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Wordpress/tests/phpunit/includes/testcase-block-supports.php

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<?php
/**
* Test block supported styles.
*
* @package WordPress
* @subpackage UnitTests
* @since 5.6.0
*/
class Block_Supported_Styles_Test extends WP_UnitTestCase {
/**
* Registered block names.
*
* @var string[]
*/
private $registered_block_names = array();
/**
* Sets up each test method.
*/
public function setUp() {
parent::setUp();
}
/**
* Tear down each test method.
*/
public function tearDown() {
parent::tearDown();
while ( ! empty( $this->registered_block_names ) ) {
$block_name = array_pop( $this->registered_block_names );
unregister_block_type( $block_name );
}
}
/**
* Registers a block type.
*
* @param string|WP_Block_Type $name Block type name including namespace, or alternatively a
* complete WP_Block_Type instance. In case a WP_Block_Type
* is provided, the $args parameter will be ignored.
* @param array $args {
* Optional. Array of block type arguments. Any arguments may be defined, however the
* ones described below are supported by default. Default empty array.
*
* @type callable $render_callback Callback used to render blocks of this block type.
* }
*/
protected function register_block_type( $name, $args ) {
register_block_type( $name, $args );
$this->registered_block_names[] = $name;
}
/**
* Retrieves attribute such as 'class' or 'style' from the rendered block string.
*
* @param string $attribute Name of attribute to get.
* @param string $block String of rendered block to check.
*/
private function get_attribute_from_block( $attribute, $block ) {
$start_index = strpos( $block, $attribute . '="' ) + strlen( $attribute ) + 2;
$split_arr = substr( $block, $start_index );
$end_index = strpos( $split_arr, '"' );
return substr( $split_arr, 0, $end_index );
}
/**
* Retrieves block content from the rendered block string
* (i.e. what's wrapped by the block wrapper `<div />`).
*
* @param string $block String of rendered block to check.
*/
private function get_content_from_block( $block ) {
$start_index = strpos( $block, '>' ) + 1; // First occurrence of '>'.
$split_arr = substr( $block, $start_index );
$end_index = strrpos( $split_arr, '<' ); // Last occurrence of '<'.
return substr( $split_arr, 0, $end_index ); // String between first '>' and last '<'.
}
/**
* Block content to test with (i.e. what's wrapped by the block wrapper `<div />`).
*
* @var string
*/
const BLOCK_CONTENT = '
<p data-image-description="&lt;p&gt;Test!&lt;/p&gt;">Test</p>
<p>äöü</p>
<p>ß</p>
<p>系の家庭に</p>
<p>Example &lt;p&gt;Test!&lt;/p&gt;</p>
';
/**
* Returns the rendered output for the current block.
*
* @param array $block Block to render.
*
* @return string Rendered output for the current block.
*/
private function render_example_block( $block ) {
WP_Block_Supports::init();
WP_Block_Supports::$block_to_render = $block;
$wrapper_attributes = get_block_wrapper_attributes(
array(
'class' => 'foo-bar-class',
'style' => 'test: style;',
)
);
return '<div ' . $wrapper_attributes . '>' . self::BLOCK_CONTENT . '</div>';
}
/**
* Runs assertions that the rendered output has expected class/style attrs.
*
* @param array $block Block to render.
* @param string $expected_classes Expected output class attr string.
* @param string $expected_styles Expected output styles attr string.
*/
private function assert_styles_and_classes_match( $block, $expected_classes, $expected_styles ) {
$styled_block = $this->render_example_block( $block );
$class_list = $this->get_attribute_from_block( 'class', $styled_block );
$style_list = $this->get_attribute_from_block( 'style', $styled_block );
$this->assertEquals( $expected_classes, $class_list );
$this->assertEquals( $expected_styles, $style_list );
}
/**
* Runs assertions that the rendered output has expected content and class/style attrs.
*
* @param array $block Block to render.
* @param string $expected_classes Expected output class attr string.
