Alcaeus\MongoDbAdapter\Tests\Mongo\MongoCollectionTest::testBatchInsertWithEmptyKey PHP Method

    public function testBatchInsertWithEmptyKey()
    {
        $this->setExpectedException('MongoException', 'zero-length keys are not allowed, did you use $ with double quotes?');
        $documents = [['' => 'foo']];
        $this->getCollection()->batchInsert($documents);
    }