| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>View transitions: CSSOM for @view-transition rule</title> |
| <link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/"> |
| <link rel="author" href="mailto:bokan@chromium.org"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style></style> |
| <script> |
| function resetStateAndTest(testFunction) { |
| const sheet = document.styleSheets[0]; |
| while (sheet.cssRules.length > 0) sheet.deleteRule(0); |
| testFunction(); |
| } |
| |
| test(function () { |
| resetStateAndTest(() => { |
| document.styleSheets[0].insertRule(` |
| @view-transition { |
| } |
| `); |
| let rule = document.styleSheets[0].cssRules[0]; |
| assert_true(rule instanceof CSSViewTransitionRule); |
| assert_equals(rule.type, 0); |
| assert_equals(rule.cssText, "@view-transition { }"); |
| assert_equals(rule.navigation, ''); |
| |
| }); |
| }, "CSSViewTransitionRule is correctly parsed and accessible via CSSOM."); |
| |
| test(function () { |
| resetStateAndTest(() => { |
| document.styleSheets[0].insertRule(` |
| @view-transition { |
| navigation: auto; |
| } |
| `); |
| let rule = document.styleSheets[0].cssRules[0]; |
| assert_equals(rule.cssText, |
| "@view-transition { navigation: auto; }"); |
| assert_equals(rule.navigation, 'auto'); |
| |
| }); |
| }, "`navigation: auto` is correctly parsed."); |
| |
| test(function () { |
| resetStateAndTest(() => { |
| document.styleSheets[0].insertRule(` |
| @view-transition { |
| navigation: none; |
| } |
| `); |
| let rule = document.styleSheets[0].cssRules[0]; |
| assert_equals(rule.cssText, "@view-transition { navigation: none; }"); |
| assert_equals(rule.navigation, 'none'); |
| }); |
| }, "`navigation: none` is correctly parsed."); |
| |
| test(function () { |
| resetStateAndTest(() => { |
| assert_throws_dom('SyntaxError', () => { |
| document.styleSheets[0].insertRule('@view-transition foo {}'); |
| }, "Failed to execute 'insertRule' on 'CSSStyleSheet': " + |
| "Failed to parse the rule '@view-transition foo {}'"); |
| assert_equals(document.styleSheets[0].cssRules.length, 0); |
| }); |
| }, "@view-transition fails parsing with a preamble"); |
| |
| test(function () { |
| resetStateAndTest(() => { |
| document.styleSheets[0].insertRule(` |
| @view-transition { |
| navigation: foo; |
| } |
| `); |
| let rule = document.styleSheets[0].cssRules[0]; |
| assert_equals(rule.cssText, "@view-transition { }"); |
| }); |
| }, "Invalid `navigation` value fails to parse."); |
| |
| test(function () { |
| resetStateAndTest(() => { |
| document.styleSheets[0].insertRule(` |
| @view-transition { |
| navigation: none !important; |
| } |
| `); |
| let rule = document.styleSheets[0].cssRules[0]; |
| assert_equals(rule.cssText, "@view-transition { }"); |
| }); |
| }, "`navigation` with !important flag should fail to parse."); |
| |
| test(function () { |
| resetStateAndTest(() => { |
| document.styleSheets[0].insertRule(` |
| @view-transition { |
| navigation: none; |
| } |
| `); |
| let rule = document.styleSheets[0].cssRules[0]; |
| rule.navigation = "auto"; |
| assert_equals(rule.navigation, "none"); |
| }); |
| }, "`navigation` descriptor cannot be set."); |
| |
| </script> |
