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const HTML_DATA = `
<!DOCTYPE HTML>
<html>
<head>
<title>Dummy test page</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"></meta>
</head>
<body>
<p>Dummy test page</p>
<div id="testDiv">test</div>
<img src="data:image/png;base64, iVBORw0KGgoAAAANSUhEUgAAAAUA
AAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO
9TXL0Y4OHwAAAABJRU5ErkJggg==" alt="Red dot" />
</body>
</html>
`;
const WORKER = `
self.onmessage = function(e) {
if (e.data.type == "runCmdAndGetResult") {
let result = eval(e.data.cmd);
postMessage({ type: "result", resultOf: e.data.cmd, result: result });
return;
} else if (e.data.type == "runCmds") {
for (let cmd of e.data.cmds) {
eval(cmd);
}
postMessage({ type: "result", resultOf: "entriesLength", result: performance.getEntries().length });
return;
} else if (e.data.type == "getResult") {
if (e.data.resultOf == "startTimeAndDuration") {
postMessage({ type: "result",
resultOf: "startTimeAndDuration",
result: {
index: e.data.num,
startTime: performance.getEntries()[e.data.num].startTime,
duration: performance.getEntries()[e.data.num].duration,
}
});
return;
} else if (e.data.resultOf == "getEntriesByTypeLength") {
postMessage({
type: "result",
resultOf: "entriesByTypeLength",
result: {
markLength: performance.getEntriesByType("mark").length,
resourceLength: performance.getEntriesByType("resource").length,
testAndMarkLength: performance.getEntriesByName("Test", "mark").length,
}
});
return;
}
}
postMessage({ type: "unexpectedMessageType", data: e.data.type });
};
`;
function handleRequest(request, response) {
let query = new URLSearchParams(request.queryString);
if (query.get("crossOriginIsolated") === "true") {
response.setHeader("Cross-Origin-Opener-Policy", "same-origin", false);
response.setHeader("Cross-Origin-Embedder-Policy", "require-corp", false);
}
if (query.get("worker")) {
response.setHeader("Cache-Control", "no-cache", false);
response.setHeader("Content-Type", "application/javascript");
response.write(WORKER);
return;
}
response.setHeader("Cache-Control", "no-cache", false);
response.setHeader("Content-Type", "text/html", false);
response.write(HTML_DATA);
}