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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 $fuchsia = array(255, 0, 255, 0); // Used as background colors.
+ protected $transparent = array(0, 0, 0, 127);
+ protected $white = array(255, 255, 255, 0);
+
+ 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.
+ 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.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.
+ if (function_exists('imagerotate')) {
+ $operations += array(
+ 'rotate_5' => array(
+ 'function' => 'rotate',
+ 'arguments' => array(5, 0xFF00FF), // Fuchsia background.
+ 'width' => 42,
+ 'height' => 24,
+ 'corners' => array_fill(0, 4, $this->fuchsia),
+ ),
+ 'rotate_90' => array(
+ 'function' => 'rotate',
+ 'arguments' => array(90, 0xFF00FF), // Fuchsia background.
+ 'width' => 20,
+ 'height' => 40,
+ 'corners' => array($this->fuchsia, $this->red, $this->green, $this->blue),
+ ),
+ 'rotate_transparent_5' => array(
+ 'function' => 'rotate',
+ 'arguments' => array(5),
+ 'width' => 42,
+ 'height' => 24,
+ 'corners' => array_fill(0, 4, $this->transparent),
+ ),
+ 'rotate_transparent_90' => array(
+ 'function' => 'rotate',
+ 'arguments' => array(90),
+ 'width' => 20,
+ 'height' => 40,
+ 'corners' => array($this->transparent, $this->red, $this->green, $this->blue),
+ ),
+ );
+ }
+
+ // Systems using non-bundled GD2 don't have imagefilter. Test if available.
+ if (function_exists('imagefilter')) {
+ $operations += array(
+ 'desaturate' => array(
+ 'function' => 'desaturate',
+ 'arguments' => array(),
+ 'height' => 20,
+ 'width' => 40,
+ // Grayscale corners are a bit funky. Each of the corners are a shade of
+ // gray. The values of these were determined simply by looking at the
+ // final image to see what desaturated colors end up being.
+ 'corners' => array(
+ array_fill(0, 3, 76) + array(3 => 0),
+ array_fill(0, 3, 149) + array(3 => 0),
+ array_fill(0, 3, 29) + array(3 => 0),
+ array_fill(0, 3, 0) + array(3 => 127)
+ ),
+ ),
+ );
+ }
+
+ foreach ($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' => $file)));
+ continue 2;
+ }
+
+ // Transparent GIFs and the imagefilter function don't work together.
+ // There is a todo in image.gd.inc to correct this.
+ if ($image->info['extension'] == 'gif') {
+ if ($op == 'desaturate') {
+ $values['corners'][3] = $this->white;
+ }
+ }
+
+ // 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 => $corner) {
+ // Get the location of the corner.
+ switch ($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);
+ image_save($image, $directory . '/' . $op . '.' . $image->info['extension']);
+
+ $this->assertTrue($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)));
+ }
+ }
+ }
+
+ }
+}
+
+/**
+ * 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.');
+ }
+}
+