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Tests: Import a couple of CSS nesting tests from WPT
This is partly to check that importing ref tests works, and that I didn't break the text-test import.
This commit is contained in:
Sam Atkins
Tim Ledbetter
parent
7a5b38d577
commit
f5d67cefc1
Notes:
github-actions[bot]
2024-11-05 17:59:20 +00:00
Author: https://github.com/AtkinsSJ
Commit: f5d67cefc1
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2179
Reviewed-by: https://github.com/tcl3 ✅
4 changed files with 353 additions and 0 deletions
188
Tests/LibWeb/Text/input/wpt-import/css/css-nesting/cssom.html
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188
Tests/LibWeb/Text/input/wpt-import/css/css-nesting/cssom.html
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<!doctype html>
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<title>Simple CSSOM manipulation of subrules</title>
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<link rel="author" title="Steinar H. Gunderson" href="mailto:sesse@chromium.org">
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<link rel="help" href="https://drafts.csswg.org/css-nesting-1/">
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<script src="../../resources/testharness.js"></script>
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<script src="../../resources/testharnessreport.js"></script>
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<style id="ss"></style>
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<script>
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test(() => {
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assert_equals(CSSStyleRule.__proto__, CSSGroupingRule);
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}, "CSSStyleRule is a CSSGroupingRule");
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test(() => {
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let [ss] = document.styleSheets;
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assert_equals(ss.cssRules.length, 0);
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ss.insertRule('.a { color: red; }');
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assert_equals(ss.cssRules.length, 1);
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assert_equals(ss.cssRules[0].cssText, '.a { color: red; }');
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// Test inserting sub-cssRules, at various positions.
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ss.cssRules[0].insertRule('& .b { color: green; }');
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ss.cssRules[0].insertRule('& .c { color: blue; }', 1);
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ss.cssRules[0].insertRule('& .d { color: hotpink; }', 1);
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assert_equals(ss.cssRules[0].cssText,
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`.a {
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color: red;
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& .b { color: green; }
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& .d { color: hotpink; }
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& .c { color: blue; }
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}`, 'inserting should work');
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// Test deleting a rule.
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ss.cssRules[0].deleteRule(1);
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assert_equals(ss.cssRules[0].cssText,
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`.a {
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color: red;
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& .b { color: green; }
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& .c { color: blue; }
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}`, 'deleting should work');
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});
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// Test that out-of-bounds throws exceptions and does not affect the stylesheet.
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const sampleSheetText =
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`.a {
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color: red;
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& .b { color: green; }
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& .c { color: blue; }
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}`;
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test(() => {
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document.getElementById('ss').innerHTML = sampleSheetText;
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let [ss] = document.styleSheets;
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assert_throws_dom('IndexSizeError', () => { ss.cssRules[0].insertRule('& .broken {}', 3); });
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assert_equals(ss.cssRules[0].cssText, sampleSheetText, 'unchanged after no-insert');
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});
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test(() => {
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document.getElementById('ss').innerHTML = sampleSheetText;
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let [ss] = document.styleSheets;
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assert_throws_dom('IndexSizeError', () => { ss.cssRules[0].insertRule('& .broken {}', -1); });
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assert_equals(ss.cssRules[0].cssText, sampleSheetText, 'unchanged after no-insert');
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});
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test(() => {
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document.getElementById('ss').innerHTML = sampleSheetText;
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let [ss] = document.styleSheets;
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assert_throws_dom('IndexSizeError', () => { ss.cssRules[0].deleteRule(5); });
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assert_equals(ss.cssRules[0].cssText, sampleSheetText, 'unchanged after no-delete');
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});
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test(() => {
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document.getElementById('ss').innerHTML = sampleSheetText;
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let [ss] = document.styleSheets;
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assert_equals(ss.cssRules[0].cssRules[2], undefined, 'subscript out-of-bounds returns undefined');
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assert_equals(ss.cssRules[0].cssRules.item(2), null, 'item() out-of-bounds returns null');
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assert_equals(ss.cssRules[0].cssText, sampleSheetText, 'unchanged after no-access');
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});
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// Test that inserting an invalid rule throws an exception.
