public function ToolkitGdTest::testManipulations in Drupal 9
Same name and namespace in other branches
- 8 core/tests/Drupal/KernelTests/Core/Image/ToolkitGdTest.php \Drupal\KernelTests\Core\Image\ToolkitGdTest::testManipulations()
Since PHP can't visually check that our images have been manipulated properly, build a list of expected color values for each of the corners and the expected height and widths for the final images.
File
- core/
tests/ Drupal/ KernelTests/ Core/ Image/ ToolkitGdTest.php, line 115
Class
- ToolkitGdTest
- Tests that core image manipulations work properly: scale, resize, rotate, crop, scale and crop, and desaturate.
Namespace
Drupal\KernelTests\Core\ImageCode
public function testManipulations() {
// Test that the image factory is set to use the GD toolkit.
$this
->assertEquals('gd', $this->imageFactory
->getToolkitId(), 'The image factory is set to use the \'gd\' image toolkit.');
// Test the list of supported extensions.
$expected_extensions = [
'png',
'gif',
'jpeg',
'jpg',
'jpe',
'webp',
];
$supported_extensions = $this->imageFactory
->getSupportedExtensions();
$this
->assertEquals($expected_extensions, array_intersect($expected_extensions, $supported_extensions));
// Test that the supported extensions map to correct internal GD image
// types.
$expected_image_types = [
'png' => IMAGETYPE_PNG,
'gif' => IMAGETYPE_GIF,
'jpeg' => IMAGETYPE_JPEG,
'jpg' => IMAGETYPE_JPEG,
'jpe' => IMAGETYPE_JPEG,
'webp' => IMAGETYPE_WEBP,
];
$image = $this->imageFactory
->get();
foreach ($expected_image_types as $extension => $expected_image_type) {
$image_type = $image
->getToolkit()
->extensionToImageType($extension);
$this
->assertSame($expected_image_type, $image_type);
}
// Typically the corner colors will be unchanged. These colors are in the
// order of top-left, top-right, bottom-right, bottom-left.
$default_corners = [
$this->red,
$this->green,
$this->blue,
$this->transparent,
];
// A list of files that will be tested.
$files = [
'image-test.png',
'image-test.gif',
'image-test-no-transparency.gif',
'image-test.jpg',
'img-test.webp',
];
// Setup a list of tests to perform on each type.
$operations = [
'resize' => [
'function' => 'resize',
'arguments' => [
'width' => 20,
'height' => 10,
],
'width' => 20,
'height' => 10,
'corners' => $default_corners,
],
'scale_x' => [
'function' => 'scale',
'arguments' => [
'width' => 20,
],
'width' => 20,
'height' => 10,
'corners' => $default_corners,
],
'scale_y' => [
'function' => 'scale',
'arguments' => [
'height' => 10,
],
'width' => 20,
'height' => 10,
'corners' => $default_corners,
],
'upscale_x' => [
'function' => 'scale',
'arguments' => [
'width' => 80,
'upscale' => TRUE,
],
'width' => 80,
'height' => 40,
'corners' => $default_corners,
],
'upscale_y' => [
'function' => 'scale',
'arguments' => [
'height' => 40,
'upscale' => TRUE,
],
'width' => 80,
'height' => 40,
'corners' => $default_corners,
],
'crop' => [
'function' => 'crop',
'arguments' => [
'x' => 12,
'y' => 4,
'width' => 16,
'height' => 12,
],
'width' => 16,
'height' => 12,
'corners' => array_fill(0, 4, $this->white),
],
'scale_and_crop' => [
'function' => 'scale_and_crop',
'arguments' => [
'width' => 10,
'height' => 8,
],
'width' => 10,
'height' => 8,
'corners' => array_fill(0, 4, $this->black),
],
'convert_jpg' => [
'function' => 'convert',
'width' => 40,
'height' => 20,
'arguments' => [
'extension' => 'jpeg',
],
'corners' => $default_corners,
],
'convert_gif' => [
'function' => 'convert',
'width' => 40,
'height' => 20,
'arguments' => [
'extension' => 'gif',
],
'corners' => $default_corners,
],
'convert_png' => [
'function' => 'convert',
'width' => 40,
'height' => 20,
'arguments' => [
'extension' => 'png',
],
'corners' => $default_corners,
],
'convert_webp' => [
'function' => 'convert',
'width' => 40,
'height' => 20,
'arguments' => [
'extension' => 'webp',
],
'corners' => $default_corners,
],
];
// Systems using non-bundled GD2 don't have imagerotate. Test if available.
