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test-amp-style-sanitizer.php
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test-amp-style-sanitizer.php
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<?php
/**
* Test AMP_Style_Sanitizer.
*
* @package AMP
*/
// phpcs:disable WordPress.Arrays.MultipleStatementAlignment.DoubleArrowNotAligned
use AmpProject\AmpWP\Option;
use AmpProject\AmpWP\RemoteRequest\CachedResponse;
use AmpProject\AmpWP\RemoteRequest\CachedRemoteGetRequest;
use AmpProject\AmpWP\Tests\Helpers\AssertContainsCompatibility;
use AmpProject\AmpWP\Tests\Helpers\LoadsCoreThemes;
use AmpProject\AmpWP\Tests\Helpers\MarkupComparison;
use AmpProject\Dom\Document;
use AmpProject\AmpWP\Tests\Helpers\PrivateAccess;
use AmpProject\Exception\FailedToGetFromRemoteUrl;
/**
* Test AMP_Style_Sanitizer.
*/
class AMP_Style_Sanitizer_Test extends WP_UnitTestCase {
use AssertContainsCompatibility;
use MarkupComparison;
use PrivateAccess;
use LoadsCoreThemes;
/**
* Set up.
*/
public function setUp() {
parent::setUp();
global $wp_styles, $wp_scripts;
$wp_styles = null;
$wp_scripts = null;
delete_option( AMP_Options_Manager::OPTION_NAME ); // Make sure default reader mode option does not override theme support being added.
$this->register_core_themes();
}
/**
* Tear down.
*/
public function tearDown() {
parent::tearDown();
global $wp_styles, $wp_scripts, $wp_customize;
$wp_styles = null;
$wp_scripts = null;
$wp_customize = null;
$this->restore_theme_directories();
}
/**
* Get data for tests.
*
* @return array
*/
public function get_body_style_attribute_data() {
return [
'empty' => [
'',
'',
[],
],
'span_one_style' => [
'<span style="color: #00ff00;">This is green.</span>',
'<span data-amp-original-style="color: #00ff00;" class="amp-wp-bb01159">This is green.</span>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-bb01159{color:#0f0}',
],
],
'span_one_style_bad_format' => [
'<span style="color : #00ff00">This is green.</span>',
'<span data-amp-original-style="color : #00ff00" class="amp-wp-0837823">This is green.</span>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-0837823{color:#0f0}',
],
],
'span_two_styles_reversed' => [
'<span style="color: #00ff00; background-color: #000;">This is green.</span>',
'<span data-amp-original-style="color: #00ff00; background-color: #000;" class="amp-wp-be0c539">This is green.</span>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-be0c539{color:#0f0;background-color:#000}',
],
],
'span_display_none' => [
'<span style="display: none;">Kses-banned properties are allowed since Kses will have already applied if user does not have unfiltered_html.</span>',
'<span data-amp-original-style="display: none;" class="amp-wp-224b51a">Kses-banned properties are allowed since Kses will have already applied if user does not have unfiltered_html.</span>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-224b51a{display:none}',
],
],
'!important_is_ok' => [
'<span style="padding:1px; margin: 2px !important; outline: 3px;">!important is converted.</span>',
'<span data-amp-original-style="padding:1px; margin: 2px !important; outline: 3px;" class="amp-wp-6a75598">!important is converted.</span>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-6a75598{padding:1px;outline:3px}:root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-6a75598{margin:2px}',
],
],
'!important_with_spaces_also_converted' => [
'<span style="color: red ! important;">!important is converted.</span>',
'<span data-amp-original-style="color: red ! important;" class="amp-wp-952600b">!important is converted.</span>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-952600b{color:red}',
],
],
'!important_multiple_is_converted' => [
'<span style="color: red !important; background: blue!important;">!important is converted.</span>',
'<span data-amp-original-style="color: red !important; background: blue!important;" class="amp-wp-1e2bfaa">!important is converted.</span>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-1e2bfaa{color:red;background:blue}',
],
],
'!important_takes_precedence_over_inline' => [
'<header id="header" style="display: none;"><h1>This is the header.</h1></header><style>#header { display: block !important;width: 100%;background: #fff; }',
'<header id="header" data-amp-original-style="display: none;" class="amp-wp-224b51a"><h1>This is the header.</h1></header>',
[
'#header{width:100%;background:#fff}:root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) #header{display:block}',
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-224b51a{display:none}',
],
],
'two_nodes' => [
'<span style="color: #00ff00;"><span style="color: #ff0000;">This is red.</span></span>',
'<span data-amp-original-style="color: #00ff00;" class="amp-wp-bb01159"><span data-amp-original-style="color: #ff0000;" class="amp-wp-cc68ddc">This is red.</span></span>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-bb01159{color:#0f0}',
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-cc68ddc{color:#f00}',
],
],
'existing_class_attribute' => [
