456 lines
16 KiB
Plaintext
456 lines
16 KiB
Plaintext
<?php
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// $Id$
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/**
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* @file
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* Unit tests for the Drupal Form API.
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*/
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/**
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* Base class for image manipulation testing.
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*/
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class ImageToolkitTestCase extends DrupalWebTestCase {
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protected $toolkit;
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protected $file;
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protected $image;
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public static function getInfo() {
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return array(
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'name' => t('Image toolkit tests'),
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'description' => t('Check image tookit functions.'),
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'group' => t('Image API'),
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);
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}
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function setUp() {
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parent::setUp('image_test');
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// Use the image_test.module's test toolkit.
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$this->toolkit = 'test';
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// Pick a file for testing.
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$this->file = $this->originalFileDirectory . '/simpletest/image-test.png';
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// Setup a dummy image to work with, this replicate image_load() so we
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// can avoid calling it.
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$this->image = new stdClass();
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$this->image->source = $this->file;
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$this->image->info = image_get_info($this->file);
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$this->image->toolkit = $this->toolkit;
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// Clear out any hook calls.
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image_test_reset();
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}
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/**
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* Assert that all of the specified image toolkit operations were called
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* exactly once once, other values result in failure.
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*
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* @param $expected
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* Array with string containing with the operation name, e.g. 'load',
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* 'save', 'crop', etc.
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*/
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function assertToolkitOperationsCalled(array $expected) {
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// Determine which operations were called.
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$actual = array_keys(array_filter(image_test_get_all_calls()));
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// Determine if there were any expected that were not called.
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$uncalled = array_diff($expected, $actual);
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if (count($uncalled)) {
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$this->assertTrue(FALSE, t('Expected operations %expected to be called but %uncalled was not called.', array('%expected' => implode(', ', $expected), '%uncalled' => implode(', ', $uncalled))));
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}
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else {
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$this->assertTrue(TRUE, t('All the expected operations were called: %expected', array('%expected' => implode(', ', $expected))));
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}
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// Determine if there were any unexpected calls.
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$unexpected = array_diff($actual, $expected);
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if (count($unexpected)) {
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$this->assertTrue(FALSE, t('Unexpected operations were called: %unexpected.', array('%unexpected' => implode(', ', $unexpected))));
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}
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else {
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$this->assertTrue(TRUE, t('No unexpected operations were called.'));
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}
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}
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/**
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* Check that hook_image_toolkits() is called and only available toolkits are
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* returned.
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*/
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function testGetAvailableToolkits() {
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$toolkits = image_get_available_toolkits();
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$this->assertTrue(isset($toolkits['test']), t('The working toolkit was returned.'));
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$this->assertFalse(isset($toolkits['broken']), t('The toolkit marked unavailable was not returned'));
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$this->assertToolkitOperationsCalled(array());
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}
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/**
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* Test the image_load() function.
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*/
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function testLoad() {
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$image = image_load($this->file, $this->toolkit);
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$this->assertTrue(is_object($image), t('Returned an object.'));
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$this->assertEqual($this->toolkit, $image->toolkit, t('Image had toolkit set.'));
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$this->assertToolkitOperationsCalled(array('load'));
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}
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/**
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* Test the image_save() function.
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*/
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function testSave() {
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$this->assertFalse(image_save($this->image), t('Function returned the expected value.'));
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$this->assertToolkitOperationsCalled(array('save'));
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}
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/**
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* Test the image_resize() function.
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*/
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function testResize() {
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$this->assertTrue(image_resize($this->image, 1, 2), t('Function returned the expected value.'));
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$this->assertToolkitOperationsCalled(array('resize'));
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// Check the parameters.
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$calls = image_test_get_all_calls();
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$this->assertEqual($calls['resize'][0][1], 1, t('Width was passed correctly'));
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$this->assertEqual($calls['resize'][0][2], 2, t('Height was passed correctly'));
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}
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/**
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* Test the image_scale() function.