* @param string $expected_styles Expected output styles attr string.
*/
private function assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles ) {
$styled_block = $this->render_example_block( $block );
// Ensure blocks to not add extra whitespace.
$this->assertEquals( $styled_block, trim( $styled_block ) );
$content = $this->get_content_from_block( $styled_block );
$class_list = $this->get_attribute_from_block( 'class', $styled_block );
$style_list = $this->get_attribute_from_block( 'style', $styled_block );
$this->assertEquals( self::BLOCK_CONTENT, $content );
$this->assertEqualSets(
explode( ' ', $expected_classes ),
explode( ' ', $class_list )
);
$this->assertEquals(
array_map( 'trim', explode( ';', $expected_styles ) ),
array_map( 'trim', explode( ';', $style_list ) )
);
}
/**
* Tests color support for named color support for named colors.
*/
function test_named_color_support() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'color' => true,
),
'render_callback' => true,
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'textColor' => 'red',
'backgroundColor' => 'black',
// The following should not be applied (subcatagories of color support).
'gradient' => 'some-gradient',
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example has-text-color has-red-color has-background has-black-background-color';
$expected_styles = 'test: style;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests color support for custom colors.
*/
function test_custom_color_support() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'color' => true,
),
'render_callback' => true,
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'style' => array(
'color' => array(
'text' => '#000',
'background' => '#fff',
// The following should not be applied (subcatagories of color support).
'gradient' => 'some-gradient',
'style' => array( 'color' => array( 'link' => '#fff' ) ),
),
),
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_styles = 'test: style; color: #000; background-color: #fff;';
$expected_classes = 'foo-bar-class wp-block-example has-text-color has-background';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests link color support for named colors.
*/
function test_named_link_color_support() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'color' => array(
'link' => true,
),
),
'render_callback' => true,
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'style' => array( 'color' => array( 'link' => 'var:preset|color|red' ) ),
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example has-link-color';
$expected_styles = 'test: style; --wp--style--color--link: var(--wp--preset--color--red);';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests link color support for custom colors.
*/
function test_custom_link_color_support() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'color' => array(
'link' => true,
),
),
'render_callback' => true,
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'style' => array( 'color' => array( 'link' => '#fff' ) ),
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example has-link-color';
$expected_styles = 'test: style; --wp--style--color--link: #fff;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests gradient color support for named gradients.
*/
function test_named_gradient_support() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'color' => array(
'gradients' => true,
),
),
'render_callback' => true,
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'gradient' => 'red',
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example has-background has-red-gradient-background';
$expected_styles = 'test: style;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests gradient color support for custom gradients.
*/
function test_custom_gradient_support() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'color' => array(
'gradients' => true,
),
),
'render_callback' => true,
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'style' => array( 'color' => array( 'gradient' => 'some-gradient-style' ) ),
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example has-background';
$expected_styles = 'test: style; background: some-gradient-style;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests that style attributes for colors are not applied without the support flag.
*/
function test_color_unsupported() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(),
'render_callback' => true,
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'textColor' => 'red',
'backgroundColor' => 'black',
'style' => array(
'color' => array(
'text' => '#000',
'background' => '#fff',
'link' => '#ggg',
'gradient' => 'some-gradient',
),
),
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example';
$expected_styles = 'test: style;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests support for named font sizes.
*/
function test_named_font_size() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'fontSize' => true,
),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'fontSize' => 'large',
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example has-large-font-size';
$expected_styles = 'test: style;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests support for custom font sizes.
*/
function test_custom_font_size() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'fontSize' => true,
),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'style' => array( 'typography' => array( 'fontSize' => '10' ) ),
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example';
$expected_styles = 'test: style; font-size: 10px;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests that font size attributes are not applied without support flag.
*/
function test_font_size_unsupported() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'fontSize' => 'large',
'style' => array( 'typography' => array( 'fontSize' => '10' ) ),
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example';
$expected_styles = 'test: style;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests line height support.
