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`WP_UnitTestCase::tearDown()` restores the test environment to the default conditions, including rolling back the MySQL transaction that the test takes place in, resetting globals, and unhooking test-specific filters. As such, all teardown routines for specific tests should happen before the parent class's `tearDown()` method is called. Failure to do so can cause database locks on certain configurations, among other problems. See #31537. git-svn-id: https://develop.svn.wordpress.org/trunk@31622 602fd350-edb4-49c9-b593-d223f7449a82
91 lines
2.3 KiB
PHP
91 lines
2.3 KiB
PHP
<?php
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/**
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* @group image
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*/
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abstract class WP_Image_UnitTestCase extends WP_UnitTestCase {
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/**
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* Set the image editor engine according to the unit test's specification
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*/
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public function setUp() {
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parent::setUp();
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if ( ! call_user_func( array( $this->editor_engine, 'test' ) ) ) {
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$this->markTestSkipped( sprintf('The image editor engine %s is not supported on this system', $this->editor_engine) );
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}
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add_filter( 'wp_image_editors', array( $this, 'setEngine' ), 10, 2 );
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}
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/**
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* Undo the image editor override
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*/
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public function tearDown() {
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remove_filter( 'wp_image_editors', array( $this, 'setEngine' ), 10, 2 );
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parent::tearDown();
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}
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/**
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* Override the image editor engine
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* @return string
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*/
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public function setEngine( $editors ) {
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return array( $this->editor_engine );
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}
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/**
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* Helper assertion for testing alpha on images using GD library
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*
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* @param string $image_path
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* @param array $point array(x,y)
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* @param int $alpha
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*/
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protected function assertImageAlphaAtPointGD( $image_path, $point, $alpha ) {
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$im = imagecreatefrompng( $image_path );
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$rgb = imagecolorat( $im, $point[0], $point[1] );
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$colors = imagecolorsforindex( $im, $rgb );
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$this->assertEquals( $alpha, $colors['alpha'] );
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}
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/**
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* Helper assertion for testing alpha on images using Imagick
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*
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* @param string $image_path
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* @param array $point array(x,y)
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* @param int $expected
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*/
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protected function assertImageAlphaAtPointImagick( $image_path, $point, $expected ) {
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$im = new Imagick( $image_path );
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$pixel = $im->getImagePixelColor( $point[0], $point[1] );
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$color = $pixel->getColorValue( imagick::COLOR_ALPHA );
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$this->assertEquals( $expected, $color );
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}
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/**
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* Helper assertion to check actual image dimensions on disk
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*
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* @param string $filename Image filename.
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* @param int $width Width to verify.
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* @param int $height Height to verify.
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*/
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protected function assertImageDimensions( $filename, $width, $height ) {
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$detected_width = 0;
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$detected_height = 0;
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$image_size = @getimagesize( $filename );
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if ( isset( $image_size[0] ) ) {
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$detected_width = $image_size[0];
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}
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if ( isset( $image_size[1] ) ) {
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$detected_height = $image_size[1];
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}
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$this->assertEquals( $width, $detected_width );
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$this->assertEquals( $height, $detected_height );
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}
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}
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