<!doctype html> <title>replace / replaceSync on non-constructed stylesheet</title> <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> <link rel="help" href="https://wicg.github.io/construct-stylesheets/"> <script src = '/resources/testharness.js'></script> <script src = '/resources/testharnessreport.js'></script> <style id="style"> @import url("support/constructable-import.css"); :root { background-color: lime } </style> <script> promise_test(async () => { await new Promise(resolve => window.addEventListener("load", resolve)); assert_equals(getComputedStyle(document.documentElement).backgroundColor, "rgb(0, 255, 0)", "precondition") let sheet = document.styleSheets[0]; let childSheet = sheet.cssRules[0].styleSheet; assert_throws_dom("NotAllowedError", () => sheet.replaceSync(":root { background-color: red }"), "replaceSync on non-constructed sheet should throw"); assert_throws_dom("NotAllowedError", () => childSheet.replaceSync(":root { background-color: red }"), "replaceSync on non-constructed sheet should throw"); assert_equals(getComputedStyle(document.documentElement).backgroundColor, "rgb(0, 255, 0)", "old sheet should still apply after replace"); }, "CSSStyleSheet.replaceSync throws NotAllowedError for non-constructed sheets") promise_test(async function(t) { assert_equals(getComputedStyle(document.documentElement).backgroundColor, "rgb(0, 255, 0)", "precondition") let sheet = document.styleSheets[0]; let childSheet = sheet.cssRules[0].styleSheet; await promise_rejects_dom(t, "NotAllowedError", sheet.replace(":root { background-color: red }"), "replace on non-constructed sheet should return a rejected promise"); await promise_rejects_dom(t, "NotAllowedError", childSheet.replace(":root { background-color: red }"), "replace on non-constructed sheet should return a rejected promise"); assert_equals(getComputedStyle(document.documentElement).backgroundColor, "rgb(0, 255, 0)", "old sheet should still apply after replace"); }, "CSSStyleSheet.replace returns a rejected promise for non-constructed sheets") promise_test(async function(t) { assert_equals(getComputedStyle(document.documentElement).backgroundColor, "rgb(0, 255, 0)", "precondition") let sheet = document.styleSheets[0]; let childSheet = sheet.cssRules[0].styleSheet; style.remove() // sheet's associated document becomes null. await promise_rejects_dom(t, "NotAllowedError", sheet.replace(":root { background-color: red }"), "replace on non-constructed sheet should return a rejected promise"); await promise_rejects_dom(t, "NotAllowedError", childSheet.replace(":root { background-color: red }"), "replace on non-constructed sheet should return a rejected promise"); assert_equals(getComputedStyle(document.documentElement).backgroundColor, "rgba(0, 0, 0, 0)", "old sheet was removed, so the default color should apply"); }, "CSSStyleSheet.replace returns a rejected promise for non-constructed sheets that have no associated document") </script>