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*/
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function testScale() {
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// TODO: need to test upscaling
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$this->assertTrue(image_scale($this->image, 10, 10), t('Function returned the expected value.'));
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$this->assertToolkitOperationsCalled(array('resize'));
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// Check the parameters.
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$calls = image_test_get_all_calls();
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$this->assertEqual($calls['resize'][0][1], 10, t('Width was passed correctly'));
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$this->assertEqual($calls['resize'][0][2], 5, t('Height was based off aspect ratio and passed correctly'));
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}
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/**
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* Test the image_scale_and_crop() function.
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*/
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function testScaleAndCrop() {
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$this->assertTrue(image_scale_and_crop($this->image, 5, 10), t('Function returned the expected value.'));
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$this->assertToolkitOperationsCalled(array('resize', 'crop'));
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// Check the parameters.
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$calls = image_test_get_all_calls();
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$this->assertEqual($calls['crop'][0][1], 7.5, t('X was computed and passed correctly'));
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$this->assertEqual($calls['crop'][0][2], 0, t('Y was computed and passed correctly'));
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$this->assertEqual($calls['crop'][0][3], 5, t('Width was computed and passed correctly'));
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$this->assertEqual($calls['crop'][0][4], 10, t('Height was computed and passed correctly'));
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}
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/**
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* Test the image_rotate() function.
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*/
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function testRotate() {
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$this->assertTrue(image_rotate($this->image, 90, 1), t('Function returned the expected value.'));
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$this->assertToolkitOperationsCalled(array('rotate'));
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// Check the parameters.
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$calls = image_test_get_all_calls();
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$this->assertEqual($calls['rotate'][0][1], 90, t('Degrees were passed correctly'));
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$this->assertEqual($calls['rotate'][0][2], 1, t('Background color was passed correctly'));
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}
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/**
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* Test the image_crop() function.
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*/
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function testCrop() {
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$this->assertTrue(image_crop($this->image, 1, 2, 3, 4), t('Function returned the expected value.'));
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$this->assertToolkitOperationsCalled(array('crop'));
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// Check the parameters.
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$calls = image_test_get_all_calls();
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$this->assertEqual($calls['crop'][0][1], 1, t('X was passed correctly'));
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$this->assertEqual($calls['crop'][0][2], 2, t('Y was passed correctly'));
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$this->assertEqual($calls['crop'][0][3], 3, t('Width was passed correctly'));
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$this->assertEqual($calls['crop'][0][4], 4, t('Height was passed correctly'));
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}
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/**
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* Test the image_desaturate() function.
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*/
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function testDesaturate() {
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$this->assertTrue(image_desaturate($this->image), t('Function returned the expected value.'));
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$this->assertToolkitOperationsCalled(array('desaturate'));
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// Check the parameters.
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$calls = image_test_get_all_calls();
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$this->assertEqual(count($calls['desaturate'][0]), 1, t('Only the image was passed.'));
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}
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}
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/**
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* Test the core GD image manipulation functions.
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*/
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class ImageToolkitGdTestCase extends DrupalWebTestCase {
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// Colors that are used in testing.
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protected $black = array(0, 0, 0, 0);
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protected $red = array(255, 0, 0, 0);
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protected $green = array(0, 255, 0, 0);
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protected $blue = array(0, 0, 255, 0);
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protected $yellow = array(255, 255, 0, 0);
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protected $fuchsia = array(255, 0, 255, 0); // Used as background colors.
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protected $transparent = array(0, 0, 0, 127);
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protected $white = array(255, 255, 255, 0);
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protected $width = 40;
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protected $height = 20;
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public static function getInfo() {
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return array(
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'name' => t('Image GD manipulation tests'),
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'description' => t('Check that core image manipulations work properly: scale, resize, rotate, crop, scale and crop, and desaturate.'),
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'group' => t('Image API'),
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);
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}
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/**
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* Function to compare two colors by RGBa.
