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Mauricio Dinarte 2024-12-04 10:11:27 -06:00
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<?php
/**
* @file
* Tests for core image handling API.
*/
/**
* Base class for image manipulation testing.
*/
class ImageToolkitTestCase extends DrupalWebTestCase {
protected $toolkit;
protected $file;
protected $image;
function setUp() {
$modules = func_get_args();
if (isset($modules[0]) && is_array($modules[0])) {
$modules = $modules[0];
}
$modules[] = 'image_test';
parent::setUp($modules);
// Use the image_test.module's test toolkit.
$this->toolkit = 'test';
// Pick a file for testing.
$file = current($this->drupalGetTestFiles('image'));
$this->file = $file->uri;
// Setup a dummy image to work with, this replicate image_load() so we
// can avoid calling it.
$this->image = new stdClass();
$this->image->source = $this->file;
$this->image->info = image_get_info($this->file);
$this->image->toolkit = $this->toolkit;
// Clear out any hook calls.
image_test_reset();
}
/**
* Assert that all of the specified image toolkit operations were called
* exactly once once, other values result in failure.
*
* @param $expected
* Array with string containing with the operation name, e.g. 'load',
* 'save', 'crop', etc.
*/
function assertToolkitOperationsCalled(array $expected) {
// Determine which operations were called.
$actual = array_keys(array_filter(image_test_get_all_calls()));
// Determine if there were any expected that were not called.
$uncalled = array_diff($expected, $actual);
if (count($uncalled)) {
$this->assertTrue(FALSE, format_string('Expected operations %expected to be called but %uncalled was not called.', array('%expected' => implode(', ', $expected), '%uncalled' => implode(', ', $uncalled))));
}
else {
$this->assertTrue(TRUE, format_string('All the expected operations were called: %expected', array('%expected' => implode(', ', $expected))));
}
// Determine if there were any unexpected calls.
$unexpected = array_diff($actual, $expected);
if (count($unexpected)) {
$this->assertTrue(FALSE, format_string('Unexpected operations were called: %unexpected.', array('%unexpected' => implode(', ', $unexpected))));
}
else {
$this->assertTrue(TRUE, 'No unexpected operations were called.');
}
}
}
/**
* Test that the functions in image.inc correctly pass data to the toolkit.
*/
class ImageToolkitUnitTest extends ImageToolkitTestCase {
public static function getInfo() {
return array(
'name' => 'Image toolkit tests',
'description' => 'Check image toolkit functions.',
'group' => 'Image',
);
}
/**
* Check that hook_image_toolkits() is called and only available toolkits are
* returned.
*/
function testGetAvailableToolkits() {
$toolkits = image_get_available_toolkits();
$this->assertTrue(isset($toolkits['test']), 'The working toolkit was returned.');
$this->assertFalse(isset($toolkits['broken']), 'The toolkit marked unavailable was not returned');
$this->assertToolkitOperationsCalled(array());
}
/**
* Test the image_load() function.
*/
function testLoad() {
$image = image_load($this->file, $this->toolkit);
$this->assertTrue(is_object($image), 'Returned an object.');
$this->assertEqual($this->toolkit, $image->toolkit, 'Image had toolkit set.');
$this->assertToolkitOperationsCalled(array('load', 'get_info'));
}
/**
* Test the image_save() function.
*/
function testSave() {
$this->assertFalse(image_save($this->image), 'Function returned the expected value.');
$this->assertToolkitOperationsCalled(array('save'));
}
/**
* Test the image_resize() function.
*/
function testResize() {
$this->assertTrue(image_resize($this->image, 1, 2), 'Function returned the expected value.');
$this->assertToolkitOperationsCalled(array('resize'));
// Check the parameters.
$calls = image_test_get_all_calls();
$this->assertEqual($calls['resize'][0][1], 1, 'Width was passed correctly');
$this->assertEqual($calls['resize'][0][2], 2, 'Height was passed correctly');
}
/**
* Test the image_scale() function.
*/
function testScale() {
// TODO: need to test upscaling
$this->assertTrue(image_scale($this->image, 10, 10), 'Function returned the expected value.');
$this->assertToolkitOperationsCalled(array('resize'));
// Check the parameters.
$calls = image_test_get_all_calls();
$this->assertEqual($calls['resize'][0][1], 10, 'Width was passed correctly');
$this->assertEqual($calls['resize'][0][2], 5, 'Height was based off aspect ratio and passed correctly');
}
/**
* Test the image_scale_and_crop() function.
*/
function testScaleAndCrop() {
$this->assertTrue(image_scale_and_crop($this->image, 5, 10), 'Function returned the expected value.');
$this->assertToolkitOperationsCalled(array('resize', 'crop'));
// Check the parameters.
