/**
  * @covers ::addImageStyleMapping
  * @covers ::getImageStyleMapping
  */
 public function testGetImageStyleMapping()
 {
     $entity = new ResponsiveImageStyle(array(''));
     $entity->addImageStyleMapping('test_breakpoint', '1x', array('image_mapping_type' => 'image_style', 'image_mapping' => 'large'));
     $expected = array('breakpoint_id' => 'test_breakpoint', 'multiplier' => '1x', 'image_mapping_type' => 'image_style', 'image_mapping' => 'large');
     $this->assertEquals($expected, $entity->getImageStyleMapping('test_breakpoint', '1x'));
     $this->assertNull($entity->getImageStyleMapping('test_unknown_breakpoint', '1x'));
 }