// @todo Remove the version check once
// https://www.drupal.org/project/drupal/issues/2670966 is resolved.
if (function_exists('imagerotate') && version_compare(phpversion(), '7.0.26') < 0) {
$operations += [
'rotate_5' => [
'function' => 'rotate',
// Fuchsia background.
'arguments' => [
'degrees' => 5,
'background' => '#FF00FF',
],
'width' => 41,
'height' => 23,
'corners' => array_fill(0, 4, $this->fuchsia),
],
'rotate_90' => [
'function' => 'rotate',
// Fuchsia background.
'arguments' => [
'degrees' => 90,
'background' => '#FF00FF',
],
'width' => 20,
'height' => 40,
'corners' => [
$this->transparent,
$this->red,
$this->green,
$this->blue,
],
],
'rotate_transparent_5' => [
'function' => 'rotate',
'arguments' => [
'degrees' => 5,
],
'width' => 41,
'height' => 23,
'corners' => array_fill(0, 4, $this->rotateTransparent),
],
'rotate_transparent_90' => [
'function' => 'rotate',
'arguments' => [
'degrees' => 90,
],
'width' => 20,
'height' => 40,
'corners' => [
$this->transparent,
$this->red,
$this->green,
$this->blue,
],
],
];
}
// Systems using non-bundled GD2 don't have imagefilter. Test if available.
if (function_exists('imagefilter')) {
$operations += [
'desaturate' => [
'function' => 'desaturate',
'arguments' => [],
'height' => 20,
'width' => 40,
// Grayscale corners are a bit funky. Each of the corners are a shade of
// gray. The values of these were determined simply by looking at the
// final image to see what desaturated colors end up being.
'corners' => [
array_fill(0, 3, 76) + [
3 => 0,
],
array_fill(0, 3, 149) + [
3 => 0,
],
array_fill(0, 3, 29) + [
3 => 0,
],
array_fill(0, 3, 225) + [
3 => 127,
],
],
],
];
}
// Prepare a directory for test file results.
$directory = Settings::get('file_public_path') . '/imagetest';
\Drupal::service('file_system')
->prepareDirectory($directory, FileSystemInterface::CREATE_DIRECTORY);
foreach ($files as $file) {
foreach ($operations as $op => $values) {
// Load up a fresh image.
$image = $this->imageFactory
->get('core/tests/fixtures/files/' . $file);
$toolkit = $image
->getToolkit();
if (!$image
->isValid()) {
$this
->fail(new FormattableMarkup('Could not load image %file.', [
'%file' => $file,
]));
continue 2;
}
$image_original_type = $image
->getToolkit()
->getType();
// All images should be converted to truecolor when loaded.
$image_truecolor = imageistruecolor($toolkit
->getResource());
$this
->assertTrue($image_truecolor, new FormattableMarkup('Image %file after load is a truecolor image.', [
'%file' => $file,
]));
// Store the original GD resource.
$old_res = $toolkit
->getResource();
// Perform our operation.
$image
->apply($values['function'], $values['arguments']);
// If the operation replaced the resource, check that the old one has
// been destroyed.
$new_res = $toolkit
->getResource();
if ($new_res !== $old_res) {
// @todo In https://www.drupal.org/node/3133236 convert this to
// $this->assertIsNotResource($old_res).
$this
->assertFalse(is_resource($old_res), new FormattableMarkup("'%operation' destroyed the original resource.", [
'%operation' => $values['function'],
]));
}
// To keep from flooding the test with assert values, make a general
// value for whether each group of values fail.
$correct_dimensions_real = TRUE;
$correct_dimensions_object = TRUE;
if (imagesy($toolkit
->getResource()) != $values['height'] || imagesx($toolkit
->getResource()) != $values['width']) {
$correct_dimensions_real = FALSE;
}
// Check that the image object has an accurate record of the dimensions.
if ($image
->getWidth() != $values['width'] || $image
->getHeight() != $values['height']) {
$correct_dimensions_object = FALSE;
}
$file_path = $directory . '/' . $op . image_type_to_extension($image
->getToolkit()
->getType());
$image
->save($file_path);
$this
->assertTrue($correct_dimensions_real, new FormattableMarkup('Image %file after %action action has proper dimensions.', [
'%file' => $file,
'%action' => $op,
]));
$this
->assertTrue($correct_dimensions_object, new FormattableMarkup('Image %file object after %action action is reporting the proper height and width values.', [
'%file' => $file,
'%action' => $op,
]));
// JPEG colors will always be messed up due to compression. So we skip
// these tests if the original or the result is in jpeg format.
if ($image
->getToolkit()
->getType() != IMAGETYPE_JPEG && $image_original_type != IMAGETYPE_JPEG) {
// Now check each of the corners to ensure color correctness.
foreach ($values['corners'] as $key => $corner) {
// The test gif that does not have transparency color set is a
// special case.
if ($file === 'image-test-no-transparency.gif') {
if ($op == 'desaturate') {
// For desaturating, keep the expected color from the test
// data, but set alpha channel to fully opaque.
