Bug 1359217 part 7 - Add test for getCSSStyleRules. r?heycam
MozReview-Commit-ID: 85gaOcW7opN
new file mode 100644
--- /dev/null
+++ b/layout/inspector/tests/file_getCSSStyleRules-alternate.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<link rel="alternate stylesheet" title="x" href="getCSSStyleRules-1.css">
+<unknowntagname></unknowntagname>
new file mode 100644
--- /dev/null
+++ b/layout/inspector/tests/file_getCSSStyleRules-default.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<link rel="stylesheet" href="getCSSStyleRules-1.css">
+<unknowntagname></unknowntagname>
new file mode 100644
--- /dev/null
+++ b/layout/inspector/tests/getCSSStyleRules-1.css
@@ -0,0 +1,3 @@
+unknowntagname {
+ z-index: 1;
+}
new file mode 100644
--- /dev/null
+++ b/layout/inspector/tests/getCSSStyleRules-2.css
@@ -0,0 +1,3 @@
+unknowntagname {
+ z-index: 2;
+}
--- a/layout/inspector/tests/mochitest.ini
+++ b/layout/inspector/tests/mochitest.ini
@@ -14,16 +14,22 @@ support-files =
[test_bug609549.xhtml]
[test_bug806192.html]
[test_bug856317.html]
[test_bug877690.html]
[test_bug1006595.html]
[test_color_to_rgba.html]
[test_css_property_is_shorthand.html]
[test_css_property_is_valid.html]
+[test_getCSSStyleRules.html]
+support-files =
+ file_getCSSStyleRules-default.html
+ file_getCSSStyleRules-alternate.html
+ getCSSStyleRules-1.css
+ getCSSStyleRules-2.css
[test_getCSSPseudoElementNames.html]
[test_getRelativeRuleLine.html]
[test_get_all_style_sheets.html]
[test_is_valid_css_color.html]
[test_isinheritableproperty.html]
[test_parseStyleSheet.html]
[test_parseStyleSheetImport.html]
[test_selectormatcheselement.html]
new file mode 100644
--- /dev/null
+++ b/layout/inspector/tests/test_getCSSStyleRules.html
@@ -0,0 +1,202 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>Test for bug 1359217</title>
+ <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
+</head>
+<body>
+<iframe id="test"></iframe>
+<pre id="log">
+<script>
+/**
+ * This test checks that getCSSStyleRules returns correct style set in
+ * various cases. To avoid effects from UA sheets, most of the tests use
+ * an element with "unknowntagname".
+ */
+
+let iframe = document.getElementById("test");
+let domUtils = SpecialPowers.Cc["@mozilla.org/inspector/dom-utils;1"]
+ .getService(SpecialPowers.Ci.inIDOMUtils);
+const nsIDOMCSSStyleRule = SpecialPowers.Ci["nsIDOMCSSStyleRule"];
+
+SimpleTest.waitForExplicitFinish();
+
+function* getStyleRules(elem) {
+ let rules = domUtils.getCSSStyleRules(elem);
+ for (let i = 0; i < rules.length; i++) {
+ yield SpecialPowers.unwrap(rules.GetElementAt(i)
+ .QueryInterface(nsIDOMCSSStyleRule));
+ }
+}
+
+// This will check that value of z-index property declarations in the
+// rules from getCSSStyleRules matches the given content.
+function checkRules(doc, rulesContent, queryStr = "unknowntagname") {
+ let elem = doc.querySelector(queryStr);
+ let rules = [...getStyleRules(elem)];
+ is(rules.length, rulesContent.length, "Rule length should match");
+ if (rules.length != rulesContent.length) {
+ return;
+ }
+ for (let i = 0; i < rules.length; i++) {
+ let style = rules[i].style;
+ let expectation = rulesContent[i].toString();
+ is(style.length, 1, "Should contain only one declaration");
+ is(style.zIndex, expectation, "Should match expectation");
+ }
+}
+
+const tests = [
+ {
+ title: "Add new stylesheet",
+ async run(doc) {
+ checkRules(doc, [1]);
+ let link = doc.createElement("link");
+ link.rel = "stylesheet";
+ link.href = "getCSSStyleRules-2.css";
+ doc.head.appendChild(link);
+ // Check the rules synchronously when the stylesheet has not been
+ // loaded, there should still be no rule matches.
