angular-cn/packages/service-worker/worker/test/data_spec.ts

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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {CacheDatabase} from '../src/db-cache';
import {Driver} from '../src/driver';
import {Manifest} from '../src/manifest';
import {MockCache} from '../testing/cache';
import {MockRequest} from '../testing/fetch';
import {MockFileSystemBuilder, MockServerStateBuilder, tmpHashTableForFs} from '../testing/mock';
import {SwTestHarness, SwTestHarnessBuilder} from '../testing/scope';
(function() {
// Skip environments that don't support the minimum APIs needed to run the SW tests.
if (!SwTestHarness.envIsSupported()) {
return;
}
const dist = new MockFileSystemBuilder()
.addFile('/foo.txt', 'this is foo')
.addFile('/bar.txt', 'this is bar')
.addFile('/api/test', 'version 1')
.addFile('/api/a', 'version A')
.addFile('/api/b', 'version B')
.addFile('/api/c', 'version C')
.addFile('/api/d', 'version D')
.addFile('/api/e', 'version E')
.addFile('/fresh/data', 'this is fresh data')
.addFile('/refresh/data', 'this is some data')
.build();
const distUpdate = new MockFileSystemBuilder()
.addFile('/foo.txt', 'this is foo v2')
.addFile('/bar.txt', 'this is bar')
.addFile('/api/test', 'version 2')
.addFile('/fresh/data', 'this is fresher data')
.addFile('/refresh/data', 'this is refreshed data')
.build();
const manifest: Manifest = {
configVersion: 1,
timestamp: 1234567890123,
index: '/index.html',
assetGroups: [
{
name: 'assets',
installMode: 'prefetch',
updateMode: 'prefetch',
urls: [
'/foo.txt',
'/bar.txt',
],
patterns: [],
},
],
dataGroups: [
{
name: 'testPerf',
maxSize: 3,
strategy: 'performance',
patterns: ['^/api/.*$'],
timeoutMs: 1000,
maxAge: 5000,
version: 1,
cacheQueryOptions: {ignoreSearch: true},
},
{
name: 'testRefresh',
maxSize: 3,
strategy: 'performance',
patterns: ['^/refresh/.*$'],
timeoutMs: 1000,
refreshAheadMs: 1000,
maxAge: 5000,
version: 1,
},
{
name: 'testFresh',
maxSize: 3,
strategy: 'freshness',
patterns: ['^/fresh/.*$'],
timeoutMs: 1000,
maxAge: 5000,
version: 1,
},
],
navigationUrls: [],
hashTable: tmpHashTableForFs(dist),
};
const seqIncreasedManifest: Manifest = {
...manifest,
dataGroups: [
{
...manifest.dataGroups![0],
version: 2,
},
manifest.dataGroups![1],
manifest.dataGroups![2],
],
};
const server = new MockServerStateBuilder().withStaticFiles(dist).withManifest(manifest).build();
const serverUpdate =
new MockServerStateBuilder().withStaticFiles(distUpdate).withManifest(manifest).build();
const serverSeqUpdate = new MockServerStateBuilder()
.withStaticFiles(distUpdate)
.withManifest(seqIncreasedManifest)
.build();
describe('data cache', () => {
let scope: SwTestHarness;
let driver: Driver;
beforeEach(async () => {
scope = new SwTestHarnessBuilder().withServerState(server).build();
driver = new Driver(scope, scope, new CacheDatabase(scope, scope));
// Initialize.
