ladybird/Tests/LibWeb/Text/input/HTML/WindowOrWorkerGlobalScope-reportError.html

<script src="../include.js"></script>
<script>
    test(() => {
        removeTestErrorHandler()

        window.onerror = (message, filename, lineno, colno, error) => {
            println(`message = ${message}`);
            println(`lineno = ${lineno}`);
            println(`colno = ${colno}`);
            println(`error = ${error}`);
            // We can't simply print the filename because it is the full path to the active script, which varies between machines.
            const filenameURL = new URL(filename);
            println(`filename URL scheme = ${filenameURL.protocol}`);
            println(`filename URL final path segment = ${filenameURL.pathname.split('/').pop()}`);
            return true;
        };

        window.reportError(new Error('Reporting an Error!'));
    });
</script>