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<!DOCTYPE HTML>
<html>
<head>
<title>WebExtension test</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/ExtensionTestUtils.js"></script>
<script type="text/javascript" src="head.js"></script>
<script type="text/javascript" src="head_cookies.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<script type="text/javascript">
"use strict";
add_task(async function setup() {
await SpecialPowers.pushPrefEnv({
set: [["privacy.resistFingerprinting", true]],
});
});
add_task(async function test_contentscript() {
function contentScript() {
let canvas = document.createElement("canvas");
canvas.width = canvas.height = "100";
let ctx = canvas.getContext("2d");
ctx.fillStyle = "green";
ctx.fillRect(0, 0, 100, 100);
let data = ctx.getImageData(0, 0, 100, 100);
browser.test.sendMessage("data-color", data.data[1]);
}
let extensionData = {
manifest: {
content_scripts: [
{
"matches": ["http://mochi.test/*/file_sample.html"],
"js": ["content_script.js"],
"run_at": "document_start",
},
],
},
files: {
"content_script.js": contentScript,
},
};
const url = "http://mochi.test:8888/chrome/toolkit/components/extensions/test/mochitest/file_sample.html";
let extension = ExtensionTestUtils.loadExtension(extensionData);
await extension.startup();
let win = window.open(url);
let color = await extension.awaitMessage("data-color");
is(color, 128, "Got correct pixel data for green");
win.close();
await extension.unload();
});
</script>
</body>
</html>
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