1 files changed, 32 insertions, 0 deletions
diff --git a/testing/web-platform/tests/storage/buckets/buckets_storage_policy.tentative.https.any.js b/testing/web-platform/tests/storage/buckets/buckets_storage_policy.tentative.https.any.js
new file mode 100644
index 0000000000..918364d731
--- /dev/null
+++ b/testing/web-platform/tests/storage/buckets/buckets_storage_policy.tentative.https.any.js
@@ -0,0 +1,32 @@
+// META: title=Buckets API: Tests for bucket storage policies.
+// META: script=resources/util.js
+// META: global=window,worker
+
+'use strict';
+
+function sanitizeQuota(quota) {
+  return Math.max(1, Math.min(Number.MAX_SAFE_INTEGER, Math.floor(quota)));
+}
+
+async function testQuota(storageKeyQuota, quota, name) {
+  const safeQuota = sanitizeQuota(quota);
+  const bucket = await navigator.storageBuckets.open(name, { quota: safeQuota });
+  const estimateQuota = (await bucket.estimate()).quota;
+  assert_equals(estimateQuota, Math.min(safeQuota, storageKeyQuota));
+}
+
+promise_test(async testCase => {
+  await prepareForBucketTest(testCase);
+
+  const storageKeyQuota = (await navigator.storage.estimate()).quota;
+
+  testQuota(storageKeyQuota, 1, 'one');
+  testQuota(storageKeyQuota, storageKeyQuota / 4, 'quarter');
+  testQuota(storageKeyQuota, storageKeyQuota / 2, 'half');
+  testQuota(storageKeyQuota, storageKeyQuota - 1, 'one_less');
+  testQuota(storageKeyQuota, storageKeyQuota, 'origin_quota');
+  testQuota(storageKeyQuota, storageKeyQuota + 1, 'one_more');
+  testQuota(storageKeyQuota, storageKeyQuota * 2, 'twice');
+  testQuota(storageKeyQuota, storageKeyQuota * 4, 'four_times');
+  testQuota(storageKeyQuota, Number.MAX_SAFE_INTEGER, 'max_safe_int');
+}, 'For an individual bucket, the quota is the minimum of the requested quota and the StorageKey quota.');