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fix(createCollection): Db.createCollection should pass readConcern to new collection #2026

Merged
merged 13 commits into from
Jun 21, 2019
4 changes: 3 additions & 1 deletion lib/db.js
Original file line number Diff line number Diff line change
Expand Up @@ -505,7 +505,9 @@ Db.prototype.createCollection = deprecateOptions(
if (typeof options === 'function') (callback = options), (options = {});
options = options || {};
options.promiseLibrary = options.promiseLibrary || this.s.promiseLibrary;

options.readConcern = options.readConcern
? new ReadConcern(options.readConcern.level)
: this.readConcern;
const createCollectionOperation = new CreateCollectionOperation(this, name, options);

return executeOperation(this.s.topology, createCollectionOperation, callback);
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2 changes: 1 addition & 1 deletion lib/operations/create_collection.js
Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@ const illegalCommandFields = [
'raw',
'readPreference',
'session',
'writeConcern'
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'readConcern'
];

class CreateCollectionOperation extends CommandOperation {
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28 changes: 27 additions & 1 deletion test/functional/readconcern_tests.js
Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ describe('ReadConcern', function() {
return setupDatabase(configuration);
});

it('Should set local readConcern on db level', {
it('Should set local readConcern on db level when using collection method', {
metadata: { requires: { topology: 'replicaset', mongodb: '>= 3.2' } },

test: function(done) {
Expand Down Expand Up @@ -56,6 +56,32 @@ describe('ReadConcern', function() {
}
});

it('Should set local readConcern on db level when using createCollection method', {
metadata: { requires: { topology: 'replicaset', mongodb: '>= 3.2' } },

test: function(done) {
// Get a new instance
let configuration = this.configuration;
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const client = configuration.newClient(
{ w: 1 },
{ poolSize: 1, readConcern: { level: 'local' }, monitorCommands: true }
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);

client.connect(function(err, client) {
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expect(err).to.not.exist;

let db = client.db(configuration.db);
test.deepEqual({ level: 'local' }, db.s.readConcern);
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// Get a collection using createCollection
let collection = db.createCollection('readConcernCollection');
// Validate readConcern
expect(test).to.deep.equal({ level: 'local' }, collection.s.readConcern);
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done();
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});
}
});

it('Should set majority readConcern on db level', {
metadata: { requires: { topology: 'replicaset', mongodb: '>= 3.2' } },

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