Doctrine\MongoDB\Tests\Query\BuilderTest::testSelectElemMatchWithExpr PHP Method

    public function testSelectElemMatchWithExpr()
    {
        $qb = $this->getTestQueryBuilder();
        $qb->selectElemMatch('addresses', $qb->expr()->field('state')->equals('ny'));
        $expected = ['addresses' => ['$elemMatch' => ['state' => 'ny']]];
        $this->assertEquals($expected, $qb->debug('select'));
    }