*/
function test_line_height() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'lineHeight' => true,
),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'style' => array( 'typography' => array( 'lineHeight' => '10' ) ),
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example';
$expected_styles = 'test: style; line-height: 10;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests line height not applied without support flag.
*/
function test_line_height_unsupported() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'style' => array( 'typography' => array( 'lineHeight' => '10' ) ),
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example';
$expected_styles = 'test: style;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests support for block alignment.
*/
function test_block_alignment() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'align' => true,
),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'align' => 'wide',
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example alignwide';
$expected_styles = 'test: style;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests block alignment requires support to be added.
*/
function test_block_alignment_unsupported() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'align' => 'wide',
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example';
$expected_styles = 'test: style;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests all support flags together to ensure they work together as expected.
*/
function test_all_supported() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'color' => array(
'gradients' => true,
'link' => true,
),
'fontSize' => true,
'lineHeight' => true,
'align' => true,
),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'align' => 'wide',
'style' => array(
'color' => array(
'text' => '#000',
'background' => '#fff',
'style' => array( 'color' => array( 'link' => '#fff' ) ),
),
'typography' => array(
'lineHeight' => '20',
'fontSize' => '10',
),
),
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example has-text-color has-background alignwide';
$expected_styles = 'test: style; color: #000; background-color: #fff; font-size: 10px; line-height: 20;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests that only styles for the supported flag are added.
* Verify one support enabled does not imply multiple supports enabled.
*/
function test_one_supported() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'fontSize' => true,
),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'align' => 'wide',
'style' => array(
'color' => array(
'text' => '#000',
'background' => '#fff',
'gradient' => 'some-gradient',
'style' => array( 'color' => array( 'link' => '#fff' ) ),
),
'typography' => array(
'lineHeight' => '20',
'fontSize' => '10',
),
),
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_classes = 'foo-bar-class wp-block-example';
$expected_styles = 'test: style; font-size: 10px;';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests custom classname server-side block support.
*/
function test_custom_classnames_support() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'className' => 'my-custom-classname',
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_styles = 'test: style;';
$expected_classes = 'foo-bar-class wp-block-example my-custom-classname';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests custom classname server-side block support opt-out.
*/
function test_custom_classnames_support_opt_out() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'customClassName' => false,
),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(
'className' => 'my-custom-classname',
),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_styles = 'test: style;';
$expected_classes = 'foo-bar-class wp-block-example';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Tests generated classname server-side block support opt-out.
*/
function test_generatted_classnames_support_opt_out() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(
'className' => false,
),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
$expected_styles = 'test: style;';
$expected_classes = 'foo-bar-class';
$this->assert_content_and_styles_and_classes_match( $block, $expected_classes, $expected_styles );
}
/**
* Ensures libxml_internal_errors is being used instead of @ warning suppression
*/
public function test_render_block_suppresses_warnings_without_at_suppression() {
$block_type_settings = array(
'attributes' => array(),
'supports' => array(),
);
$this->register_block_type( 'core/example', $block_type_settings );
$block = array(
'blockName' => 'core/example',
'attrs' => array(),
'innerBlock' => array(),
'innerContent' => array(),
'innerHTML' => array(),
);
// Custom error handler's see Warnings even if they are suppressed by the @ symbol.
$errors = array();
set_error_handler(
function ( $errno = 0, $errstr = '' ) use ( &$errors ) {
$errors[] = $errstr;
return false;
}
);
// HTML5 elements like <time> are not supported by the DOMDocument parser used by the block supports feature.
// This specific example is emitted by the "Display post date" setting in the latest-posts block.
apply_filters( 'render_block', '<div><time datetime="2020-06-18T04:01:43+10:00" class="wp-block-latest-posts__post-date">June 18, 2020</time></div>', $block );
restore_error_handler();
$this->assertEmpty( $errors, 'Libxml errors should be dropped.' );
}
}
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