$calls = image_test_get_all_calls();
$this->assertEqual($calls['crop'][0][1], 7.5, 'X was computed and passed correctly');
$this->assertEqual($calls['crop'][0][2], 0, 'Y was computed and passed correctly');
$this->assertEqual($calls['crop'][0][3], 5, 'Width was computed and passed correctly');
$this->assertEqual($calls['crop'][0][4], 10, 'Height was computed and passed correctly');
}
/**
* Test the image_rotate() function.
*/
function testRotate() {
$this->assertTrue(image_rotate($this->image, 90, 1), 'Function returned the expected value.');
$this->assertToolkitOperationsCalled(array('rotate'));
// Check the parameters.
$calls = image_test_get_all_calls();
$this->assertEqual($calls['rotate'][0][1], 90, 'Degrees were passed correctly');
$this->assertEqual($calls['rotate'][0][2], 1, 'Background color was passed correctly');
}
/**
* Test the image_crop() function.
*/
function testCrop() {
$this->assertTrue(image_crop($this->image, 1, 2, 3, 4), 'Function returned the expected value.');
$this->assertToolkitOperationsCalled(array('crop'));
// Check the parameters.
$calls = image_test_get_all_calls();
$this->assertEqual($calls['crop'][0][1], 1, 'X was passed correctly');
$this->assertEqual($calls['crop'][0][2], 2, 'Y was passed correctly');
$this->assertEqual($calls['crop'][0][3], 3, 'Width was passed correctly');
$this->assertEqual($calls['crop'][0][4], 4, 'Height was passed correctly');
}
/**
* Test the image_desaturate() function.
*/
function testDesaturate() {
$this->assertTrue(image_desaturate($this->image), 'Function returned the expected value.');
$this->assertToolkitOperationsCalled(array('desaturate'));
// Check the parameters.
$calls = image_test_get_all_calls();
$this->assertEqual(count($calls['desaturate'][0]), 1, 'Only the image was passed.');
}
}
/**
* Test the core GD image manipulation functions.
*/
class ImageToolkitGdTestCase extends DrupalWebTestCase {
// Colors that are used in testing.
protected $black = array(0, 0, 0, 0);
protected $red = array(255, 0, 0, 0);
protected $green = array(0, 255, 0, 0);
protected $blue = array(0, 0, 255, 0);
protected $yellow = array(255, 255, 0, 0);
protected $white = array(255, 255, 255, 0);
protected $transparent = array(0, 0, 0, 127);
// Used as rotate background colors.
protected $fuchsia = array(255, 0, 255, 0);
protected $rotate_transparent = array(255, 255, 255, 127);
protected $width = 40;
protected $height = 20;
public static function getInfo() {
return array(
'name' => 'Image GD manipulation tests',
'description' => 'Check that core image manipulations work properly: scale, resize, rotate, crop, scale and crop, and desaturate.',
'group' => 'Image',
);
}
/**
* Function to compare two colors by RGBa.
*/
function colorsAreEqual($color_a, $color_b) {
// Fully transparent pixels are equal, regardless of RGB.
if ($color_a[3] == 127 && $color_b[3] == 127) {
return TRUE;
}
foreach ($color_a as $key => $value) {
if ($color_b[$key] != $value) {
return FALSE;
}
}
return TRUE;
}
/**
* Function for finding a pixel's RGBa values.
*/
function getPixelColor($image, $x, $y) {
$color_index = imagecolorat($image->resource, $x, $y);
$transparent_index = imagecolortransparent($image->resource);
if ($color_index == $transparent_index) {
return array(0, 0, 0, 127);
}
return array_values(imagecolorsforindex($image->resource, $color_index));
}
/**
* 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.
*/
function testManipulations() {
// If GD isn't available don't bother testing this.
module_load_include('inc', 'system', 'image.gd');
if (!function_exists('image_gd_check_settings') || !image_gd_check_settings()) {
$this->pass(t('Image manipulations for the GD toolkit were skipped because the GD toolkit is not available.'));
return;
}
// Typically the corner colors will be unchanged. These colors are in the
// order of top-left, top-right, bottom-right, bottom-left.
$default_corners = array($this->red, $this->green, $this->blue, $this->transparent);
// A list of files that will be tested.
$files = array(
'image-test.png',
'image-test.gif',
'image-test-no-transparency.gif',
'image-test.jpg',
);
// Setup a list of tests to perform on each type.
