gecko/browser/devtools/styleinspector/test/browser_bug_592743_specificity.js

104 lines
2.9 KiB
JavaScript

/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Tests that CSS specificity is properly calculated.
let tempScope = {};
Cu.import("resource:///modules/devtools/CssLogic.jsm", tempScope);
const DOMUtils = Cc["@mozilla.org/inspector/dom-utils;1"]
.getService(Ci.inIDOMUtils);
let CssLogic = tempScope.CssLogic;
let CssSelector = tempScope.CssSelector;
function createDocument()
{
let doc = content.document;
doc.body.innerHTML = getStylesheetText();
doc.title = "Computed view specificity test";
runTests(doc);
}
function runTests(doc) {
let cssLogic = new CssLogic();
cssLogic.highlight(doc.body);
let tests = getTests();
let cssSheet = cssLogic.sheets[0];
let cssRule = cssSheet.domSheet.cssRules[0];
let selectors = CssLogic.getSelectors(cssRule);
for (let i = 0; i < selectors.length; i++) {
let selectorText = selectors[i];
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);
}
finishUp();
}
function getExpectedSpecificity(selectorText) {
let tests = getTests();
for (let test of tests) {
if (test.text == selectorText) {
return test.expected;
}
}
}
function getTests() {
return [
{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 getStylesheetText() {
let tests = getTests();
let text = "";
tests.forEach(function(test) {
if (text.length > 0) {
text += ",";
}
text += test.text;
});
return '<style type="text/css">' + text + " {color:red;}</style>";
}
function finishUp()
{
CssLogic = CssSelector = tempScope = null;
finish();
}
function test()
{
waitForExplicitFinish();
gBrowser.selectedTab = gBrowser.addTab();
gBrowser.selectedBrowser.addEventListener("load", function onLoad(evt) {
gBrowser.selectedBrowser.removeEventListener(evt.type, onLoad, true);
waitForFocus(createDocument, content);
}, true);
content.location = "data:text/html,Computed view specificity test";
}