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@pbiron
Last active June 7, 2018 19:47
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proposed WP unit tests for testing `_wp_attachment_backup_sizes` meta for ajax media editing
<?php
/**
* Admin ajax functions to be tested
*/
require_once( ABSPATH . 'wp-admin/includes/ajax-actions.php' );
/**
* Testing `_wp_attachment_backup_sizes` meta for ajax media editing
*
* Does NOT test that the edits made are correct
* ONLY tests the creation/modification of the `_wp_attachment_backup_sizes` meta
*
* @package WordPress
* @subpackage UnitTests
* @since x.y.z
* @group ajax
*
* @todo I've tagged all these tests with {@ticket 44127} because I decided they
* were needed while I was working on that ticket. However, I'm now thinking
* I should open a new ticket specifically stating the need for these tests,
* independent of that ticket. Opinions?
* @todo Are tests needed for flip & rotate as well as crop? I don't think so
* because I don't think the actual edit operation affects what is
* stored in _wp_attachment_backup_sizes, but need confirmation of that.
* @todo As far as I can tell, the tests that depend on IMAGE_EDIT_OVERWRITE
* must be at the end of the file. Is there any way to avoid this?
*/
class Tests_Ajax_MediaEditBackupSizes extends WP_Ajax_UnitTestCase {
/**
* The attachment ID
*
* @var int
*/
public $attachment_id;
/**
* Uploaded file bits.
*
* Keys are filenames and values are the result of calling `wp_upload_bits()` for those files.
*
* @var array
*/
public $uploaded_bits = array();
/**
* Setup the test fixture.
*/
public function setUp() {
parent::setUp();
require_once( ABSPATH . 'wp-admin/includes/image-edit.php' );
}
/**
* Tear down the test fixture.
*/
public function tearDown() {
// Cleanup
$this->remove_added_uploads();
parent::tearDown();
}
/**
* Upload an image.
*
* @param string $file
* @return int
*/
public function _insert_attachment( $file ) {
if ( ! isset( $this->uploaded_bits[ $file ] ) ) {
// only upload a given file once, regardless of how many tests it's used in
$filename = DIR_TESTDATA . '/images/' . $file;
$contents = file_get_contents( $filename );
$this->uploaded_bits[ $file ] = wp_upload_bits( basename( $filename ), null, $contents );
}
$this->attachment_id = $this->_make_attachment( $this->uploaded_bits[ $file ] );
}
/**
* Setup the `$_REQUEST` array for wp_save_image()
*
* @param array $args
*/
public function _setUpRequest( $args ) {
$defaults = array(
'action' => 'image-editor',
'context' => 'edit-attachment',
'postid' => $this->attachment_id,
);
$args = wp_parse_args( $args, $defaults );
foreach ( $args as $arg => $value ) {
$_REQUEST[$arg] = $value;
}
}
/**
* @ticket 44127
*/
public function testScaleImage() {
if ( defined( 'IMAGE_EDIT_OVERWRITE' ) && IMAGE_EDIT_OVERWRITE ) {
// skip test
$this->markTestSkipped( 'testScaleImage() skipped because IMAGE_EDIT_OVERWRITE is defined and is true' );
}
$file = '33772.jpg';
$this->_insert_attachment( $file );
// setup the expected backup sizes
$orig_metadata = wp_get_attachment_metadata( $this->attachment_id );
$expected = array(
'full-orig' => array(
'width' => $orig_metadata['width'],
'height' => $orig_metadata['height'],
'file' => $file,
),
);
$this->_setUpRequest( array( 'do' => 'scale', 'fwidth' => '1200', 'fheight' => '675' ) );
$ret = wp_save_image( $this->attachment_id );
$actual = get_post_meta( $this->attachment_id, '_wp_attachment_backup_sizes', true );
