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Improve Test Coverage for Auto Sizes Plugin #1879

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Improve Test Coverage for Auto Sizes Plugin #1879

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3d75ba9
Add missing tests to improve code coverage for auto-sizes plugin
Feb 18, 2025
914d191
Update test data provider array
Feb 18, 2025
f9b0351
Add coverage ignore notation
Feb 18, 2025
1b51f1f
Add coverage ignore notation
Feb 18, 2025
fa97ef2
Merge branch 'trunk' into add/code_coverage_auto_sizes
sarthak-19 Feb 18, 2025
b501973
Update doc comments of test function
Feb 19, 2025
6038a46
Fixed comment spacing
Feb 21, 2025
a248246
Merge branch 'trunk' into add/code_coverage_auto_sizes
sarthak-19 Feb 21, 2025
8efea15
Update test case for ignored lined
Mar 6, 2025
b15d7fe
Add code test coverage for a continue statement
Mar 11, 2025
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2 changes: 1 addition & 1 deletion plugins/auto-sizes/auto-sizes.php
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,6 @@
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly.
}
// @codeCoverageIgnoreEnd

// Define the constant.
if ( defined( 'IMAGE_AUTO_SIZES_VERSION' ) ) {
Expand All @@ -31,3 +30,4 @@
require_once __DIR__ . '/includes/auto-sizes.php';
require_once __DIR__ . '/includes/improve-calculate-sizes.php';
require_once __DIR__ . '/hooks.php';
// @codeCoverageIgnoreEnd
2 changes: 1 addition & 1 deletion plugins/auto-sizes/hooks.php
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Expand Up @@ -10,7 +10,6 @@
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly.
}
// @codeCoverageIgnoreEnd

/**
* Displays the HTML generator tag for the plugin.
Expand Down Expand Up @@ -42,3 +41,4 @@ function auto_sizes_render_generator(): void {
add_filter( 'render_block_core/cover', 'auto_sizes_filter_image_tag', 10, 3 );
add_filter( 'get_block_type_uses_context', 'auto_sizes_filter_uses_context', 10, 2 );
add_filter( 'render_block_context', 'auto_sizes_filter_render_block_context', 10, 2 );
// @codeCoverageIgnoreEnd
2 changes: 1 addition & 1 deletion plugins/auto-sizes/includes/auto-sizes.php
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Expand Up @@ -49,7 +49,7 @@ function auto_sizes_update_image_attributes( $attr ): array {
*/
function auto_sizes_update_content_img_tag( $html ): string {
if ( ! is_string( $html ) ) {
$html = '';
$html = ''; // @codeCoverageIgnore
}

$processor = new WP_HTML_Tag_Processor( $html );
Expand Down
6 changes: 3 additions & 3 deletions plugins/auto-sizes/includes/improve-calculate-sizes.php
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Expand Up @@ -16,7 +16,7 @@
*/
function auto_sizes_prime_attachment_caches( $content ): string {
if ( ! is_string( $content ) ) {
return '';
return ''; // @codeCoverageIgnore
}

$processor = new WP_HTML_Tag_Processor( $content );
Expand All @@ -26,7 +26,7 @@ function auto_sizes_prime_attachment_caches( $content ): string {
$class = $processor->get_attribute( 'class' );

if ( ! is_string( $class ) ) {
continue;
continue; // @codeCoverageIgnore
}

if ( preg_match( '/(?:^|\s)wp-image-([1-9][0-9]*)(?:\s|$)/', $class, $class_id ) === 1 ) {
Expand Down Expand Up @@ -63,7 +63,7 @@ function auto_sizes_prime_attachment_caches( $content ): string {
*/
function auto_sizes_filter_image_tag( $content, array $parsed_block, WP_Block $block ): string {
if ( ! is_string( $content ) ) {
return '';
return ''; // @codeCoverageIgnore
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Ditto. I don't think this should be ignored because technically this is a code path that can be tested.

