Mongolid\DataMapper\DataMapperTest::testPrepareProjectionShouldThrownAnException PHP Method

    public function testPrepareProjectionShouldThrownAnException()
    {
        // Arrange
        $connPool = m::mock(Pool::class);
        $mapper = new DataMapper($connPool);
        $data = ['valid' => true, 'invalid-key' => 'invalid-value'];
        // Act
        $this->callProtected($mapper, 'prepareProjection', [$data]);
    }