'<figure class="alignleft" style="background: #000"></figure>',
'<figure class="alignleft amp-wp-2864855" data-amp-original-style="background: #000"></figure>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-2864855{background:#000}',
],
],
'inline_style_element_with_multiple_rules_containing_selectors_is_removed' => [
'<style>div > span { font-weight:bold !important; font-style: italic; } @media screen and ( max-width: 640px ) { div > span { font-weight:normal !important; font-style: normal; } }</style><div><span>bold!</span></div>',
'<div><span>bold!</span></div>',
[
'div > span{font-style:italic}:root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) div > span{font-weight:bold}@media screen and ( max-width: 640px ){div > span{font-style:normal}:root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) div > span{font-weight:normal}}',
],
],
'illegal_unsafe_properties' => [
'<style>button { behavior: url(hilite.htc) /* IE only */; font-weight:bold; -moz-binding: url(http://www.example.org/xbl/htmlBindings.xml#checkbox); /*XBL*/ }</style><style> @media screen { button { behavior: url(hilite.htc) /* IE only */; font-weight:bold; -moz-binding: url(http://www.example.org/xbl/htmlBindings.xml#checkbox); /*XBL*/ } }</style><button>Click</button>',
'<button>Click</button>',
[
'button{font-weight:bold}',
'@media screen{button{font-weight:bold}}',
],
array_fill( 0, 4, AMP_Style_Sanitizer::CSS_SYNTAX_INVALID_PROPERTY_NOLIST ),
],
'illegal_at_rule_in_style_attribute' => [
'<span style="color:brown; @media screen { color:green }">invalid @-rule omitted.</span>',
'<span data-amp-original-style="color:brown; @media screen { color:green }" class="amp-wp-481af57">invalid @-rule omitted.</span>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-481af57{color:brown}',
],
[],
],
'illegal_at_rules_removed' => [
'
<html>
<head>
<meta name="viewport" content="width=device-width">
<style>@charset "utf-8"; @namespace svg url(http://www.w3.org/2000/svg); @page { margin: 1cm; } @viewport { initial-scale: 1.0 } @counter-style thumbs { system: cyclic; symbols: "\1F44D"; suffix: " "; } body { color: black; }</style>
</head>
<body></body>
</html>
',
'
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
</head>
<body></body>
</html>
',
[
'@page{margin:1cm}body{color:black}',
],
[ AMP_Style_Sanitizer::CSS_SYNTAX_INVALID_AT_RULE, AMP_Style_Sanitizer::CSS_SYNTAX_INVALID_AT_RULE ],
],
'allowed_at_rules_retained' => [
'<style>@media screen and ( max-width: 640px ) { body { font-size: small; } } @font-face { font-family: "Open Sans"; src: url("/fonts/OpenSans-Regular-webfont.woff2") format("woff2"); } @supports (display: grid) { div { display: grid; } } @-moz-keyframes appear { from { opacity: 0.0; } to { opacity: 1.0; } } @keyframes appear { from { opacity: 0.0; } to { opacity: 1.0; } }</style><div></div>',
'<div></div>',
[
'@media screen and ( max-width: 640px ){body{font-size:small}}@font-face{font-family:"Open Sans";src:url("/fonts/OpenSans-Regular-webfont.woff2") format("woff2")}@supports (display: grid){div{display:grid}}@-moz-keyframes appear{from{opacity:0}to{opacity:1}}@keyframes appear{from{opacity:0}to{opacity:1}}',
],
],
'selector_specificity' => [
'<style>#child {color:red !important} #parent #child {color:pink !important} .foo { color:blue !important; } #me .foo { color: green !important; }</style><div id="parent"><span id="child" class="foo bar baz">one</span><span style="color: yellow;">two</span><span style="color: purple !important;">three</span></div><div id="me"><span class="foo"></span></div>',
'<div id="parent"><span id="child" class="foo bar baz">one</span><span data-amp-original-style="color: yellow;" class="amp-wp-64b4fd4">two</span><span data-amp-original-style="color: purple !important;" class="amp-wp-ab79d9e">three</span></div><div id="me"><span class="foo"></span></div>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) #child{color:red}:root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) #parent #child{color:pink}:root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) .foo{color:blue}:root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) #me .foo{color:green}',
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-64b4fd4{color:yellow}',
':root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-ab79d9e{color:purple}',
],
],
'grid_lines' => [
'<style>.wrapper {display: grid;grid-template-columns: [main-start] 1fr [content-start] 1fr [content-end] 1fr [main-end];grid-template-rows: [main-start] 100px [content-start] 100px [content-end] 100px [main-end];}</style><div class="wrapper"></div>',
'<div class="wrapper"></div>',
[
'.wrapper{display:grid;grid-template-columns:[main-start] 1fr [content-start] 1fr [content-end] 1fr [main-end];grid-template-rows:[main-start] 100px [content-start] 100px [content-end] 100px [main-end]}',
],
],
'col_with_width_attribute' => [
'<table><colgroup><col width="253"/></colgroup></table>',
'<table><colgroup><col data-amp-original-style="width: 253px" class="amp-wp-cbcb5c2"></colgroup></table>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-cbcb5c2{width:253px}',
