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<!DOCTYPE html>
<meta charset="utf-8">
<title>KV Storage: API surface</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script type="module">
import { storage, StorageArea } from "std:kv-storage";
import * as classAssert from "./helpers/class-assert.js";
import { testWithArea } from "./helpers/kvs-tests.js";
test(() => {
classAssert.isConstructor(StorageArea);
classAssert.functionName(StorageArea, "StorageArea");
classAssert.functionLength(StorageArea, 1);
classAssert.hasClassPrototype(StorageArea);
classAssert.hasPrototypeConstructorLink(StorageArea);
classAssert.propertyKeys(StorageArea, ["length", "prototype", "name"], []);
}, "StorageArea constructor");
test(() => {
classAssert.propertyKeys(StorageArea.prototype, [
"constructor", "set", "get", "delete", "clear",
"keys", "values", "entries", "backingStore"
], [
Symbol.asyncIterator
]);
classAssert.methods(StorageArea.prototype, {
set: 2,
get: 1,
delete: 1,
clear: 0,
keys: 0,
values: 0,
entries: 0
});
classAssert.accessors(StorageArea.prototype, {
backingStore: ["get"]
});
}, "StorageArea.prototype methods and properties");
test(() => {
assert_equals(StorageArea.prototype[Symbol.asyncIterator], StorageArea.prototype.entries);
}, "[Symbol.asyncIterator]() and entries() must be the same function");
testWithArea(async area => {
classAssert.propertyKeys(area, [], []);
}, "Instances don't have any properties");
test(() => {
assert_equals(storage instanceof StorageArea, true, "instanceof");
assert_equals(storage.constructor, StorageArea, ".constructor property");
assert_equals(Object.getPrototypeOf(storage), StorageArea.prototype, "[[Prototype]]");
}, "Built-in storage export is a StorageArea");
testWithArea(async area => {
assert_false(Symbol.toStringTag in StorageArea.prototype,
"Symbol.toStringTag must not be in the prototype");
assert_equals(Object.prototype.toString.call(StorageArea.prototype), "[object Object]",
"The prototype must not be customized");
assert_equals(Object.prototype.toString.call(area), "[object Object]",
"A constructed StorageArea must not be customized");
assert_equals(Object.prototype.toString.call(storage), "[object Object]",
"The default storage area must not be customized");
}, "No custom toStringTag");
</script>
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