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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=775852
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 775852</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=775852">Mozilla Bug 775852</a>
<p id="display"></p>
<iframe id="content" style="display: none">
</iframe>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 775852 **/
function doTest() {
let win = document.getElementById("content").contentWindow;
let doc = win.document;
doc.body.innerHTML = `<canvas width="1" height="1" id="c"></canvas>`;
let gl = doc.getElementById("c").getContext("experimental-webgl");
if (!gl) {
// No WebGL support on MacOS 10.5. Just skip this test
todo(false, "WebGL not supported");
return;
}
var setterCalled = false;
var extLength = gl.getSupportedExtensions().length;
ok(extLength > 0,
"This test won't work right if we have no supported extensions");
win.Object.defineProperty(win.Array.prototype, "0",
{
set() {
setterCalled = true;
},
});
// Test that our property got defined correctly
let arr = new win.Array();
arr[0] = 5;
is(setterCalled, true, "Setter should be called when setting prop on array");
setterCalled = false;
is(gl.getSupportedExtensions().length, extLength,
"We should still have the same number of extensions");
is(setterCalled, false,
"Setter should not be called when getting supported extensions");
}
doTest();
</script>
</pre>
</body>
</html>
|