],
],
'col_with_percent_width_attribute' => [
'<table><colgroup><col width="50%"/></colgroup></table>',
'<table><colgroup><col data-amp-original-style="width: 50%" class="amp-wp-cd7753e"></colgroup></table>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-cd7753e{width:50%}',
],
],
'col_with_star_width_attribute' => [
'<table><colgroup><col width="0*"/></colgroup></table>',
'<table><colgroup><col></colgroup></table>',
[],
[ AMP_Tag_And_Attribute_Sanitizer::DISALLOWED_ATTR ],
],
'col_with_width_attribute_and_existing_style' => [
'<table><colgroup><col width="50" style="background-color: red; width: 60px"/></colgroup></table>',
'<table><colgroup><col data-amp-original-style="width: 50px;background-color: red; width: 60px" class="amp-wp-c8aa9e9"></colgroup></table>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-c8aa9e9{width:50px;width:60px;background-color:red}',
],
],
'nested_css_var_in_function' => [
'<style>.opacity3 { color: rgba(0, 0, 255, var(--opacity)); }</style><p class="opacity3"></p>',
'<p class="opacity3"></p>',
[
'.opacity3{color:rgba(0,0,255,var(--opacity))}',
],
],
'multi_selector_in_not_pseudo_class' => [
'<style>.widget:not(.widget_text,.jetpack_widget_social_icons[title="a,b"]) ul { color:red; }</style><div class="widget"><ul></ul></div>',
'<div class="widget"><ul></ul></div>',
[
'.widget:not(.widget_text,.jetpack_widget_social_icons[title="a,b"]) ul{color:red}',
],
],
'selector_with_escaped_char_class_name' => [
'<style>.lg\:w-full { width: 100%; }</style><div class="bg-black w-16 lg:w-full hover:bg-blue"></div>',
'<div class="bg-black w-16 lg:w-full hover:bg-blue"></div>',
[
'.lg\:w-full{width:100%}',
],
],
'semicolon_outside_of_rule_in_media_query' => [
'<style>@media (max-width: 450px) { .sidebar { padding: 0; }; } .sidebar { margin: 0 auto; }</style><div class="sidebar"></div>',
'<div class="sidebar"></div>',
[
'@media (max-width: 450px){.sidebar{padding:0}}.sidebar{margin:0 auto}',
],
],
'with_mustache_template' => [
'
<style>
.custom-population { color: red; }
</style>
<form id="myform" role="search" class="search-form" method="get" action="https://example.com/" target="_top" style="color: blue">
<amp-autocomplete filter="substring" items="." filter-value="title" max-entries="6" min-characters="2" submit-on-enter="" src="https://example.com/autocomplete/">
<template type="amp-mustache" id="amp-template-custom">
<div class="city-item" data-value="{{city}}, {{state}}" style="outline: solid 1px black;">
<div style="color: {{regionColor}}">{{city}}, {{state}}</div>
<div class="custom-population">Population: {{population}}</div>
</div>
</template>
</amp-autocomplete>
</form>
',
'
<form id="myform" role="search" class="search-form amp-wp-f2a1aff" method="get" action="https://example.com/" target="_top" data-amp-original-style="color: blue">
<amp-autocomplete filter="substring" items="." filter-value="title" max-entries="6" min-characters="2" submit-on-enter="" src="https://example.com/autocomplete/">
<template type="amp-mustache" id="amp-template-custom">
<div class="city-item amp-wp-d4ea4c7" data-value="{{city}}, {{state}}" data-amp-original-style="outline: solid 1px black;">
<div style="color: {{regionColor}}">{{city}}, {{state}}</div>
<div class="custom-population">Population: {{population}}</div>
</div>
</template>
</amp-autocomplete>
</form>
',
[
'.custom-population{color:red}',
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-f2a1aff{color:blue}',
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-d4ea4c7{outline:solid 1px black}',
],
],
'with_mustache_template_script' => [
'
<style>
.custom-population { color: red; }
</style>
<form id="myform" role="search" class="search-form" method="get" action="https://example.com/" target="_top" style="color: blue">
<amp-autocomplete filter="substring" items="." filter-value="title" max-entries="6" min-characters="2" submit-on-enter="" src="https://example.com/autocomplete/">
<script template="amp-mustache" type="text/plain" id="amp-template-custom">
<div class="city-item" data-value="{{city}}, {{state}}" style="outline: solid 1px black;">
<div style="color: {{regionColor}}">{{city}}, {{state}}</div>
<div class="custom-population">Population: {{population}}</div>
</div>
</script>
</amp-autocomplete>
</form>
',
'
<form id="myform" role="search" class="search-form amp-wp-f2a1aff" method="get" action="https://example.com/" target="_top" data-amp-original-style="color: blue">
<amp-autocomplete filter="substring" items="." filter-value="title" max-entries="6" min-characters="2" submit-on-enter="" src="https://example.com/autocomplete/">
<script template="amp-mustache" type="text/plain" id="amp-template-custom">
<div class="city-item amp-wp-d4ea4c7" data-value="{{city}}, {{state}}" data-amp-original-style="outline: solid 1px black;">
<div style="color: {{regionColor}}">{{city}}, {{state}}</div>
<div class="custom-population">Population: {{population}}</div>
</div>
</script>
</amp-autocomplete>
</form>
',
[
'.custom-population{color:red}',
