<!doctype html>
<meta charset="utf-8">
<title>Background Sync API: Verifies that Periodic Background Sync works
  correctly.</title>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<script src="../serviceworker/resources/test-helpers.js"></script>
<script src="/serviceworker/resources/shared-utils.js"></script>
<script src="../resources/permissions-helper.js"></script>
<script src="./resources/utils.js"></script>

<script>
  periodicSyncTest(async (test, periodicSync) => {
    await periodicSync.register('test');
  }, 'register succeeds when no options are provided');

  periodicSyncTest(async (test, periodicSync) => {
    await periodicSync.register('test', {});
  }, 'register succeeds when no minInterval is provided');

  periodicSyncTest(async (test, periodicSync) => {
    await promise_rejects_js(
        test, TypeError,
        periodicSync.register('test', { minInterval: -1000 }),
        'register should have thrown an error');
  }, 'register fails when invalid minInterval is provided');

  periodicSyncTest(async (test, periodicSync) => {
    await periodicSync.register('test');
    const tags = await periodicSync.getTags();
    assert_equals(tags.length, 1);
    assert_equals(tags[0], 'test');
  }, 'getTags works as expected');

  periodicSyncTest(async (test, periodicSync) => {
    await periodicSync.unregister('non-existent');
  }, 'unregister succeeds when a non-existent tag is provided');

  periodicSyncTest(async (test, periodicSync) => {
    await periodicSync.register('test');
    let tags = await periodicSync.getTags();
    assert_equals(tags.length, 1);

    await periodicSync.unregister('test');
    tags = await periodicSync.getTags();
    assert_equals(tags.length, 0);
  }, 'unregister removes the specified registration');
</script>