$operations = array(
'resize' => array(
'function' => 'resize',
'arguments' => array(20, 10),
'width' => 20,
'height' => 10,
'corners' => $default_corners,
),
'scale_x' => array(
'function' => 'scale',
'arguments' => array(20, NULL),
'width' => 20,
'height' => 10,
'corners' => $default_corners,
),
'scale_y' => array(
'function' => 'scale',
'arguments' => array(NULL, 10),
'width' => 20,
'height' => 10,
'corners' => $default_corners,
),
'upscale_x' => array(
'function' => 'scale',
'arguments' => array(80, NULL, TRUE),
'width' => 80,
'height' => 40,
'corners' => $default_corners,
),
'upscale_y' => array(
'function' => 'scale',
'arguments' => array(NULL, 40, TRUE),
'width' => 80,
'height' => 40,
'corners' => $default_corners,
),
'crop' => array(
'function' => 'crop',
'arguments' => array(12, 4, 16, 12),
'width' => 16,
'height' => 12,
'corners' => array_fill(0, 4, $this->white),
),
'scale_and_crop' => array(
'function' => 'scale_and_crop',
'arguments' => array(10, 8),
'width' => 10,
'height' => 8,
'corners' => array_fill(0, 4, $this->black),
),
);
// Systems using non-bundled GD2 don't have imagerotate. Test if available.
// @todo Remove the version check once https://www.drupal.org/node/2918570
// is resolved.
if (function_exists('imagerotate') && (version_compare(PHP_VERSION, '7.0.26', '<') || (version_compare(PHP_VERSION, '7.1', '>=') && version_compare(PHP_VERSION, '7.1.12', '<')))) {
$operations += array(
'rotate_90' => array(
'function' => 'rotate',
'arguments' => array(90, 0xFF00FF), // Fuchsia background.
'width' => 20,
'height' => 40,
'corners' => array($this->fuchsia, $this->red, $this->green, $this->blue),
),
'rotate_transparent_90' => array(
'function' => 'rotate',
'arguments' => array(90),
'width' => 20,
'height' => 40,
'corners' => array($this->transparent, $this->red, $this->green, $this->blue),
),
);
// As of PHP version 5.5, GD uses a different algorithm to rotate images
// than version 5.4 and below, resulting in different dimensions.
// See https://bugs.php.net/bug.php?id=65148.
// For the 40x20 test images, the dimensions resulting from rotation will
// be 1 pixel smaller in both width and height in PHP 5.5 and above.
// @todo: The PHP bug was fixed in PHP 7.0.26 and 7.1.12. Change the code
// below to reflect that in https://www.drupal.org/node/2918570.
if (version_compare(PHP_VERSION, '5.5', '>=')) {
$operations += array(
'rotate_5' => array(
'function' => 'rotate',
'arguments' => array(5, 0xFF00FF), // Fuchsia background.
'width' => 41,
'height' => 23,
'corners' => array_fill(0, 4, $this->fuchsia),
),
'rotate_transparent_5' => array(
'function' => 'rotate',
'arguments' => array(5),
'width' => 41,
'height' => 23,
'corners' => array_fill(0, 4, $this->rotate_transparent),
),
);
}
else {
$operations += array(
'rotate_5' => array(
'function' => 'rotate',
'arguments' => array(5, 0xFF00FF), // Fuchsia background.
'width' => 42,
'height' => 24,
'corners' => array_fill(0, 4, $this->fuchsia),
),
'rotate_transparent_5' => array(
'function' => 'rotate',
'arguments' => array(5),
'width' => 42,
'height' => 24,
'corners' => array_fill(0, 4, $this->rotate_transparent),
),
);
}
}
// Systems using non-bundled GD2 don't have imagefilter. Test if available.
if (function_exists('imagefilter')) {
$operations += array(
'desaturate' => array(
'function' => 'desaturate',
'arguments' => array(),
'height' => 20,
'width' => 40,
// Grayscale corners are a bit funky. Each of the corners are a shade of
// gray. The values of these were determined simply by looking at the
// final image to see what desaturated colors end up being.
'corners' => array(
array_fill(0, 3, 76) + array(3 => 0),
array_fill(0, 3, 149) + array(3 => 0),
array_fill(0, 3, 29) + array(3 => 0),
array_fill(0, 3, 225) + array(3 => 127)
),
),
);
}
foreach ($files as $file) {
foreach ($operations as $op => $values) {
// Load up a fresh image.
$image = image_load(drupal_get_path('module', 'simpletest') . '/files/' . $file, 'gd');
if (!$image) {
$this->fail(t('Could not load image %file.', array('%file' => $file)));
continue 2;
}
// All images should be converted to truecolor when loaded.
$image_truecolor = imageistruecolor($image->resource);
$this->assertTrue($image_truecolor, format_string('Image %file after load is a truecolor image.', array('%file' => $file)));
if ($image->info['extension'] == 'gif') {
if ($op == 'desaturate') {
// Transparent GIFs and the imagefilter function don't work together.
