public function CropEffectTest::testCropEffect in Crop API 8.2

Same name and namespace in other branches

1. 8 tests/src/Kernel/CropEffectTest.php \Drupal\Tests\crop\Kernel\CropEffectTest::testCropEffect()

Tests manual crop image effect.

File

tests/src/Kernel/CropEffectTest.php, line 22

Class

CropEffectTest

Tests the crop image effect.

Namespace

Drupal\Tests\crop\Kernel

Code

public function testCropEffect() {

  // Create image to be cropped.
  $file = $this
    ->getTestFile();
  $file
    ->save();

  // Create crop.
  $values = [
    'type' => $this->cropType
      ->id(),
    'entity_id' => $file
      ->id(),
    'entity_type' => 'file',
    'uri' => $file
      ->getFileUri(),
    'x' => '190',
    'y' => '120',
    'width' => '50',
    'height' => '50',
  ];

  /** @var \Drupal\crop\CropInterface $crop */
  $crop = $this->container
    ->get('entity_type.manager')
    ->getStorage('crop')
    ->create($values);
  $crop
    ->save();
  $derivative_uri = $this->testStyle
    ->buildUri($file
    ->getFileUri());
  $this->testStyle
    ->createDerivative($file
    ->getFileUri(), $derivative_uri);
  $this
    ->assertTrue(file_exists($derivative_uri), 'Image derivative file exists on the filesystem.');

  // Test if cropped version looks like expected. Basically loop pixels,
  // in derivative image and check if they look the same as pixels,
  // in corresponding region on original image.
  $original_image = imagecreatefrompng($file
    ->getFileUri());
  $derivative_image = imagecreatefrompng($derivative_uri);
  $orig_start = $crop
    ->anchor();
  $matches = TRUE;
  for ($x = 0; $x < $values['width']; $x++) {
    for ($y = 0; $y < $values['height']; $y++) {
      if (imagecolorat($derivative_image, $x, $y) != imagecolorat($original_image, $orig_start['x'] + $x, $orig_start['y'] + $y)) {
        $matches = FALSE;
        break;
      }
    }
  }
  $this
    ->assertTrue($matches, 'Cropped image looks the same as region on original.');
}