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-f2a1aff{color:blue}',
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-d4ea4c7{outline:solid 1px black}',
],
],
'with_internal_amp_selectors_and_class_names' => [
'
<html>
<head>
<style>
amp-img[layout=intrinsic],
amp-img.i-amphtml-layout-responsive,
amp-img:not(:not(.i-amphtml-layout-responsive)), /* Double :not() to prevent tree-shaker from masking validation error. */
amp-img.size-full {
outline: solid 1px red;
}
</style>
<style>
amp-img > *:first-child,
amp-img > *:first-child:not(:not(.i-amphtml-sizer)), /* Double :not() to prevent tree-shaker from masking validation error. */
i-amphtml-sizer.i-amphtml-sizer
{
outline: dotted 2px orange;
}
</style>
</head>
<body>
<amp-img class="size-full wp-image-904 alignright amp-wp-enforced-sizes i-amphtml-layout-intrinsic i-amphtml-layout-size-defined" title="Image Alignment 150x150" alt="Image Alignment 150x150" src="https://example.com/wp-content/uploads/2013/03/image-alignment-150x150-1.jpg" width="150" height="150" layout="intrinsic" i-amphtml-layout="intrinsic">
<i-amphtml-sizer class="i-amphtml-sizer">
<img alt="" aria-hidden="true" class="i-amphtml-intrinsic-sizer" role="presentation" src="data:image/svg+xml;base64,PHN2ZyBoZWlnaHQ9JzE1MCcgd2lkdGg9JzE1MCcgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJyB2ZXJzaW9uPScxLjEnLz4=">
</i-amphtml-sizer>
<noscript>
<img loading="lazy" class="size-full wp-image-904 alignright" title="Image Alignment 150x150" alt="Image Alignment 150x150" src="https://example.com/wp-content/uploads/2013/03/image-alignment-150x150-1.jpg" width="150" height="150">
</noscript>
</amp-img>
</body>
</html>
',
'
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
</head>
<body>
<amp-img class="size-full wp-image-904 alignright amp-wp-enforced-sizes" title="Image Alignment 150x150" alt="Image Alignment 150x150" src="https://example.com/wp-content/uploads/2013/03/image-alignment-150x150-1.jpg" width="150" height="150" layout="intrinsic">
<noscript>
<img loading="lazy" class="size-full wp-image-904 alignright" title="Image Alignment 150x150" alt="Image Alignment 150x150" src="https://example.com/wp-content/uploads/2013/03/image-alignment-150x150-1.jpg" width="150" height="150">
</noscript>
</amp-img>
</body>
</html>
',
[
'amp-img[layout=intrinsic],amp-img.size-full{outline:solid 1px red}',
'amp-img > *:first-child{outline:dotted 2px orange}',
],
[
AMP_Style_Sanitizer::CSS_DISALLOWED_SELECTOR,
AMP_Style_Sanitizer::CSS_DISALLOWED_SELECTOR,
AMP_Style_Sanitizer::CSS_DISALLOWED_SELECTOR,
AMP_Style_Sanitizer::CSS_DISALLOWED_SELECTOR,
AMP_Style_Sanitizer::DISALLOWED_ATTR_CLASS_NAME,
AMP_Style_Sanitizer::DISALLOWED_ATTR_CLASS_NAME,
AMP_Style_Sanitizer::DISALLOWED_ATTR_CLASS_NAME,
AMP_Style_Sanitizer::DISALLOWED_ATTR_CLASS_NAME,
AMP_Tag_And_Attribute_Sanitizer::MANDATORY_TAG_ANCESTOR,
AMP_Tag_And_Attribute_Sanitizer::DISALLOWED_TAG,
AMP_Tag_And_Attribute_Sanitizer::DISALLOWED_ATTR,
],
],
];
}
/**
* Test sanitizer for style attributes that appear in the body.
*
* @dataProvider get_body_style_attribute_data
* @param string $source Source.
* @param string $expected_content Expected content.
* @param string $expected_stylesheets Expected stylesheets.
* @param array $expected_errors Expected error codes.
*/
public function test_body_style_attribute_sanitizer( $source, $expected_content, $expected_stylesheets, $expected_errors = [] ) {
$use_document_element = false !== strpos( $source, '<html' );
if ( $use_document_element ) {
$dom = Document::fromHtml( $source );
} else {
$dom = AMP_DOM_Utils::get_dom_from_content( $source );
}
$error_codes = [];
$args = [
'use_document_element' => $use_document_element,
'validation_error_callback' => static function( $error ) use ( &$error_codes ) {
$error_codes[] = $error['code'];
},
];
$sanitizer = new AMP_Style_Sanitizer( $dom, $args );
$sanitizer->sanitize();
$meta_sanitizer = new AMP_Meta_Sanitizer( $dom, $args );
$meta_sanitizer->sanitize();
$validating_sanitizer = new AMP_Tag_And_Attribute_Sanitizer( $dom, $args );
$validating_sanitizer->sanitize();
if ( $use_document_element && count( $sanitizer->get_stylesheets() ) > 0 ) {
$this->assertEquals( 1, $dom->xpath->query( '//style[ @amp-custom ]' )->length, 'Expected stylesheet to be present in page. Failure means INVALID_CDATA_CSS_I_AMPHTML_NAME happened.' );
}
// Remove style elements since we will examine the underlying stylesheets instead.
foreach ( iterator_to_array( $dom->getElementsByTagName( 'style' ) ) as $element ) {
if ( 'noscript' === $element->parentNode->nodeName ) {
$element->parentNode->parentNode->removeChild( $element->parentNode );
} else {
$element->parentNode->removeChild( $element );
}
}
// Test content.
if ( $use_document_element ) {
$content = $dom->saveHTML();
} else {
$content = AMP_DOM_Utils::get_content_from_dom( $dom );
}
$this->assertEqualMarkup( $expected_content, $content );
// Test stylesheet.
$this->assertEquals( $expected_stylesheets, array_values( $sanitizer->get_stylesheets() ) );
$this->assertEquals( $expected_errors, $error_codes );
}
/**
* Get link and style test data.
