<!DOCTYPE html>
<meta charset="utf-8">
<title>KV Storage: backingStore getter</title>
<!-- See https://github.com/WICG/kv-storage/issues/45 -->

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script type="module">
import { storage } from "std:kv-storage";

test(() => {
  assert_equals(storage.backingStore, storage.backingStore);
}, "backingStore must return the same object each time");

test(() => {
  assert_true(Object.isFrozen(storage.backingStore));
}, "backingStore must be a frozen object");

test(() => {
  const { backingStore } = storage;
  assert_array_equals(Object.keys(backingStore), ["database", "store", "version"], "property names");
  assert_array_equals(Object.getOwnPropertySymbols(backingStore), [], "no symbols")
  assert_own_property(backingStore, "database");
  assert_own_property(backingStore, "store");
  assert_own_property(backingStore, "version");
  assert_equals(Object.getPrototypeOf(backingStore), Object.prototype);

  assert_equals(backingStore.database, "kv-storage:default");
  assert_equals(backingStore.store, "store");
  assert_equals(backingStore.version, 1);
}, "backingStore object must have the right shape");
</script>