$this->assertEquals( $expected, $actual );
}
/**
* @ticket 44127
*/
public function testMultipleScaleImage() {
if ( defined( 'IMAGE_EDIT_OVERWRITE' ) && IMAGE_EDIT_OVERWRITE ) {
// skip test
$this->markTestSkipped( 'testMultipleScaleImage() skipped because IMAGE_EDIT_OVERWRITE is defined and is true' );
}
$file = '33772.jpg';
$this->_insert_attachment( $file );
// setup the initial expected backup sizes, we'll append to this
// each time thru the loop below
$orig_metadata = wp_get_attachment_metadata( $this->attachment_id );
$expected = array(
'full-orig' => array(
'width' => $orig_metadata['width'],
'height' => $orig_metadata['height'],
'file' => $file,
),
);
// save basename for the suffix hash
$basename = basename( $file, '.jpg' ) . '-e';
$scaled_sizes = array(
array( 'width' => '1200', 'height' => '675' ),
array( 'width' => '800', 'height' => '450' ),
array( 'width' => '400', 'height' => '225' ),
array( 'width' => '300', 'height' => '169' ),// same size as 'medium' size
);
// loop thru all the scaled_sizes and scale the image to each
foreach ( $scaled_sizes as $idx => $size ) {
$this->_setUpRequest( array( 'do' => 'scale', 'fwidth' => $size['width'], 'fheight' => $size['height'] ) );
$ret = wp_save_image( $this->attachment_id );
$metadata = wp_get_attachment_metadata( $this->attachment_id );
if ( 0 !== $idx ) {
// get the filename hash
$suffix = str_replace( $basename, '', basename( $metadata['file'], '.jpg' ) );
// append to the expected backup size
$expected['full-' . $suffix] = array(
'width' => $previous_size['width'],
'height' => $previous_size['height'],
'file' => $previous_filename,
);
}
// save these for the expected value the next time through the loop
$previous_filename = basename( $metadata['file'] );
$previous_size = $size;
}
$actual = get_post_meta( $this->attachment_id, '_wp_attachment_backup_sizes', true );
$this->assertEquals( $expected, $actual );
}
/**
* @ticket 44127
*/
public function testCropImageAll() {
$file = '33772.jpg';
$this->_insert_attachment( $file );
// setup the expected backup sizes
$orig_metadata = wp_get_attachment_metadata( $this->attachment_id );
$expected = array(
'full-orig' => array(
'width' => $orig_metadata['width'],
'height' => $orig_metadata['height'],
'file' => $file,
),
);
foreach ( $orig_metadata['sizes'] as $size => $data ) {
$expected[$size . '-orig'] = $data;
}
$this->_setUpRequest( array( 'do' => 'save', 'target' => 'all', 'history' => '[{\"c\":{\"x\":35,\"y\":23,\"w\":345,\"h\":186}}]' ) );
$ret = wp_save_image( $this->attachment_id );
$actual = get_post_meta( $this->attachment_id, '_wp_attachment_backup_sizes', true );
$this->assertEquals( $expected, $actual );
}
/**
* @ticket 44127
*/
public function testCropImageThumbnail() {
$file = '33772.jpg';
$this->_insert_attachment( $file );
// setup the expected backup sizes
$orig_metadata = wp_get_attachment_metadata( $this->attachment_id );
$expected = array(
'thumbnail-orig' => $orig_metadata['sizes']['thumbnail'],
);
$this->_setUpRequest( array( 'do' => 'save', 'target' => 'thumbnail', 'history' => '[{\"c\":{\"x\":35,\"y\":23,\"w\":345,\"h\":186}}]' ) );
$ret = wp_save_image( $this->attachment_id );
$actual = get_post_meta( $this->attachment_id, '_wp_attachment_backup_sizes', true );
$this->assertEquals( $expected, $actual );
}
/**
* @ticket 44127
*/
public function testCropImageNoThumbnail() {
$file = '33772.jpg';
$this->_insert_attachment( $file );
// setup the expected backup sizes
$orig_metadata = wp_get_attachment_metadata( $this->attachment_id );