*
* @return array
*/
public function get_link_and_style_test_data() {
return [
'multiple_amp_custom_and_other_styles' => [
'<html amp><head><meta charset="utf-8"><style amp-custom>b {color:red !important}</style><style amp-custom>i {color:blue}</style><style type="text/css">u {color:green; text-decoration: underline !important}</style></head><body><style>s {color:yellow} /* So !important! */</style><b>1</b><i>i</i><u>u</u><s>s</s></body></html>',
[
':root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) b{color:red}',
'i{color:blue}',
'u{color:green}:root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) u{text-decoration:underline}',
's{color:yellow}',
],
[],
],
'style_elements_with_link_elements' => [
sprintf(
'<html amp><head><meta charset="utf-8"><style type="text/css">strong.before-dashicon {color:green}</style><link rel="stylesheet" href="%s"><style type="text/css">strong.after-dashicon {color:green}</style></head><body><style>s {color:yellow !important}</style><s class="before-dashicon"></s><strong class="dashicons-dashboard"></strong><strong class="after-dashicon"></strong></body></html>', // phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
includes_url( 'css/dashicons.css' )
),
[
'strong.before-dashicon',
'.dashicons-dashboard:before',
'strong.after-dashicon',
':root:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_) s{color:yellow}',
],
[],
],
'style_with_no_head' => [
'<html amp><body>Not good!<style>body{color:red}</style></body></html>',
[
'body{color:red}',
],
[],
],
'style_with_not_selectors' => [
'<html amp><head><meta charset="utf-8"><style amp-custom>body.bar > p:not(.baz) { color:red; } body.foo:not(.bar) > p { color:blue; } body.foo:not(.bar) p:not(.baz) { color:green; } body.foo p { color:yellow; }</style></head><body class="foo"><p>Hello</p></body></html>',
[
'body.foo:not(.bar) > p{color:blue}body.foo:not(.bar) p:not(.baz){color:green}body.foo p{color:yellow}',
],
[],
],
'style_with_attribute_selectors' => [
'<html amp><head><meta charset="utf-8"><style amp-custom>.social-navigation a[href*="example.com"] { color:red; } .social-navigation a.examplecom { color:blue; }</style></head><body class="foo"><nav class="social-navigation"><a href="https://example.com/">Example</a></nav></body></html>',
[
'.social-navigation a[href*="example.com"]{color:red}',
],
[],
],
'style_on_root_element' => [
'<html amp style="color:red;"><head><meta charset="utf-8"><style amp-custom>html { background-color: blue !important; }</style></head><body>Hi</body></html>',
[
'html:not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_):not(#_){background-color:blue}',
':root:not(#_):not(#_):not(#_):not(#_):not(#_) .amp-wp-10b06ba{color:red}',
],
[],
],
'styles_with_dynamic_elements' => [
implode(
'',
[
'<html amp><head><meta charset="utf-8">',
'<style amp-custom>b.foo, form [submit-success] b, div[submit-failure] b, form.unused b { color: green }</style>',
'<style amp-custom>.dead-list li .highlighted, amp-live-list li .highlighted { background: yellow }</style>',
'<style amp-custom>article.missing amp-live-list li .highlighted { background: yellow }</style>',
'<style amp-custom>body amp-list .portland { color:blue; }</style>',
'<style amp-custom>amp-script .loaded { color:brown; }</style>',
'</head><body>',
'<form method="post" action-xhr="https://example.com/subscribe" target="_top"><div submit-success><template type="amp-mustache"><b>Thanks</b>, {{name}}}</template></div></form>',
'<amp-live-list id="my-live-list" data-poll-interval="15000" data-max-items-per-page="20"><button update on="tap:my-live-list.update">You have updates!</button><ul items><li id="live-list-2-item-2" data-sort-time="1464281932879">Hello</li></ul></amp-live-list>',
'<amp-list width="auto" height="100" layout="fixed-height" src="https://ampproject-b5f4c.firebaseapp.com/examples/data/amp-list-urls.json"> <template type="amp-mustache"> <div class="url-entry"> <a href="{{url}}" class="{{class}}">{{title}}</a> </div> </template> </amp-list>',
'<amp-script src="https://example.com/populate/server/time">The current server time is <time class="loading">loading...</time>.</amp-script>',
'</body></html>',
]
),
[
'form [submit-success] b{color:green}', // The [submit-failure] selector is removed because there is no div[submit-failure].
'amp-live-list li .highlighted{background:yellow}',
'body amp-list .portland{color:blue}',
'amp-script .loaded{color:brown}',
],
[],
],
'styles_with_calc_functions' => [
implode(
'',
[
'<html amp><head>',
'<style amp-custom>body { color: red; width: calc( 1px + calc( 2vh / 3 ) - 2px * 5 ); outline: solid 1px blue; }</style>',
'<style amp-custom>.alignwide{ max-width: -webkit-calc(50% + 22.5rem); border: solid 1px red; }</style>',
'<style amp-custom>.alignwide{ height: calc(10% + ( 1px ); color: red; content: ")"}</style>', // Test unbalanced parentheses.
'</head><body><div class="alignwide"></div></body></html>',
]
),
[
'body{color:red;width:calc(1px + calc(2vh / 3) - 2px * 5);outline:solid 1px blue}',
'.alignwide{max-width:-webkit-calc(50% + 22.5rem);border:solid 1px red}',
'.alignwide{color:red;content:")"}',
],
[],
],
'style_with_media_element' => [
'<html amp><head><meta charset="utf-8"><style media="print">.print { display:none; }</style></head><body><button class="print" on="tap:AMP.print()"></button></body></html>',
[
'@media print{.print{display:none}}',
],
[],
],
'selectors_with_ie_hacks_removed' => [
'<html amp><head><meta charset="utf-8"><style>* html span { color:red; background: blue !important; } span { text-decoration:underline; } *+html span { border: solid green; }</style></head><body><span>Test</span></body></html>',
[
'span{text-decoration:underline}',
],
[],
],
'unamerican_lang_attribute_selectors_removed' => [ // USA is used for convenience here. No political statement intended.
'<html lang="en-US" amp><head><meta charset="utf-8"><style>html[lang=en-US] {color:red} html[lang="en-US"] {color:white} html[lang^=en] {color:blue} html[lang="en-CA"] {color:red} html[lang^=ar] { color:green; } html[lang="es-MX"] { color:green; }</style></head><body><span>Test</span></body></html>',
[
'html[lang=en-US]{color:red}html[lang="en-US"]{color:white}html[lang^=en]{color:blue}',
],
[],
],
'unamerican_lang_selector_selectors_removed' => [ // USA is used for convenience here. No political statement intended.
