public function testAddDataTransformer() { $this->builder->addTransformer($this->getTransformerMock(), 'foo'); list($transformer) = $this->builder->getModifiers()[0]; $this->assertInstanceOf('FM\\Feeder\\Modifier\\Item\\Transformer\\DataTransformer', $transformer, '->addTransformer() wraps a Transformer in a DataTransformer '); }