$values['corners'][3][3] = 0;
}
}
// Perform our operation.
$function = 'image_' . $values['function'];
$arguments = array();
$arguments[] = &$image;
$arguments = array_merge($arguments, $values['arguments']);
call_user_func_array($function, $arguments);
// 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;
$correct_colors = TRUE;
// Check the real dimensions of the image first.
if (imagesy($image->resource) != $values['height'] || imagesx($image->resource) != $values['width']) {
$correct_dimensions_real = FALSE;
}
// Check that the image object has an accurate record of the dimensions.
if ($image->info['width'] != $values['width'] || $image->info['height'] != $values['height']) {
$correct_dimensions_object = FALSE;
}
// Now check each of the corners to ensure color correctness.
foreach ($values['corners'] as $key => $corner) {
// The test gif that does not have transparency has yellow where the
// others have transparent.
if ($file === 'image-test-no-transparency.gif' && $corner === $this->transparent) {
$corner = $this->yellow;
}
// Get the location of the corner.
switch ($key) {
case 0:
$x = 0;
$y = 0;
break;
case 1:
$x = $values['width'] - 1;
$y = 0;
break;
case 2:
$x = $values['width'] - 1;
$y = $values['height'] - 1;
break;
case 3:
$x = 0;
$y = $values['height'] - 1;
break;
}
$color = $this->getPixelColor($image, $x, $y);
$correct_colors = $this->colorsAreEqual($color, $corner);
}
$directory = file_default_scheme() . '://imagetests';
file_prepare_directory($directory, FILE_CREATE_DIRECTORY);
$file_path = $directory . '/' . $op . '.' . $image->info['extension'];
image_save($image, $file_path);
$this->assertTrue($correct_dimensions_real, format_string('Image %file after %action action has proper dimensions.', array('%file' => $file, '%action' => $op)));
$this->assertTrue($correct_dimensions_object, format_string('Image %file object after %action action is reporting the proper height and width values.', array('%file' => $file, '%action' => $op)));
// JPEG colors will always be messed up due to compression.
if ($image->info['extension'] != 'jpg') {
$this->assertTrue($correct_colors, format_string('Image %file object after %action action has the correct color placement.', array('%file' => $file, '%action' => $op)));
}
}
// Check that saved image reloads without raising PHP errors.
$image_reloaded = image_load($file_path);
}
}
/**
* Tests loading an image whose transparent color index is out of range.
*/
function testTransparentColorOutOfRange() {
// This image was generated by taking an initial image with a palette size
// of 6 colors, and setting the transparent color index to 6 (one higher
// than the largest allowed index), as follows:
// @code
// $image = imagecreatefromgif('modules/simpletest/files/image-test.gif');
// imagecolortransparent($image, 6);
// imagegif($image, 'modules/simpletest/files/image-test-transparent-out-of-range.gif');
// @endcode
// This allows us to test that an image with an out-of-range color index
// can be loaded correctly.
$file = 'image-test-transparent-out-of-range.gif';
$image = image_load(drupal_get_path('module', 'simpletest') . '/files/' . $file);
if (!$image) {
$this->fail(format_string('Could not load image %file.', array('%file' => $file)));
}
else {
// All images should be converted to truecolor when loaded.
$image_truecolor = imageistruecolor($image->resource);
$this->assertTrue($image_truecolor, format_string('Image %file after load is a truecolor image.', array('%file' => $file)));
}
}
}
/**
* Tests the file move function for managed files.
*/
class ImageFileMoveTest extends ImageToolkitTestCase {
public static function getInfo() {
return array(
'name' => 'Image moving',
'description' => 'Tests the file move function for managed files.',
'group' => 'Image',
);
}
/**
* Tests moving a randomly generated image.
*/
function testNormal() {
// Pick a file for testing.
$file = current($this->drupalGetTestFiles('image'));
// Create derivative image.
$style = image_style_load(key(image_styles()));
$derivative_uri = image_style_path($style['name'], $file->uri);
image_style_create_derivative($style, $file->uri, $derivative_uri);
// Check if derivative image exists.
$this->assertTrue(file_exists($derivative_uri), 'Make sure derivative image is generated successfully.');
// Clone the object so we don't have to worry about the function changing
// our reference copy.
$desired_filepath = 'public://' . $this->randomName();
$result = file_move(clone $file, $desired_filepath, FILE_EXISTS_ERROR);
// Check if image has been moved.
$this->assertTrue(file_exists($result->uri), 'Make sure image is moved successfully.');
// Check if derivative image has been flushed.
$this->assertFalse(file_exists($derivative_uri), 'Make sure derivative image has been flushed.');
}
}