'
<html amp><head><meta charset="utf-8">
<style>
html:lang(en-US) { color:red; }
body span:lang(en-US) { color:red; }
html:lang(en) {color:white; }
.test:lang(en-us, en-CA) {color:white; }
html span.test:lang(en-US) { color: blue;}
html:lang("en-US") span.test { color: blue;}
html:lang(en-CA) {color:red; }
html:lang(ar) { color:green; }
html:lang(es-MX) { color:green; }
</style>
</head><body><span class="test">Test</span></body></html>
',
[
'html:lang(en-US){color:red}body span:lang(en-US){color:red}html:lang(en){color:white}.test:lang(en-us, en-CA){color:white}html span.test:lang(en-US){color:blue}html:lang("en-US") span.test{color:blue}',
],
[],
],
'external_link_without_css_file_extension' => [
'<html amp><head><meta charset="utf-8"><link rel="stylesheet" href="https://example.com/_static/??-eJx9kN1SAyEMhV9Iip3aOl44Pgs"></head><body><span>externally-styled</span></body></html>', // phpcs:ignore
[
'span:before{content:"Returned from: https://example.com/_static/??-eJx9kN1SAyEMhV9Iip3aOl44Pgs"}',
],
[],
],
'charset_ruleset_removed_without_warning' => [
'<html amp><body><style>@charset "utf-8"; body { color:limegreen; }</style></body></html>',
[
'body{color:limegreen}',
],
[],
],
'dynamic_classes_preserved_always' => [
'
<html amp><head>
<style> .amp-viewer { color: blue; } </style>
<style> .amp-mode-touch { color: blanchedalmond; } </style>
<style> .amp-mode-mouse { color: bisque; } </style>
<style> .amp-mode-keyboard-active { color: burlywood; } </style>
<style> .amp-referrer-www-google-com { color: red; } </style>
<style> .amp-active { color: green } </style>
<style> .amp-carousel-slide { outline: solid 1px red; } </style>
<style> .amp-date-picker-selecting { outline: solid 2px red; } </style>
<style> .amp-form-submit-success { color: green; } </style>
<style> .amp-access-laterpay-container { color: purple} </style>
<style> .amp-image-lightbox-caption { color: brown} </style>
<style> .amp-live-list-item-new { color: lime} </style>
<style> .amp-sidebar-toolbar-target-hidden { color: lavender} </style>
<style> .amp-sticky-ad-close-button { color: aliceblue} </style>
<style> .amp-docked-video-shadow { color: azure} </style>
<style> .amp-geo-pending { color: saddlebrown; } </style>
<style> .amp-geo-no-group { color: ghostwhite; } </style>
<style> .amp-geo-group-foo { color: peru; } </style>
<style> .amp-iso-country-us { color: oldlace; } </style>
<style> .non-existent { color: black; } </style>
<style> .amp-video-eq { display: none; } </style>
</head><body><p>Hello!</p></body></html>
',
[
'.amp-viewer{color:blue}',
'.amp-mode-touch{color:blanchedalmond}',
'.amp-mode-mouse{color:bisque}',
'.amp-mode-keyboard-active{color:burlywood}',
'.amp-referrer-www-google-com{color:red}',
],
[],
],
'dynamic_classes_and_attributes_preserved_conditionally' => [
'
<html amp><head>
<style> .amp-viewer { color: blue; } </style>
<style> .amp-referrer-www-google-com { color: red; } </style>
<style> .amp-active { color: green } </style>
<style> .amp-carousel-slide { outline: solid 1px red; } </style>
<style> .amp-date-picker-selecting { outline: solid 2px red; } </style>
<style> .amp-form-submit-success { color: green; } </style>
<style> .amp-access-laterpay-container { color: purple} </style>
<style> .amp-image-lightbox-caption { color: brown} </style>
<style> .amp-live-list-item-new { color: lime} #my-live-list [data-tombstone] { display: block; }</style>
<style> .amp-sidebar-toolbar-target-hidden { color: lavender} #sidebar1[open] { outline: solid 1px red; }</style>
<style> .amp-sticky-ad-close-button { color: aliceblue} </style>
<style> .amp-docked-video-shadow { color: azure} </style>
<style> .amp-geo-pending { color: saddlebrown; } </style>
<style> .amp-geo-no-group { color: ghostwhite; } </style>
<style> .amp-geo-group-foo { color: peru; } </style>
<style> .amp-iso-country-us { color: oldlace; } </style>
<style> .amp-video-eq { display: none; } </style>
<style> #accord section[expanded] { outline: solid 1px blue; } </style>
<style> .non-existent { color: black; } </style>
</head>
<body>
<amp-user-notification layout="nodisplay" id="amp-user-notification1" data-show-if-href="https://foo.com/api/show-api?timestamp=TIMESTAMP" data-dismiss-href="https://foo.com/api/dismissed"> This site uses cookies to personalize content. <a href="">Learn more.</a> <button on="tap:amp-user-notification1.dismiss">I accept</button> </amp-user-notification>
<amp-carousel type="slides" width="450" height="300" controls loop autoplay delay="3000" data-next-button-aria-label="Go to next slide" data-previous-button-aria-label="Go to previous slide"> <amp-img src="images/image1.jpg" width="450" height="300"></amp-img> <amp-img src="images/image2.jpg" width="450" height="300"></amp-img> <amp-img src="images/image3.jpg" width="450" height="300"></amp-img></amp-carousel>
<amp-date-picker layout="fixed-height" height="360"></amp-date-picker>
<form action="https://example.com/" target="_top" method="get"><input name="search" type="search" required></form>
<section amp-access="NOT error AND NOT access" amp-access-hide><div id="amp-access-laterpay-dialog" class="amp-access-laterpay"></div></section>
<amp-image-lightbox id="lightbox1" layout="nodisplay"></amp-image-lightbox>
<amp-live-list id="my-live-list" data-poll-interval="15000" data-max-items-per-page="20"> <div update class="outer-container"> <div class="inner-container"> <button class="btn" on="tap:my-live-list.update">Click me!</button> </div> </div> <div items></div> </amp-live-list>
