/**
  * @covers ::hasAttachedEntity()
  * @covers ::getAttachableEntityManager()
  */
 public function testHasAttachedEntityCallsManager()
 {
     $key = 'someKey';
     $return = new \stdClass();
     $attachableEntityManager = $this->injectManager($this->attachableEntityTrait);
     $attachableEntityManager->expects($this->once())->method('getAttachedEntity')->with($this->equalTo($key))->willReturn($return);
     $this->assertTrue($this->attachableEntityTrait->hasAttachedEntity($key));
 }