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*/
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function colorsAreEqual($color_a, $color_b) {
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// Fully transparent pixels are equal, regardless of RGB.
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if ($color_a[3] == 127 && $color_b[3] == 127) {
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return TRUE;
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}
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foreach ($color_a as $key => $value) {
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if ($color_b[$key] != $value) {
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return FALSE;
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}
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}
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return TRUE;
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}
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/**
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* Function for finding a pixel's RGBa values.
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*/
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function getPixelColor($image, $x, $y) {
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$color_index = imagecolorat($image->resource, $x, $y);
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$transparent_index = imagecolortransparent($image->resource);
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if ($color_index == $transparent_index) {
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return array(0, 0, 0, 127);
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}
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return array_values(imagecolorsforindex($image->resource, $color_index));
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}
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/**
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* Since PHP can't visually check that our images have been manipulated
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* properly, build a list of expected color values for each of the corners and
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* the expected height and widths for the final images.
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*/
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function testManipulations() {
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// If GD isn't available don't bother testing this.
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if (!drupal_function_exists('image_gd_check_settings') || !image_gd_check_settings()) {
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$this->pass(t('Image manipulations for the GD toolkit were skipped because the GD toolkit is not available.'));
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return;
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}
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// Typically the corner colors will be unchanged. These colors are in the
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// order of top-left, top-right, bottom-right, bottom-left.
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$default_corners = array($this->red, $this->green, $this->blue, $this->transparent);
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// A list of files that will be tested.
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$files = array(
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'image-test.png',
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'image-test.gif',
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'image-test.jpg',
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);
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// Setup a list of tests to perform on each type.
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$operations = array(
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'resize' => array(
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'function' => 'resize',
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'arguments' => array(20, 10),
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'width' => 20,
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'height' => 10,
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'corners' => $default_corners,
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),
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'scale_x' => array(
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'function' => 'scale',
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'arguments' => array(20, NULL),
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'width' => 20,
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'height' => 10,
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'corners' => $default_corners,
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),
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'scale_y' => array(
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'function' => 'scale',
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'arguments' => array(NULL, 10),
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'width' => 20,
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'height' => 10,
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'corners' => $default_corners,
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),
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'upscale_x' => array(
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'function' => 'scale',
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'arguments' => array(80, NULL, TRUE),
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'width' => 80,
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'height' => 40,
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'corners' => $default_corners,
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),
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'upscale_y' => array(
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'function' => 'scale',
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'arguments' => array(NULL, 40, TRUE),
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'width' => 80,
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'height' => 40,
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'corners' => $default_corners,
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),
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'crop' => array(
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'function' => 'crop',
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'arguments' => array(12, 4, 16, 12),
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'width' => 16,
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'height' => 12,
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'corners' => array_fill(0, 4, $this->white),
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),
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'scale_and_crop' => array(
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'function' => 'scale_and_crop',
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'arguments' => array(10, 8),
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'width' => 10,
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'height' => 8,
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'corners' => array_fill(0, 4, $this->black),
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),
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);
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// Systems using non-bundled GD2 don't have imagerotate. Test if available.
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if (drupal_function_exists('imagerotate')) {
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$operations += array(
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'rotate_5' => array(
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'function' => 'rotate',
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'arguments' => array(5, 0xFF00FF), // Fuchsia background.
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'width' => 42,
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'height' => 24,
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'corners' => array_fill(0, 4, $this->fuchsia),
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),
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'rotate_90' => array(
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'function' => 'rotate',
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'arguments' => array(90, 0xFF00FF), // Fuchsia background.
