estimate-usage-details-caches.https.tentative.any.js

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /storage/estimate-usage-details-caches.https.tentative.any.html - WPT Dashboard Interop Dashboard
- /storage/estimate-usage-details-caches.https.tentative.any.worker.html - WPT Dashboard Interop Dashboard

// META: title=StorageManager: estimate() for caches

promise_test(async t => {

  let estimate = await navigator.storage.estimate();

  const cachesUsageBeforeCreate = estimate.usageDetails.caches || 0;

  const cacheName = 'testCache';

  const cache = await caches.open(cacheName);

  t.add_cleanup(() => caches.delete(cacheName));

  await cache.put('/test.json', new Response('x'.repeat(1024*1024)));

  estimate = await navigator.storage.estimate();

  assert_true('caches' in estimate.usageDetails);

  const cachesUsageAfterPut = estimate.usageDetails.caches;

  assert_greater_than(

      cachesUsageAfterPut, cachesUsageBeforeCreate,

      'estimated usage should increase after value is stored');

}, 'estimate() shows usage increase after large value is stored');