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<!DOCTYPE HTML>
<html>
<!--
Test that css-logic calculates CSS specificity properly
-->
<head>
<meta charset="utf-8">
<title>Test css-logic specificity</title>
<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
</head>
<body style="background:blue;">
<script type="application/javascript;version=1.8">
window.onload = function() {
var {utils: Cu, classes: Cc, interfaces: Ci} = Components;
const {require} = Cu.import("resource://devtools/shared/Loader.jsm", {});
const {CssLogic, CssSelector} = require("devtools/server/css-logic");
const DOMUtils = Cc["@mozilla.org/inspector/dom-utils;1"]
.getService(Ci.inIDOMUtils);
const TEST_DATA = [
{text: "*", expected: 0},
{text: "LI", expected: 1},
{text: "UL LI", expected: 2},
{text: "UL OL + LI", expected: 3},
{text: "H1 + [REL=\"up\"]", expected: 257},
{text: "UL OL LI.red", expected: 259},
{text: "LI.red.level", expected: 513},
{text: ".red .level", expected: 512},
{text: "#x34y", expected: 65536},
{text: "#s12:not(FOO)", expected: 65537},
{text: "body#home div#warning p.message", expected: 131331},
{text: "* body#home div#warning p.message", expected: 131331},
{text: "#footer :not(nav) li", expected: 65538},
{text: "bar:nth-child(n)", expected: 257},
{text: "li::-moz-list-number", expected: 1},
{text: "a:hover", expected: 257}
];
function createDocument() {
let text = TEST_DATA.map(i=>i.text).join(",");
text = '<style type="text/css">' + text + " {color:red;}</style>";
document.body.innerHTML = text;
}
function getExpectedSpecificity(selectorText) {
return TEST_DATA.filter(i => i.text === selectorText)[0].expected;
}
SimpleTest.waitForExplicitFinish();
createDocument();
let cssLogic = new CssLogic(DOMUtils.isInheritedProperty);
cssLogic.highlight(document.body);
let cssSheet = cssLogic.sheets[0];
let cssRule = cssSheet.domSheet.cssRules[0];
let selectors = CssLogic.getSelectors(cssRule);
info("Iterating over the test selectors")
for (let i = 0; i < selectors.length; i++) {
let selectorText = selectors[i];
info("Testing selector " + selectorText);
let selector = new CssSelector(cssRule, selectorText, i);
let expected = getExpectedSpecificity(selectorText);
let specificity = DOMUtils.getSpecificity(selector.cssRule,
selector.selectorIndex)
is(specificity, expected,
'Selector "' + selectorText + '" has a specificity of ' + expected);
}
info("Testing specificity of element.style");
let colorProp = cssLogic.getPropertyInfo("background");
is(colorProp.matchedSelectors[0].specificity, 0x01000000,
"Element styles have specificity of 0x01000000 (16777216).");
SimpleTest.finish();
}
</script>
</body>
</html>
|
