PerformanceTests/AudioContext/audio-context-creation.html

<!DOCTYPE html>
<html>
<body>
<script src="../resources/runner.js"></script>
<script>
    function runTest() {
        let isDone = false;
        PerfTestRunner.prepareToMeasureValuesAsync({ done: () => isDone = true, unit: 'ms' });

        async function runIteration() {
            let startTime = PerfTestRunner.now();

            let audioContexts = [];
            for (let i = 0; i < 100; ++i) {
                let context = new AudioContext();
                audioContexts.push(context);
                await context.resume();
            }

            for (let context of audioContexts) {
                await context.suspend();
            }

            PerfTestRunner.measureValueAsync(PerfTestRunner.now() - startTime);

            if (!isDone) {
                if (window.GCController)
                    window.GCController.collect();

                setTimeout(runIteration, 0);
            }
        }

        runIteration();
    }
    window.addEventListener('load', event => {
        let button = document.body.appendChild(document.createElement('button'));
        button.innerText = 'Start test';
        button.addEventListener('click', () => {
            button.disabled = true;
            runTest();
        });
    })
    </script>
</body>
</html>