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The assertion to test for with auto_sizes_prime_attachment_caches() is a bit tricky though. For one, an assertion can assert that the input $content is identical to the return value. But then otherwise, when there is a class with an attachment ID in it or no class attribute at all, then this means _prime_post_caches() is called or not. I guess you could check to see if a query was done on the DB or not?

}

$processor = new WP_HTML_Tag_Processor( $content );
Expand Down
87 changes: 87 additions & 0 deletions plugins/auto-sizes/tests/test-auto-sizes.php
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Expand Up @@ -266,6 +266,15 @@ public function data_provider_to_test_auto_sizes_update_content_img_tag(): array
'input' => '<img src="https://example.com/foo-300x225.jpg" srcset="https://example.com/foo-300x225.jpg 300w, https://example.com/foo-1024x768.jpg 1024w, https://example.com/foo-768x576.jpg 768w, https://example.com/foo-1536x1152.jpg 1536w, https://example.com/foo-2048x1536.jpg 2048w" sizes=",,,,,,,,,auto, (max-width: 650px) 100vw, 650px" loading="lazy">',
'expected' => '<img src="https://example.com/foo-300x225.jpg" srcset="https://example.com/foo-300x225.jpg 300w, https://example.com/foo-1024x768.jpg 1024w, https://example.com/foo-768x576.jpg 768w, https://example.com/foo-1536x1152.jpg 1536w, https://example.com/foo-2048x1536.jpg 2048w" sizes="auto, ,,,,,,,,,auto, (max-width: 650px) 100vw, 650px" loading="lazy">',
),
'expected_when_no_img_tag' => array(
'input' => '<p>No image here</p>',
'expected' => '<p>No image here</p>',
),
'expected_when_not_responsive' => array(
'input' => '<img src="https://example.com/foo.jpg" loading="lazy">',
'expected' => '<img src="https://example.com/foo.jpg" loading="lazy">',
),

);
}

Expand All @@ -279,4 +288,82 @@ public function test_auto_sizes_update_content_img_tag( string $input, string $e
auto_sizes_update_content_img_tag( $input )
);
}

/**
* @covers ::auto_sizes_attribute_includes_valid_auto
*/
public function test_auto_sizes_attribute_includes_valid_auto(): void {
// Test when 'auto' is the first item in the list.
$sizes_attr = 'auto, 100vw';
$this->assertTrue( auto_sizes_attribute_includes_valid_auto( $sizes_attr ) );

// Test when 'auto' is not the first item in the list.
$sizes_attr = '100vw, auto';
$this->assertFalse( auto_sizes_attribute_includes_valid_auto( $sizes_attr ) );
}

/**
* Provides data for the auto_sizes_update_image_attributes test.
*
* @return array<int,mixed[]> The data for the test cases.
*/
public function data_provider_for_auto_sizes_update_image_attributes(): array {
return array(
array(
array(
'loading' => 'eager',
'sizes' => '100vw',
),
array(
'loading' => 'eager',
'sizes' => '100vw',
),
),

// Test when the image is not responsive.
array( array( 'loading' => 'lazy' ), array( 'loading' => 'lazy' ) ),

// Test when 'auto' already exists in the sizes attribute.
array(
array(
'loading' => 'lazy',
'sizes' => 'auto, 100vw',
),
array(
'loading' => 'lazy',
'sizes' => 'auto, 100vw',
),
),

// Test when 'auto' needs to be added to the sizes attribute.
array(
array(
'loading' => 'lazy',
'sizes' => '100vw',
),
array(
'loading' => 'lazy',
'sizes' => 'auto, 100vw',
),
),

// Test when $attr is not an array.
array(
'attr' => array(),
'expected' => array(),
),
);
}

/**
* @covers ::auto_sizes_update_image_attributes
*
* @dataProvider data_provider_for_auto_sizes_update_image_attributes
*
* @param array<string, mixed> $attr Attributes to be updated.
* @param array<string, mixed> $expected Expected updated attributes.
*/
public function test_auto_sizes_update_image_attributes( array $attr, array $expected ): void {
$this->assertSame( $expected, auto_sizes_update_image_attributes( $attr ) );
}
}
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