| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>KV Storage: undefined values</title> |
| <meta name="timeout" content="long"> |
| |
| <!-- https://github.com/wicg/kv-storage/commit/5bf31109f37d1371f619ea33d0e2391f10e8b8f5 --> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <script type="module"> |
| import { StorageArea } from "std:kv-storage"; |
| import { testWithArea } from "./helpers/kvs-tests.js"; |
| import { assertAsyncIteratorEquals } from "./helpers/equality-asserters.js"; |
| |
| testWithArea(async (area) => { |
| assert_equals(await area.get("key"), undefined); |
| }, "Get on a non-existant key returns undefined"); |
| |
| testWithArea(async (area) => { |
| await area.set("key", undefined); |
| assert_equals(await area.get("key"), undefined); |
| |
| await assertAsyncIteratorEquals(area.keys(), [], "keys"); |
| await assertAsyncIteratorEquals(area.values(), [], "values"); |
| await assertAsyncIteratorEquals(area.entries(), [], "entries"); |
| }, "Setting undefined as a value when nothing was present is a no-op"); |
| |
| testWithArea(async (area) => { |
| await area.set("key", "value"); |
| await area.set("key", undefined); |
| |
| assert_equals(await area.get("key"), undefined); |
| |
| await assertAsyncIteratorEquals(area.keys(), [], "keys"); |
| await assertAsyncIteratorEquals(area.values(), [], "values"); |
| await assertAsyncIteratorEquals(area.entries(), [], "entries"); |
| }, "Setting undefined as a value deletes what was previously there"); |
| </script> |