$expected = array(
'full-orig' => array(
'width' => $orig_metadata['width'],
'height' => $orig_metadata['height'],
'file' => $file,
),
);
foreach ( $orig_metadata['sizes'] as $size => $data ) {
if ( 'thumbnail' !== $size ) {
$expected[$size . '-orig'] = $data;
}
}
$this->_setUpRequest( array( 'do' => 'save', 'target' => 'nothumb', 'history' => '[{\"c\":{\"x\":35,\"y\":23,\"w\":345,\"h\":186}}]' ) );
$ret = wp_save_image( $this->attachment_id );
$actual = get_post_meta( $this->attachment_id, '_wp_attachment_backup_sizes', true );
$this->assertEquals( $expected, $actual );
}
/**
* @ticket 44127
*/
public function testScaleImageImageEditOverwrite() {
if ( ! defined( 'IMAGE_EDIT_OVERWRITE' ) || ! IMAGE_EDIT_OVERWRITE ) {
// skip test
$this->markTestSkipped( 'testScaleImageImageEditOverwrite() skipped because IMAGE_EDIT_OVERWRITE is not defined or is false' );
}
$file = '33772.jpg';
$this->_insert_attachment( $file );
// setup the expected backup sizes
$orig_metadata = wp_get_attachment_metadata( $this->attachment_id );
$expected = array(
'full-orig' => array(
'width' => $orig_metadata['width'],
'height' => $orig_metadata['height'],
'file' => $file,
),
);
foreach ( $orig_metadata['sizes'] as $size => $data ) {
// @todo why isn't thumbnail-orig added to the backup sizes when IMAGE_EDIT_OVERWRITE is true?
// is that a bug in wp_save_image()?
// Note: this is NOT the same as skipping 'thumbnail-orig in testCropImageNoThumbnail(),
// which is expected
if ( 'thumbnail' !== $size ) {
$expected[$size . '-orig'] = $data;
}
}
$this->_setUpRequest( array( 'do' => 'scale', 'fwidth' => '1200', 'fheight' => '675' ) );
$ret = wp_save_image( $this->attachment_id );
$actual = get_post_meta( $this->attachment_id, '_wp_attachment_backup_sizes', true );
$this->assertEquals( $expected, $actual );
}
/**
* @ticket 44127
*/
public function testMultipleScaleImageImageEditOverwrite() {
if ( ! defined( 'IMAGE_EDIT_OVERWRITE' ) || ! IMAGE_EDIT_OVERWRITE ) {
// skip test
$this->markTestSkipped( 'testMultipleScaleImageImageEditOverwrite() skipped because IMAGE_EDIT_OVERWRITE is not defined or is false' );
}
$file = '33772.jpg';
$this->_insert_attachment( $file );
// setup the expected backup sizes
$orig_metadata = wp_get_attachment_metadata( $this->attachment_id );
$expected = array(
'full-orig' => array(
'width' => $orig_metadata['width'],
'height' => $orig_metadata['height'],
'file' => $file,
),
);
foreach ( $orig_metadata['sizes'] as $size => $data ) {
// @todo why isn't thumbnail-orig added to the backup sizes when IMAGE_EDIT_OVERWRITE is true?
// is that a bug in wp_save_image()?
// Note: this is NOT the same as skipping 'thumbnail-orig in testCropImageNoThumbnail(),
// which is expected
if ( 'thumbnail' !== $size ) {
$expected[$size . '-orig'] = $data;
}
}
// save basename for the suffix hash
$basename = basename( $file, '.jpg' ) . '-e';
$scaled_sizes = array(
array( 'width' => '1200', 'height' => '675' ),
array( 'width' => '800', 'height' => '450' ),
array( 'width' => '400', 'height' => '225' ),
array( 'width' => '300', 'height' => '169' ),// same size as 'medium' size
);
// loop thru all the scaled_sizes and scale the image to each
foreach ( $scaled_sizes as $idx => $size ) {
$this->_setUpRequest( array( 'do' => 'scale', 'fwidth' => $size['width'], 'fheight' => $size['height'] ) );
$ret = wp_save_image( $this->attachment_id );
$metadata = wp_get_attachment_metadata( $this->attachment_id );
}