+ checkRules(doc, [1]);
+ await new Promise(resolve => { link.onload = resolve; });
+ checkRules(doc, [1, 2]);
+ },
+ },
+ {
+ title: "Remove stylesheet",
+ async run(doc) {
+ checkRules(doc, [1]);
+ doc.querySelector("link").remove();
+ checkRules(doc, []);
+ },
+ },
+ {
+ title: "Enable stylesheet",
+ async run(doc) {
+ // Set disabled flag before we invoke the utils.
+ let link = doc.querySelector("link");
+ link.sheet.disabled = true;
+ checkRules(doc, []);
+ link.sheet.disabled = false;
+ checkRules(doc, [1]);
+ },
+ },
+ {
+ title: "Disable stylesheet",
+ async run(doc) {
+ checkRules(doc, [1]);
+ doc.querySelector("link").sheet.disabled = true;
+ checkRules(doc, []);
+ },
+ },
+ {
+ title: "Change stylesheet set",
+ base: "alternate",
+ async run(doc) {
+ checkRules(doc, []);
+ doc.selectedStyleSheetSet = "x";
+ checkRules(doc, [1]);
+ doc.selectedStyleSheetSet = "";
+ checkRules(doc, []);
+ },
+ },
+ {
+ title: "Add and remove rules",
+ async run(doc) {
+ checkRules(doc, [1]);
+
+ let sheet = doc.querySelector("link").sheet;
+ info("Inserting style rule");
+ sheet.insertRule("unknowntagname { z-index: 3; }", 1);
+ checkRules(doc, [1, 3]);
+
+ info("Removing style rule");
+ sheet.deleteRule(0);
+ checkRules(doc, [3]);
+
+ info("Inserting media rule");
+ sheet.insertRule("@media all { unknowntagname { z-index: 4; } }", 1);
+ checkRules(doc, [3, 4]);
+
+ info("Inserting supports rule");
+ sheet.insertRule(
+ "@supports (z-index: 0) { unknowntagname { z-index: 5; } }", 1);
+ checkRules(doc, [3, 5, 4]);
+
+ info("Inserting import rule");
+ sheet.insertRule("@import url(getCSSStyleRules-2.css);", 0);
+ // There is no notification we can get when the associated style
+ // sheet gets loaded, so we have to query it.
+ while (true) {
+ try {
+ sheet.cssRules[0].styleSheet.cssRules;
+ break;
+ } catch (e) {
+ if (e.name == "InvalidAccessError") {
+ await new Promise(resolve => requestAnimationFrame(resolve));
+ } else {
+ throw e;
+ }
+ }
+ }
+ checkRules(doc, [2, 3, 5, 4]);
+
+ info("Removing supports rule");
+ sheet.deleteRule(2);
+ checkRules(doc, [2, 3, 4]);
+
+ info("Removing media rule");
+ sheet.deleteRule(2);
+ checkRules(doc, [2, 3]);
+
+ info("Removing import rule");
+ sheet.deleteRule(0);
+ checkRules(doc, [3]);
+ },
+ },
+ {
+ title: "Check UA sheets",
+ async run(doc) {
+ doc.querySelector("link").remove();
+ checkRules(doc, []);
+ let elem = doc.querySelector("unknowntagname");
+ elem.setAttribute("dir", "");
+ let seenUnicodeBidi = false;
+ for (let rule of getStyleRules(elem)) {
+ if (rule.style.unicodeBidi == "isolate") {
+ seenUnicodeBidi = true;
+ break;
+ }
+ }
+ ok(seenUnicodeBidi, "Should have unicode-bidi " +
+ "declaration from UA stylesheet html.css");
+ },
+ },
+];
+
+async function runTests() {
+ for (let i = 0; i < tests.length; i++) {
+ let test = tests[i];
+ info(`Test ${i}: ${test.title}`);
+ iframe.src = "about:blank";
+ if (!test.base) {
+ test.base = "default";
+ }
+ iframe.src = `file_getCSSStyleRules-${test.base}.html`;
+ await new Promise(resolve => { iframe.onload = resolve; });
+ try {
+ await test.run(iframe.contentDocument);
+ } catch (e) {
+ ok(false, "JavaScript error: " + e);
+ }
+ }
+ SimpleTest.finish();
+}
+
+runTests();
+
+</script>
+</pre>
+</body>
+</html>