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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
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layout/inspector/tests/test_parseStyleSheetImport.html Normal file
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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1202095
-->
<head>
<title>Test for Bug 1202095</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<style>
@import url('bug1202095.css');
@import url('bug1202095-2.css');
</style>
</head>
<body>
<script type="application/javascript">
var domUtils = SpecialPowers.Cc["@mozilla.org/inspector/dom-utils;1"]
.getService(SpecialPowers.Ci.inIDOMUtils);
function do_test() {
var sheet = document.styleSheets[1];
var importRule = sheet.cssRules[0];
is(importRule.type, SpecialPowers.Ci.nsIDOMCSSRule.IMPORT_RULE,
"initial sheet has @import rule");
var importedSheet = importRule.styleSheet;
importedSheet.deleteRule(0);
is(importedSheet.cssRules.length, 0, "imported sheet now has no rules");
// "suffixed" refers to the "-2".
var suffixedSheet = sheet.cssRules[1].styleSheet;
domUtils.parseStyleSheet(suffixedSheet, "");
is(suffixedSheet.cssRules.length, 0, "second imported sheet now has no rules");
// Re-parse the style sheet, preserving the imports.
domUtils.parseStyleSheet(sheet, "@import url('bug1202095.css');" +
"@import url('bug1202095-2.css');");
is(sheet.cssRules[0].type, SpecialPowers.Ci.nsIDOMCSSRule.IMPORT_RULE,
"re-parsed sheet has @import rule");
is(sheet.cssRules[0].styleSheet, importedSheet,
"imported sheet has not changed");
is(sheet.cssRules[1].styleSheet, suffixedSheet,
"second imported sheet has not changed");
// Re-parse the style sheet, preserving both imports, but changing
// the order.
domUtils.parseStyleSheet(sheet, "@import url('bug1202095-2.css');" +
"@import url('bug1202095.css');");
is(sheet.cssRules[0].styleSheet, suffixedSheet,
"reordering preserved suffixed style sheet");
is(sheet.cssRules[1].styleSheet, importedSheet,
"reordering preserved unsuffixed style sheet");
// Re-parse the style sheet, removing the imports.
domUtils.parseStyleSheet(sheet, "");
is(sheet.cssRules.length, 0, "style sheet now has no rules");
// Re-parse the style sheet, adding one import back. This should
// not allow reuse.
domUtils.parseStyleSheet(sheet, "@import url('bug1202095.css');");
is(sheet.cssRules[0].type, SpecialPowers.Ci.nsIDOMCSSRule.IMPORT_RULE,
"re-re-re-parsed sheet has @import rule");
isnot(sheet.cssRules[0].styleSheet, importedSheet,
"imported sheet has changed now");
// Re-parse the style sheet, importing the same URL twice.
// The style sheet should be reused once, but not two times.
importedSheet = sheet.cssRules[0].styleSheet;
domUtils.parseStyleSheet(sheet, "@import url('bug1202095.css');" +
"@import url('bug1202095.css');");
is(sheet.cssRules[0].styleSheet, importedSheet,
"first imported sheet is reused");
isnot(sheet.cssRules[1].styleSheet, importedSheet,
"second imported sheet is reused");
SimpleTest.finish();
}
SimpleTest.waitForExplicitFinish();
addLoadEvent(do_test);
</script>
</body>
</html>