$actual = get_post_meta( $this->attachment_id, '_wp_attachment_backup_sizes', true );
$this->assertEquals( $expected, $actual );
}
}
<phpunit
bootstrap="includes/bootstrap.php"
backupGlobals="false"
colors="true"
beStrictAboutTestsThatDoNotTestAnything="true"
>
<testsuites>
<!-- Default test suite to run all tests, modified from multiste.xml -->
<testsuite>
<directory suffix=".php">tests</directory>
<exclude>tests/phpunit/tests/actions/closures.php</exclude>
<exclude>tests/phpunit/tests/image/editor.php</exclude>
<exclude>tests/phpunit/tests/image/editorGd.php</exclude>
<exclude>tests/phpunit/tests/image/editorImagick.php</exclude>
<file phpVersion="5.3.0">tests/phpunit/tests/actions/closures.php</file>
<file phpVersion="5.3.0">tests/phpunit/tests/image/editor.php</file>
<file phpVersion="5.3.0">tests/phpunit/tests/image/editorGd.php</file>
<file phpVersion="5.3.0">tests/phpunit/tests/image/editorImagick.php</file>
</testsuite>
</testsuites>
<php>
<const name="WP_RUN_CORE_TESTS" value="1" />
</php>
<groups>
<include>
<group>44127</group>
</include>
</groups>
</phpunit>
<phpunit
bootstrap="includes/bootstrap.php"
backupGlobals="false"
colors="true"
beStrictAboutTestsThatDoNotTestAnything="true"
>
<testsuites>
<!-- Default test suite to run all tests, modified from multiste.xml -->
<testsuite>
<directory suffix=".php">tests</directory>
<exclude>tests/phpunit/tests/actions/closures.php</exclude>
<exclude>tests/phpunit/tests/image/editor.php</exclude>
<exclude>tests/phpunit/tests/image/editorGd.php</exclude>
<exclude>tests/phpunit/tests/image/editorImagick.php</exclude>
<file phpVersion="5.3.0">tests/phpunit/tests/actions/closures.php</file>
<file phpVersion="5.3.0">tests/phpunit/tests/image/editor.php</file>
<file phpVersion="5.3.0">tests/phpunit/tests/image/editorGd.php</file>
<file phpVersion="5.3.0">tests/phpunit/tests/image/editorImagick.php</file>
</testsuite>
</testsuites>
<php>
<const name="WP_RUN_CORE_TESTS" value="1" />
<const name="IMAGE_EDIT_OVERWRITE" value="1" />
</php>
<groups>
<include>
<group>44127</group>
</include>
</groups>
</phpunit>
@pbiron
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pbiron commented Jun 7, 2018

thanx for the reply.

DId you notice the @todo at the top of the file?

@todo I've tagged all these tests with {@ticket 44127} because I decided they
were needed while I was working on that ticket. However, I'm now thinking
I should open a new ticket specifically stating the need for these tests,
independent of that ticket. Opinions?

Do you think it's worthwhile adding a separate ticket just for these unit tests and then referencing that ticket in 44127?

@pbiron
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pbiron commented Jun 7, 2018

you could probably avoid uploading the same file each time by abstracting out the wp_upload_bits() part and saving the result as a property of the test class and reusing it when creating specific attachments.

Good idea.

Also whenever you're looping through sizes, you call get_post_meta() to get the value of the actual backup sizes array, but really you only need to do so once after the whole loop has completed in most cases.

Good catch...that's actually a holdover from a previous version of the test where I thought I needed within each loop to set things up for the next iteration...and I just forgot to remove it.

I've updated this gist with those changes and will now add them to the trac ticket.

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