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test(() => {
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document.getElementById('ss').innerHTML = sampleSheetText;
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let [ss] = document.styleSheets;
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let exception;
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assert_throws_dom('SyntaxError', () => { ss.cssRules[0].insertRule('% {}'); });
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assert_equals(ss.cssRules[0].cssText, sampleSheetText, 'unchanged after invalid rule');
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});
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// Test that we can get out single rule through .cssRules.
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test(() => {
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document.getElementById('ss').innerHTML = sampleSheetText;
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let [ss] = document.styleSheets;
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assert_equals(ss.cssRules[0].cssRules[1].cssText, '& .c { color: blue; }');
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});
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// Test that we can insert a @supports rule, that it serializes in the right place
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// and has the right parent. Note that the indentation is broken per-spec.
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test(() => {
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document.getElementById('ss').innerHTML = sampleSheetText;
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let [ss] = document.styleSheets;
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ss.cssRules[0].insertRule('@supports selector(&) { & div { font-size: 10px; }}', 1);
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assert_equals(ss.cssRules[0].cssText,
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`.a {
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color: red;
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& .b { color: green; }
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@supports selector(&) {
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& div { font-size: 10px; }
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}
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& .c { color: blue; }
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}`, '@supports is added');
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assert_equals(ss.cssRules[0].cssRules[1].parentRule, ss.cssRules[0]);
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ss.cssRules[0].deleteRule(1);
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assert_equals(ss.cssRules[0].cssText, sampleSheetText);
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});
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// Nested rules are not part of declaration lists, and thus should not
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// be possible to insert with .style.
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test(() => {
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document.getElementById('ss').innerHTML = sampleSheetText;
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let [ss] = document.styleSheets;
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ss.cssRules[0].style = 'color: olivedrab; &.d { color: peru; }';
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assert_equals(ss.cssRules[0].cssText,
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`.a {
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color: olivedrab;
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& .b { color: green; }
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& .c { color: blue; }
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}`, 'color is changed, new rule is ignored');
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});
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test(() => {
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document.getElementById('ss').innerHTML = sampleSheetText;
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let [ss] = document.styleSheets;
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ss.cssRules[0].cssRules[0].selectorText = 'div.b .c &'; // Allowed
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ss.cssRules[0].cssRules[1].selectorText = '.c div.b &, div &'; // Allowed.
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ss.cssRules[0].insertRule('div & {}'); // Allowed.
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assert_equals(ss.cssRules[0].cssText,
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`.a {
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color: red;
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div & { }
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div.b .c & { color: green; }
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.c div.b &, div & { color: blue; }
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}`, 'selectorText and insertRule');
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});
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// Rules that are dropped in forgiving parsing but that contain &,
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// must still be serialized out as they were.
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test(() => {
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const text = '.a { :is(!& .foo, .b) { color: green; } }';
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document.getElementById('ss').innerHTML = text;
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let [ss] = document.styleSheets;
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assert_equals(ss.cssRules[0].cssText,
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`.a {
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:is(!& .foo, .b) { color: green; }
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}`, 'invalid rule containing ampersand is kept in serialization');
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});
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test((t) => {
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let main = document.createElement('main');
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main.innerHTML = `
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<style>
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.a {
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& { z-index:1; }
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& #inner1 { z-index:1; }
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.stuff, :is(&) #inner2 { z-index:1; }
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}
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</style>
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<div id="outer" class="b">
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<div id="inner1"></div>
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<div id="inner2"></div>
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</div>
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`;
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document.documentElement.append(main);
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t.add_cleanup(() => main.remove());
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assert_equals(getComputedStyle(outer).zIndex, 'auto');
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assert_equals(getComputedStyle(inner1).zIndex, 'auto');
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assert_equals(getComputedStyle(inner2).zIndex, 'auto');
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// .a => .b
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main.firstElementChild.sheet.cssRules[0].selectorText = '.b';
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assert_equals(getComputedStyle(outer).zIndex, '1');
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assert_equals(getComputedStyle(inner1).zIndex, '1');
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assert_equals(getComputedStyle(inner2).zIndex, '1');
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}, 'Mutating the selectorText of outer rule invalidates inner rules');
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</script>
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