<amp-sidebar id="sidebar1" layout="nodisplay" side="right"><nav toolbar="(max-width: 767px)" toolbar-target="target-element"><ul><li></li></ul></nav></amp-sidebar>
<amp-sticky-ad layout="nodisplay"><amp-ad width="320" height="50" type="doubleclick" data-slot="/35096353/amptesting/formats/sticky"></amp-ad></amp-sticky-ad>
<amp-video dock width="720" height="305" layout="responsive" src="https://yourhost.com/videos/myvideo.mp4" poster="https://yourhost.com/posters/poster.png" artwork="https://yourhost.com/artworks/artwork.png" title="Awesome video" artist="Awesome artist" album="Amazing album"></amp-video>
<amp-geo layout="nodisplay"><script type="application/json">{"ISOCountryGroups": {"foo":["us"]}}</script></amp-geo>
<amp-accordion id="accord" disable-session-states><section><h2>Section 1</h2><p>Content in section 1.</p></section><section><h2>Section 2</h2><div>Content in section 2.</div></section></amp-accordion>
</body>
</html>
',
[
'.amp-viewer{color:blue}',
'.amp-referrer-www-google-com{color:red}',
'.amp-active{color:green}',
'.amp-carousel-slide{outline:solid 1px red}',
'.amp-date-picker-selecting{outline:solid 2px red}',
'.amp-form-submit-success{color:green}',
'.amp-access-laterpay-container{color:purple}',
'.amp-image-lightbox-caption{color:brown}',
'.amp-live-list-item-new{color:lime}#my-live-list [data-tombstone]{display:block}',
'.amp-sidebar-toolbar-target-hidden{color:lavender}#sidebar1[open]{outline:solid 1px red}',
'.amp-sticky-ad-close-button{color:aliceblue}',
'.amp-docked-video-shadow{color:azure}',
'.amp-geo-pending{color:saddlebrown}',
'.amp-geo-no-group{color:ghostwhite}',
'.amp-geo-group-foo{color:peru}',
'.amp-iso-country-us{color:oldlace}',
'.amp-video-eq{display:none}',
'#accord section[expanded]{outline:solid 1px blue}',
],
[],
],
'test_with_dev_mode' => [
'<html amp data-ampdevmode=""><body data-ampdevmode="" style="background:red !important"><link rel="stylesheet" href="https://example.com/foo.css" data-ampdevmode=""><style data-ampdevmode="">body{color:red !important}</style></body></html>', // phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
[],
[],
],
'amp_experiment' => [
'
<html amp>
<head>
<style>
body[amp-x-button-color-experiment="0"] .button-color-experiment {
color: red;
}
</style>
<style>
body[amp-x-button-color-experiment="1"] .button-color-experiment {
color: green;
}
</style>
<style>
body[amp-x-button-color-experiment="2"] .button-color-experiment {
color: blue;
}
</style>
</head>
<body>
<amp-experiment>
<script type="application/json">
{
"button-color-experiment": {
"variants": {
"0": 30,
"1": 30,
"2": 30
}
}
}
</script>
</amp-experiment>
<button class="button-color-experiment">Click here</button>
</body>
</html>
',
[
'body[amp-x-button-color-experiment="0"] .button-color-experiment{color:red}',
'body[amp-x-button-color-experiment="1"] .button-color-experiment{color:green}',
'body[amp-x-button-color-experiment="2"] .button-color-experiment{color:blue}',
],
[],
],
'classes_in_mustache_template' => [
'
<html>
<head>
<noscript>
<style>h2.one { color: green }</style>
</noscript>
</head>
<body>
<style>
h2.two { color: red }
</style>
<template type="amp-mustache">
<h2 class="one">One</h2>
</template>
<script type="text/plain" template="amp-mustache">
<h2 class="two">Two</h2>
</script>
</body>
</html>
',
[
'h2.one{color:green}',
'h2.two{color:red}',
],
[],
],
];
}
/**
* Test style elements and link elements.
*
* @dataProvider get_link_and_style_test_data
* @param string $source Source.
* @param array $expected_stylesheets Expected stylesheets.
* @param array $expected_errors Expected error codes.
*/
public function test_link_and_style_elements( $source, $expected_stylesheets, $expected_errors = [] ) {
add_filter(
'locale',
static function() {
return 'en_US';
}
);
add_filter(
'pre_http_request',
static function( $preempt, $request, $url ) {
$preempt = [
'response' => [
'code' => 200,
],
'headers' => [
'content-type' => 'text/css',
],
'body' => sprintf( 'span:before { content: "Returned from: %s"; }', $url ),
];
return $preempt;
},
10,
3
);
$dom = Document::fromHtml( $source );
$error_codes = [];
$args = [
'use_document_element' => true,
'validation_error_callback' => static function( $error ) use ( &$error_codes ) {
$error_codes[] = $error['code'];
},
];
$sanitizer = new AMP_Style_Sanitizer( $dom, $args );
$sanitizer->sanitize();
$validating_sanitizer = new AMP_Tag_And_Attribute_Sanitizer( $dom, $args );
$validating_sanitizer->sanitize();
$sanitized_html = $dom->saveHTML( $dom->documentElement );
$actual_stylesheets = array_values( array_filter( $sanitizer->get_stylesheets() ) );
$this->assertEquals( $expected_errors, $error_codes );
$this->assertCount( count( $expected_stylesheets ), $actual_stylesheets );
foreach ( $expected_stylesheets as $i => $expected_stylesheet ) {
if ( empty( $expected_stylesheet ) ) {
$this->assertEmpty( $actual_stylesheets[ $i ] );
continue;
}
if ( false === strpos( $expected_stylesheet, '{' ) ) {
$this->assertStringContains( $expected_stylesheet, $actual_stylesheets[ $i ] );
} else {
$this->assertEquals( $expected_stylesheet, $actual_stylesheets[ $i ] );
}
$this->assertStringContains( $expected_stylesheet, $sanitized_html );
}
if ( $actual_stylesheets ) {
$this->assertStringContains( "\n\n/*# sourceURL=amp-custom.css */", $sanitized_html );
}
}
/**
* Test that tree shaking and CSS limits are disabled when in the Customizer Preview.
