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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 14:29:10 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 14:29:10 +0000
commit2aa4a82499d4becd2284cdb482213d541b8804dd (patch)
treeb80bf8bf13c3766139fbacc530efd0dd9d54394c /layout/style/test/test_load_events_on_stylesheets.html
parentInitial commit. (diff)
downloadfirefox-2aa4a82499d4becd2284cdb482213d541b8804dd.tar.xz
firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.zip
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=185236
+-->
+<head>
+ <title>Test for Bug 185236</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+ <script>
+ var pendingEventCounter = 0;
+ var messagePosted = false;
+ SimpleTest.waitForExplicitFinish();
+ addLoadEvent(function() {
+ is(messagePosted, true, "Should have gotten onmessage event");
+ is(pendingEventCounter, 0,
+ "How did onload for the page fire before onload for all the stylesheets?");
+ SimpleTest.finish();
+ });
+ // Count the link we're about to parse
+ pendingEventCounter = 1;
+ </script>
+ <link rel="stylesheet" href="data:text/css,*{}"
+ onload="--pendingEventCounter;
+ ok(true, 'Load event firing on basic stylesheet')"
+ onerror="--pendingEventCounter;
+ ok(false, 'Error event firing on basic stylesheet')">
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=185236">Mozilla Bug 185236</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script type="application/javascript">
+/** Test for Bug 185236 **/
+// Verify that there are no in-flight sheet loads right now; we should have
+// waited for them when we hit the script tag
+is(pendingEventCounter, 0, "There should be no pending events");
+
+// Test sheet that will already be complete when we write it out
+++pendingEventCounter;
+
+// Make sure that a postMessage we do right now fires after the onload handler
+// for the stylesheet. If we ever change the timing of sheet onload, we will
+// need to change that.
+window.onmessage = function() {
+ messagePosted = true;
+ // There are 6 pending events: two from the two direct example.com loads,
+ // and 4 from the two data:text/css loads that import things
+ is(pendingEventCounter, 6, "Load event for sheet should have fired");
+}
+window.postMessage("", "*");
+
+function checkSheetComplete(sheet, length) {
+ try {
+ is(sheet.cssRules.length, length, `Should be loaded with ${length} rule(s)`);
+ } catch (e) {
+ ok(false, "Sheet has not been loaded completely");
+ }
+}
+
+document.write('<link rel="stylesheet" href="data:text/css,*{}"\
+ onload="--pendingEventCounter;\
+ ok(true, \'Load event firing on basic stylesheet\')"\
+ onerror="--pendingEventCounter;\
+ ok(false, \'Error event firing on basic stylesheet\')">');
+
+// Make sure we have that second stylesheet
+is(document.styleSheets.length, 3, "Should have three stylesheets");
+
+// Make sure that the second stylesheet is all loaded
+// If we ever switch away from sync loading of already-complete sheets, this
+// test will need adjusting
+checkSheetComplete(document.styleSheets[2], 1);
+
+// Make sure the load event for that stylesheet has not fired yet
+is(pendingEventCounter, 1, "There should be one pending event");
+
+++pendingEventCounter;
+document.write('<style\
+ onload="--pendingEventCounter;\
+ ok(true, \'Load event firing on inline stylesheet\')"\
+ onerror="--pendingEventCounter;\
+ ok(false, \'Error event firing on inline stylesheet\')"></style>');
+
+// Make sure the load event for that second stylesheet has not fired yet
+is(pendingEventCounter, 2, "There should be two pending events");
+
+++pendingEventCounter;
+document.write('<link rel="stylesheet" href="http://www.example.com"\
+ onload="--pendingEventCounter;\
+ ok(false, \'Load event firing on broken stylesheet 1\')"\
+ onerror="--pendingEventCounter;\
+ ok(true, \'Error event firing on broken stylesheet 1\')">');
+
+++pendingEventCounter;
+var link = document.createElement("link");
+link.rel = "stylesheet";
+link.href = "http://www.example.com";
+link.onload = function() { --pendingEventCounter;
+ ok(false, 'Load event firing on broken stylesheet 2');
+};
+link.onerror = function() { --pendingEventCounter;
+ ok(true, 'Error event firing on broken stylesheet 2');
+}
+document.body.appendChild(link);
+
+++pendingEventCounter;
+link = document.createElement("link");
+link.rel = "stylesheet";
+link.href = "data:text/css,*{}";
+link.onload = function() { --pendingEventCounter;
+ ok(true, 'Load event firing on external stylesheet');
+};
+link.onerror = function() { --pendingEventCounter;
+ ok(false, 'Error event firing on external stylesheet');
+}
+document.body.appendChild(link);
+
+// If we ever switch away from sync loading of already-complete sheets, this
+// test will need adjusting
+checkSheetComplete(link.sheet, 1);
+
+++pendingEventCounter;
+link = document.createElement("link");
+link.rel = "stylesheet";
+link.href = "data:text/css,@import url('data:text/css,*{}')";
+link.onload = function() { --pendingEventCounter;
+ ok(true, 'Load event firing on external stylesheet');
+};
+link.onerror = function() { --pendingEventCounter;
+ ok(false, 'Error event firing on external stylesheet');
+}
+document.body.appendChild(link);
+
+++pendingEventCounter;
+link = document.createElement("link");
+link.rel = "stylesheet";
+link.href = "data:text/css,@import url('http://www.example.com')";
+link.onload = function() { --pendingEventCounter;
+ ok(false, 'Load event firing on broken stylesheet 3');
+};
+link.onerror = function() { --pendingEventCounter;
+ ok(true, 'Error event firing on broken stylesheet 3');
+}
+document.body.appendChild(link);
+
+function absoluteURL(relativeURL) {
+ return new URL(relativeURL, location.href).href;
+}
+
+++pendingEventCounter;
+link = document.createElement("link");
+link.rel = "stylesheet";
+link.href = `data:text/css,@import url('http://www.example.com'); @import url(${absoluteURL('slow_ok_sheet.sjs')});`;
+link.onload = function() { --pendingEventCounter;
+ ok(false, 'Load event firing on broken stylesheet 4');
+};
+link.onerror = function() { --pendingEventCounter;
+ ok(true, 'Error event firing on broken stylesheet 4');
+}
+document.body.appendChild(link);
+
+++pendingEventCounter;
+link = document.createElement("link");
+link.rel = "stylesheet";
+link.href = `data:text/css,@import url(${absoluteURL('slow_broken_sheet.sjs')}); @import url('data:text/css,');`;
+link.onload = function() { --pendingEventCounter;
+ ok(false, 'Load event firing on broken stylesheet 5');
+};
+link.onerror = function() { --pendingEventCounter;
+ ok(true, 'Error event firing on broken stylesheet 5');
+}
+document.body.appendChild(link);
+
+// Make sure the load events for all those stylesheets have not fired yet
+is(pendingEventCounter, 9, "There should be nine pending events");
+
+</script>
+</pre>
+</body>
+</html>
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