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'width' => 20,
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'height' => 40,
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'corners' => array($this->fuchsia, $this->red, $this->green, $this->blue),
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),
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'rotate_transparent_5' => array(
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'function' => 'rotate',
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'arguments' => array(5),
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'width' => 42,
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'height' => 24,
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'corners' => array_fill(0, 4, $this->transparent),
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),
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'rotate_transparent_90' => array(
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'function' => 'rotate',
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'arguments' => array(90),
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'width' => 20,
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'height' => 40,
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'corners' => array($this->transparent, $this->red, $this->green, $this->blue),
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),
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);
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}
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// Systems using non-bundled GD2 don't have imagefilter. Test if available.
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if (drupal_function_exists('imagefilter')) {
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$operations += array(
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'desaturate' => array(
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'function' => 'desaturate',
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'arguments' => array(),
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'height' => 20,
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'width' => 40,
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// Grayscale corners are a bit funky. Each of the corners are a shade of
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// gray. The values of these were determined simply by looking at the
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// final image to see what desaturated colors end up being.
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'corners' => array(
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array_fill(0, 3, 76) + array(3 => 0),
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array_fill(0, 3, 149) + array(3 => 0),
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array_fill(0, 3, 29) + array(3 => 0),
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array_fill(0, 3, 0) + array(3 => 127)
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),
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),
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);
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}
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foreach ($files as $file) {
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foreach ($operations as $op => $values) {
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// Load up a fresh image.
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$image = image_load($this->originalFileDirectory . '/simpletest/' . $file, 'gd');
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if (!$image) {
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$this->fail(t('Could not load image %file.', array('%file' => $file)));
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continue 2;
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}
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// Transparent GIFs and the imagefilter function don't work together.
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// There is a todo in image.gd.inc to correct this.
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if ($image->info['extension'] == 'gif') {
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if ($op == 'desaturate') {
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$values['corners'][3] = $this->white;
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}
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}
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// Perform our operation.
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$function = 'image_' . $values['function'];
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$arguments = array();
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$arguments[] = &$image;
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$arguments = array_merge($arguments, $values['arguments']);
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call_user_func_array($function, $arguments);
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// To keep from flooding the test with assert values, make a general
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// value for whether each group of values fail.
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$correct_dimensions_real = TRUE;
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$correct_dimensions_object = TRUE;
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$correct_colors = TRUE;
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// Check the real dimensions of the image first.
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if (imagesy($image->resource) != $values['height'] || imagesx($image->resource) != $values['width']) {
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$correct_dimensions_real = FALSE;
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}
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// Check that the image object has an accurate record of the dimensions.
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if ($image->info['width'] != $values['width'] || $image->info['height'] != $values['height']) {
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$correct_dimensions_object = FALSE;
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}
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// Now check each of the corners to ensure color correctness.
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foreach ($values['corners'] as $key => $corner) {
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// Get the location of the corner.
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switch ($key) {
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case 0:
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$x = 0;
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$y = 0;
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break;
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case 1:
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$x = $values['width'] - 1;
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$y = 0;
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break;
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case 2:
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$x = $values['width'] - 1;
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$y = $values['height'] - 1;
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break;
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case 3:
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$x = 0;
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$y = $values['height'] - 1;
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break;
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}
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$color = $this->getPixelColor($image, $x, $y);
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$correct_colors = $this->colorsAreEqual($color, $corner);
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}
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$directory = file_directory_path() . '/imagetests';
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file_check_directory($directory, FILE_CREATE_DIRECTORY);
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image_save($image, $directory . '/' . $op . '.' . $image->info['extension']);
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$this->assertTrue($correct_dimensions_real, t('Image %file after %action action has proper dimensions.', array('%file' => $file, '%action' => $op)));
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$this->assertTrue($correct_dimensions_object, t('Image %file object after %action action is reporting the proper height and width values.', array('%file' => $file, '%action' => $op)));
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// JPEG colors will always be messed up due to compression.
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if ($image->info['extension'] != 'jpg') {
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$this->assertTrue($correct_colors, t('Image %file object after %action action has the correct color placement.', array('%file' => $file, '%action' => $op)));
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}
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}
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}
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}
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}
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