static/index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Harmonic Balancer Test Frontend</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
    <style>
        body {
            padding-top: 20px;
        }
        .result {
            margin-top: 20px;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1 class="text-center">Harmonic Balancer Test Frontend</h1>
        <div class="row">
            <div class="col-md-12">
                <button id="runTests" class="btn btn-primary btn-block">Run All Tests</button>
            </div>
        </div>
        <div class="row result">
            <div class="col-md-12">
                <h3>Test Results</h3>
                <pre id="testResults" class="bg-light p-3"></pre>
            </div>
        </div>
    </div>

    <script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
    <script>
        $(document).ready(function() {
            $('#runTests').click(function() {
                $('#testResults').text('Running tests...');
                $.ajax({
                    url: '/run_tests',
                    method: 'GET',
                    success: function(data) {
                        $('#testResults').text(data);
                    },
                    error: function() {
                        $('#testResults').text('Error running tests.');
                    }
                });
            });
        });
    </script>
</body>
</html>