$corner[3] = 0;
}
elseif ($corner === $this->transparent) {
// Set expected pixel to yellow where the others have
// transparent.
$corner = $this->yellow;
}
}
// Get the location of the corner.
switch ($key) {
case 0:
$x = 0;
$y = 0;
break;
case 1:
$x = $image
->getWidth() - 1;
$y = 0;
break;
case 2:
$x = $image
->getWidth() - 1;
$y = $image
->getHeight() - 1;
break;
case 3:
$x = 0;
$y = $image
->getHeight() - 1;
break;
}
$color = $this
->getPixelColor($image, $x, $y);
// We also skip the color test for transparency for gif <-> png
// conversion. The convert operation cannot handle that correctly.
if ($image
->getToolkit()
->getType() == $image_original_type || $corner != $this->transparent) {
$correct_colors = $this
->colorsAreEqual($color, $corner);
$this
->assertTrue($correct_colors, new FormattableMarkup('Image %file object after %action action has the correct color placement at corner %corner.', [
'%file' => $file,
'%action' => $op,
'%corner' => $key,
]));
}
}
}
// Check that saved image reloads without raising PHP errors.
$image_reloaded = $this->imageFactory
->get($file_path);
$resource = $image_reloaded
->getToolkit()
->getResource();
}
}
// Test creation of image from scratch, and saving to storage.
foreach ([
IMAGETYPE_PNG,
IMAGETYPE_GIF,
IMAGETYPE_JPEG,
IMAGETYPE_WEBP,
] as $type) {
$image = $this->imageFactory
->get();
$image
->createNew(50, 20, image_type_to_extension($type, FALSE), '#ffff00');
$file = 'from_null' . image_type_to_extension($type);
$file_path = $directory . '/' . $file;
$this
->assertEquals(50, $image
->getWidth(), new FormattableMarkup('Image file %file has the correct width.', [
'%file' => $file,
]));
$this
->assertEquals(20, $image
->getHeight(), new FormattableMarkup('Image file %file has the correct height.', [
'%file' => $file,
]));
$this
->assertEquals(image_type_to_mime_type($type), $image
->getMimeType(), new FormattableMarkup('Image file %file has the correct MIME type.', [
'%file' => $file,
]));
$this
->assertTrue($image
->save($file_path), new FormattableMarkup('Image %file created anew from a null image was saved.', [
'%file' => $file,
]));
// Reload saved image.
$image_reloaded = $this->imageFactory
->get($file_path);
if (!$image_reloaded
->isValid()) {
$this
->fail(new FormattableMarkup('Could not load image %file.', [
'%file' => $file,
]));
continue;
}
$this
->assertEquals(50, $image_reloaded
->getWidth(), new FormattableMarkup('Image file %file has the correct width.', [
'%file' => $file,
]));
$this
->assertEquals(20, $image_reloaded
->getHeight(), new FormattableMarkup('Image file %file has the correct height.', [
'%file' => $file,
]));
$this
->assertEquals(image_type_to_mime_type($type), $image_reloaded
->getMimeType(), new FormattableMarkup('Image file %file has the correct MIME type.', [
'%file' => $file,
]));
if ($image_reloaded
->getToolkit()
->getType() == IMAGETYPE_GIF) {
$this
->assertEquals('#ffff00', $image_reloaded
->getToolkit()
->getTransparentColor(), new FormattableMarkup('Image file %file has the correct transparent color channel set.', [
'%file' => $file,
]));
}
else {
$this
->assertNull($image_reloaded
->getToolkit()
->getTransparentColor(), new FormattableMarkup('Image file %file has no color channel set.', [
'%file' => $file,
]));
}
}
// Test failures of the 'create_new' operation.
$image = $this->imageFactory
->get();
$image
->createNew(-50, 20);
$this
->assertFalse($image
->isValid(), 'CreateNew with negative width fails.');
$image
->createNew(50, 20, 'foo');
$this
->assertFalse($image
->isValid(), 'CreateNew with invalid extension fails.');
$image
->createNew(50, 20, 'gif', '#foo');
$this
->assertFalse($image
->isValid(), 'CreateNew with invalid color hex string fails.');
$image
->createNew(50, 20, 'gif', '#ff0000');
$this
->assertTrue($image
->isValid(), 'CreateNew with valid arguments validates the Image.');
}