93 lines
3.8 KiB
TypeScript
93 lines
3.8 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {PrefetchAssetGroup} from '../src/assets';
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import {CacheDatabase} from '../src/db-cache';
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import {IdleScheduler} from '../src/idle';
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import {MockFileSystemBuilder, MockServerStateBuilder, tmpHashTable, tmpManifestSingleAssetGroup} from '../testing/mock';
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import {SwTestHarness, SwTestHarnessBuilder} from '../testing/scope';
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(function() {
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// Skip environments that don't support the minimum APIs needed to run the SW tests.
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if (!SwTestHarness.envIsSupported()) {
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return;
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}
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const dist = new MockFileSystemBuilder()
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.addFile('/foo.txt', 'this is foo')
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.addFile('/bar.txt', 'this is bar')
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.build();
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const manifest = tmpManifestSingleAssetGroup(dist);
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const server = new MockServerStateBuilder().withStaticFiles(dist).withManifest(manifest).build();
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const scope = new SwTestHarnessBuilder().withServerState(server).build();
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const db = new CacheDatabase(scope, scope);
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describe('prefetch assets', () => {
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let group: PrefetchAssetGroup;
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let idle: IdleScheduler;
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beforeEach(() => {
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idle = new IdleScheduler(null!, 3000, {
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log: (v, ctx = '') => console.error(v, ctx),
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});
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group = new PrefetchAssetGroup(
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scope, scope, idle, manifest.assetGroups![0], tmpHashTable(manifest), db, 'test');
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});
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it('initializes without crashing', async () => {
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await group.initializeFully();
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});
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it('fully caches the two files', async () => {
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await group.initializeFully();
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scope.updateServerState();
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const res1 = await group.handleFetch(scope.newRequest('/foo.txt'), scope);
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const res2 = await group.handleFetch(scope.newRequest('/bar.txt'), scope);
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expect(await res1!.text()).toEqual('this is foo');
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expect(await res2!.text()).toEqual('this is bar');
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});
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it('persists the cache across restarts', async () => {
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await group.initializeFully();
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const freshScope = new SwTestHarnessBuilder().withCacheState(scope.caches.dehydrate()).build();
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group = new PrefetchAssetGroup(
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freshScope, freshScope, idle, manifest.assetGroups![0], tmpHashTable(manifest),
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new CacheDatabase(freshScope, freshScope), 'test');
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await group.initializeFully();
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const res1 = await group.handleFetch(scope.newRequest('/foo.txt'), scope);
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const res2 = await group.handleFetch(scope.newRequest('/bar.txt'), scope);
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expect(await res1!.text()).toEqual('this is foo');
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expect(await res2!.text()).toEqual('this is bar');
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});
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it('caches properly if resources are requested before initialization', async () => {
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const res1 = await group.handleFetch(scope.newRequest('/foo.txt'), scope);
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const res2 = await group.handleFetch(scope.newRequest('/bar.txt'), scope);
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expect(await res1!.text()).toEqual('this is foo');
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expect(await res2!.text()).toEqual('this is bar');
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scope.updateServerState();
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await group.initializeFully();
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});
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it('throws if the server-side content does not match the manifest hash', async () => {
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const badHashFs = dist.extend().addFile('/foo.txt', 'corrupted file').build();
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const badServer =
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new MockServerStateBuilder().withManifest(manifest).withStaticFiles(badHashFs).build();
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const badScope = new SwTestHarnessBuilder().withServerState(badServer).build();
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group = new PrefetchAssetGroup(
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badScope, badScope, idle, manifest.assetGroups![0], tmpHashTable(manifest),
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new CacheDatabase(badScope, badScope), 'test');
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const err = await errorFrom(group.initializeFully());
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expect(err.message).toContain('Hash mismatch');
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});
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});
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})();
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function errorFrom(promise: Promise<any>): Promise<any> {
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return promise.catch(err => err);
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}
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