*/
public function test_tree_shaking_disabled_in_customizer_preview() {
$active_theme = 'twentynineteen';
$reader_theme = 'twentytwenty';
if ( ! wp_get_theme( $active_theme )->exists() || ! wp_get_theme( $reader_theme )->exists() ) {
$this->markTestSkipped();
}
switch_theme( $active_theme );
AMP_Options_Manager::update_option( Option::THEME_SUPPORT, AMP_Theme_Support::READER_MODE_SLUG );
AMP_Options_Manager::update_option( Option::READER_THEME, $reader_theme );
require_once ABSPATH . WPINC . '/class-wp-customize-manager.php';
global $wp_customize;
$wp_customize = new WP_Customize_Manager();
$wp_customize->start_previewing_theme();
$this->assertTrue( is_customize_preview() );
$dom = Document::fromHtml(
sprintf(
'
<html>
<head>
<style>
.selective-refresh-container {
outline: solid 1px red;
}
</style>
<style>
.my-partial {
outline: solid 1px blue;
content: "%s";
}
</style>
</head>
<body>
<div class="selective-refresh-container">
<!-- Selective refresh may render my-partial here. -->
</div>
</body>
</html>
',
str_repeat( 'a', 75001 )
)
);
$args = [
'use_document_element' => true,
];
$sanitizer = new AMP_Style_Sanitizer( $dom, $args );
$sanitizer->sanitize();
$validating_sanitizer = new AMP_Tag_And_Attribute_Sanitizer( $dom, $args );
$validating_sanitizer->sanitize();
$actual_stylesheets = array_values( array_filter( $sanitizer->get_stylesheets() ) );
$this->assertCount( 2, $actual_stylesheets );
$this->assertStringStartsWith( '.selective-refresh-container{', $actual_stylesheets[0] );
$this->assertStringStartsWith( '.my-partial{', $actual_stylesheets[1] );
$this->assertGreaterThan( 75000, strlen( implode( '', $actual_stylesheets ) ) );
}
/**
* Data for testing AMP selector conversion.
*
* @return array
*/
public function get_amp_selector_data() {
return [
'amp-date-picker-allowed-child-class-not-tree-shaken' => [
'<div><amp-date-picker id="baz" type="single" mode="overlay" layout="container" format="YYYY-MM-DD" src="/example.json" input-selector="#src-input"></amp-date-picker></div>',
'amp-date-picker .CalendarMonth_caption{border-bottom: 10px} div amp-date-picker .amp-date-picker-selecting{margin-right:10px}',
'amp-date-picker .CalendarMonth_caption{border-bottom:10px}div amp-date-picker .amp-date-picker-selecting{margin-right:10px}', // This class is an allowed child, so it shouldn't be removed.
],
'amp-date-picker-single-allowed-child-class-not-tree-shaken' => [
'<div><amp-date-picker id="baz" type="single" mode="overlay" layout="container" format="YYYY-MM-DD" src="/example.json" input-selector="#src-input"></amp-date-picker></div>',
'.DayPicker_weekHeaders {border-bottom: 10px}',
'.DayPicker_weekHeaders{border-bottom:10px}',
],
'amp-date-picker-allowed-container-child-class-not-tree-shaken' => [
'<div><amp-date-picker id="baz" type="single" mode="overlay" layout="container" format="YYYY-MM-DD" src="/example.json" input-selector="#src-input"></amp-date-picker></div>',
'amp-date-picker .amp-date-picker-calendar-container{border-bottom: 10px} div amp-date-picker .amp-date-picker-selecting{margin-right:10px}',
'amp-date-picker .amp-date-picker-calendar-container{border-bottom:10px}div amp-date-picker .amp-date-picker-selecting{margin-right:10px}',
],
'valid-class-wrapping-amp-date-picker-not-tree-shaken' => [
'<div class="foo-baz"><amp-date-picker id="baz" type="single" mode="overlay" layout="container" format="YYYY-MM-DD" src="/example.json" input-selector="#src-input"></amp-date-picker></div>',
'.foo-baz amp-date-picker .CalendarMonth_caption{border-bottom: 10px} div amp-date-picker .amp-date-picker-selecting{margin-right:10px}',
'.foo-baz amp-date-picker .CalendarMonth_caption{border-bottom:10px}div amp-date-picker .amp-date-picker-selecting{margin-right:10px}',
],
'amp-date-picker-valid-child-tree-shaken-if-component-not-in-document' => [
'<div><span>AMP Date Picker Not Present</span></div>',
'amp-date-picker .CalendarMonth_caption{border-bottom: 10px}',
'',
],
'amp-date-picker-similar-disallowed-child-class-tree-shaken' => [
'<div><amp-date-picker id="baz" type="single" mode="overlay" layout="container" format="YYYY-MM-DD" src="/example.json" input-selector="#src-input"></amp-date-picker></div>',
'amp-date-picker .CalendarFoo {border-bottom: 10px}',
'',
],
'amp-date-picker-disallowed-child-class-tree-shaken' => [
'<div><amp-date-picker id="baz" type="single" mode="overlay" layout="container" format="YYYY-MM-DD" src="/example.json" input-selector="#src-input"></amp-date-picker></div>',