gecko-dev/layout/style/test/test_variables.html

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HTML

<!DOCTYPE type>
<title>Assorted CSS variable tests</title>
<script src="/MochiKit/MochiKit.js"></script>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css" type="text/css">
<style id="test1">
</style>
<style id="test2">
</style>
<style id="test3">
</style>
<style id="test4">
</style>
<div id="t4"></div>
<style id="test5">
</style>
<div id="t5"></div>
<style id="test6">
</style>
<style id="test7">
</style>
<style id="test8">
</style>
<script>
var tests = [
function() {
// https://bugzilla.mozilla.org/show_bug.cgi?id=773296#c121
var test1 = document.getElementById("test1");
test1.textContent = "p { --a:123!important; }";
var declaration = test1.sheet.cssRules[0].style;
declaration.cssText;
declaration.setProperty("color", "black");
is(declaration.getPropertyValue("--a"), "123");
},
function() {
// https://bugzilla.mozilla.org/show_bug.cgi?id=773296#c121
var test2 = document.getElementById("test2");
test2.textContent = "p { --a: a !important; }";
var declaration = test2.sheet.cssRules[0].style;
is(declaration.getPropertyPriority("--a"), "important");
},
function() {
// https://bugzilla.mozilla.org/show_bug.cgi?id=955913
var test3 = document.getElementById("test3");
test3.textContent = "p { border-left-style: inset; padding: 1px; --decoration: line-through; }";
var declaration = test3.sheet.cssRules[0].style;
is(declaration[declaration.length - 1], "--decoration");
},
function() {
// https://bugzilla.mozilla.org/show_bug.cgi?id=959973
var test4 = document.getElementById("test4");
test4.textContent = "#t4 { background-image: var(--a); }";
var element = document.getElementById("t4");
var path = window.location.pathname;
var currentDir = path.substring(0, path.lastIndexOf('/'));
var imageURL = "http://mochi.test:8888" + currentDir + "/image.png";
is(window.getComputedStyle(element).getPropertyValue("background-image"), "url(\"" + imageURL +"\")");
},
function() {
// https://bugzilla.mozilla.org/show_bug.cgi?id=1043713
var test5 = document.getElementById("test5");
test5.textContent = "#t5 { --SomeVariableName: a; }";
var declaration = test5.sheet.cssRules[0].style;
is(declaration.item(0), "--SomeVariableName", "custom property name returned by item() on style declaration");
is(declaration[0], "--SomeVariableName", "custom property name returned by indexed getter on style declaration");
var element = document.getElementById("t5");
var cs = window.getComputedStyle(element);
is(cs.item(cs.length - 1), "--SomeVariableName", "custom property name returned by item() on computed style");
is(cs[cs.length - 1], "--SomeVariableName", "custom property name returned by indexed getter on style declaration");
},
function() {
// https://bugzilla.mozilla.org/show_bug.cgi?id=969756
var test6 = document.getElementById("test6");
test6.textContent = "p { font: var(--var6) hangul mongolian; font-size-adjust: none; }";
var declaration = test6.sheet.cssRules[0].style;
test6.style.color = "white";
is(declaration.getPropertyValue("-x-system-font"), " var(--var6) hangul mongolian");
},
function() {
// https://bugzilla.mozilla.org/show_bug.cgi?id=1154356
var test7 = document.getElementById("test7");
test7.textContent = "p { --weird\\;name: green; }";
is(test7.sheet.cssRules[0].style.cssText, "--weird\\;name: green;");
test7.textContent = "p { --0: green; }";
is(test7.sheet.cssRules[0].style.cssText, "--0: green;");
},
function() {
// https://bugzilla.mozilla.org/show_bug.cgi?id=1330172
var test8 = document.getElementById("test8");
test8.textContent = "p { --a:inHerit; }";
is(test8.sheet.cssRules[0].style.cssText, "--a: inherit;");
test8.textContent = "p { --b: initial!important; }";
is(test8.sheet.cssRules[0].style.cssText, "--b: initial !important;");
test8.textContent = "p { --c: UNSET !important }";
is(test8.sheet.cssRules[0].style.cssText, "--c: unset !important;");
},
];
function prepareTest() {
// Load an external style sheet for test 4.
var e = document.createElement("link");
e.addEventListener("load", runTest);
e.setAttribute("rel", "stylesheet");
e.setAttribute("href", "support/external-variable-url.css");
document.head.appendChild(e);
}
function runTest() {
tests.forEach(function(fn) { fn(); });
SimpleTest.finish();
}
SimpleTest.waitForExplicitFinish();
SpecialPowers.pushPrefEnv({ set: [["layout.css.variables.enabled", true ]] },
prepareTest);
</script>