Function main

test/parallel/test-performance-resourcetimingbufferfull.js:35–135

()

const cacheMode = '';

async function main() {
  performance.setResourceTimingBufferSize(1);
  const args = [
    requestedUrl,
    initiatorType,
    globalThis,
    cacheMode,
    {}, // body info
    200,
    '',
  ];
  performance.markResourceTiming(createTimingInfo(1), ...args);
  // Trigger a resourcetimingbufferfull event.
  performance.markResourceTiming(createTimingInfo(2), ...args);
  performance.markResourceTiming(createTimingInfo(3), ...args);
  assert.strictEqual(performance.getEntriesByType('resource').length, 1);

  // Clear resource timings on resourcetimingbufferfull event.
  await new Promise((resolve) => {
    const listener = common.mustCall((event) => {
      assert.strictEqual(event.type, 'resourcetimingbufferfull');
      performance.removeEventListener('resourcetimingbufferfull', listener);

      performance.clearResourceTimings();
      assert.strictEqual(performance.getEntriesByType('resource').length, 0);

      resolve();
    });
    performance.addEventListener('resourcetimingbufferfull', listener);
  });

  // Secondary buffer has been added to the global buffer.
  {
    const entries = performance.getEntriesByType('resource');
    assert.strictEqual(entries.length, 1);
    assert.strictEqual(entries[0].startTime, 2);
    // The last item is discarded.
  }


  performance.clearResourceTimings();
  performance.setResourceTimingBufferSize(1);
  performance.markResourceTiming(createTimingInfo(4), ...args);
  // Trigger a resourcetimingbufferfull event.
  performance.markResourceTiming(createTimingInfo(5), ...args);
  performance.markResourceTiming(createTimingInfo(6), ...args);

  // Increase the buffer size on resourcetimingbufferfull event.
  await new Promise((resolve) => {
    const listener = common.mustCall((event) => {
      assert.strictEqual(event.type, 'resourcetimingbufferfull');
      performance.removeEventListener('resourcetimingbufferfull', listener);

      performance.setResourceTimingBufferSize(2);
      assert.strictEqual(performance.getEntriesByType('resource').length, 1);

      resolve();
    });