Elgg\Mocks\Database::getConnection PHP Method

    public function getConnection($type)
    {
        $connection = $this->test->getMockBuilder(Connection::class)->setMethods(['query', 'executeQuery', 'lastInsertId'])->disableOriginalConstructor()->getMock();
        $connection->expects($this->test->any())->method('query')->will($this->test->returnCallback([$this, 'executeDatabaseQuery']));
        $connection->expects($this->test->any())->method('executeQuery')->will($this->test->returnCallback([$this, 'executeDatabaseQuery']));
        $connection->expects($this->test->any())->method('lastInsertId')->will($this->test->returnCallback(function () {
            return $this->last_insert_id;
        }));
        return $connection;
    }