res, ErrorCodes.DuplicateKey);
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assert.eq(res.nInserted, 0, tojson(res));
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const writeError = res.getWriteError();
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assert.eq(writeError.errmsg,
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expectedMessage,
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"The duplicate key error message must exactly match." + tojson(res));
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/* Check that if we update and remove _id, it gets added back by the DB */
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/* - test when object grows */
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t.drop();
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t.save({_id: 'Z'});
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t.update({}, {k: 2});
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assert.eq('Z', t.findOne()._id, "uniqueness.js problem with adding back _id");
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/* - test when doesn't grow */
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t.drop();
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t.save({_id: 'Z', k: 3});
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t.update({}, {k: 2});
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assert.eq('Z', t.findOne()._id, "uniqueness.js problem with adding back _id (2)");
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})();
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