expect(await makeRequest(scope, '/foo.txt')).toEqual('this is foo');
await driver.initialized;
server.clearRequests();
serverUpdate.clearRequests();
serverSeqUpdate.clearRequests();
});
afterEach(() => {
server.reset();
serverUpdate.reset();
serverSeqUpdate.reset();
});
describe('in performance mode', () => {
it('names the caches correctly', async () => {
expect(await makeRequest(scope, '/api/test')).toEqual('version 1');
const keys = await scope.caches.keys();
expect(keys.every(key => key.startsWith('ngsw:/:'))).toEqual(true);
});
it('caches a basic request', async () => {
expect(await makeRequest(scope, '/api/test')).toEqual('version 1');
server.assertSawRequestFor('/api/test');
scope.advance(1000);
expect(await makeRequest(scope, '/api/test')).toEqual('version 1');
server.assertNoOtherRequests();
});
it('does not cache opaque responses', async () => {
expect(await makeNoCorsRequest(scope, '/api/test')).toBe('');
server.assertSawRequestFor('/api/test');
expect(await makeNoCorsRequest(scope, '/api/test')).toBe('');
server.assertSawRequestFor('/api/test');
});
it('refreshes after awhile', async () => {
expect(await makeRequest(scope, '/api/test')).toEqual('version 1');
server.clearRequests();
scope.advance(10000);
scope.updateServerState(serverUpdate);
expect(await makeRequest(scope, '/api/test')).toEqual('version 2');
});
it('expires the least recently used entry', async () => {
expect(await makeRequest(scope, '/api/a')).toEqual('version A');
expect(await makeRequest(scope, '/api/b')).toEqual('version B');
expect(await makeRequest(scope, '/api/c')).toEqual('version C');
expect(await makeRequest(scope, '/api/d')).toEqual('version D');
expect(await makeRequest(scope, '/api/e')).toEqual('version E');
server.clearRequests();
expect(await makeRequest(scope, '/api/c')).toEqual('version C');
expect(await makeRequest(scope, '/api/d')).toEqual('version D');
expect(await makeRequest(scope, '/api/e')).toEqual('version E');
server.assertNoOtherRequests();
expect(await makeRequest(scope, '/api/a')).toEqual('version A');
expect(await makeRequest(scope, '/api/b')).toEqual('version B');
server.assertSawRequestFor('/api/a');
server.assertSawRequestFor('/api/b');
server.assertNoOtherRequests();
});
it('does not carry over cache with new version', async () => {
expect(await makeRequest(scope, '/api/test')).toEqual('version 1');
scope.updateServerState(serverSeqUpdate);
expect(await driver.checkForUpdate()).toEqual(true);
await driver.updateClient(await scope.clients.get('default'));
expect(await makeRequest(scope, '/api/test')).toEqual('version 2');
});
it('CacheQueryOptions are passed through', async () => {
await driver.initialized;
const matchSpy = spyOn(MockCache.prototype, 'match').and.callThrough();
// the first request fetches the resource from the server
await makeRequest(scope, '/api/a');
// the second one will be loaded from the cache
await makeRequest(scope, '/api/a');
expect(matchSpy).toHaveBeenCalledWith(new MockRequest('/api/a'), {ignoreSearch: true});
});
it('still matches if search differs but ignoreSearch is enabled', async () => {
await driver.initialized;
const matchSpy = spyOn(MockCache.prototype, 'match').and.callThrough();
// the first request fetches the resource from the server
await makeRequest(scope, '/api/a?v=1');
// the second one will be loaded from the cache
server.clearRequests();
await makeRequest(scope, '/api/a?v=2');
server.assertNoOtherRequests();
});
});
describe('in freshness mode', () => {
it('goes to the server first', async () => {
expect(await makeRequest(scope, '/fresh/data')).toEqual('this is fresh data');
server.assertSawRequestFor('/fresh/data');
server.clearRequests();
expect(await makeRequest(scope, '/fresh/data')).toEqual('this is fresh data');
server.assertSawRequestFor('/fresh/data');
server.assertNoOtherRequests();
scope.updateServerState(serverUpdate);
expect(await makeRequest(scope, '/fresh/data')).toEqual('this is fresher data');
serverUpdate.assertSawRequestFor('/fresh/data');
serverUpdate.assertNoOtherRequests();
});
it('caches opaque responses', async () => {
expect(await makeNoCorsRequest(scope, '/fresh/data')).toBe('');
server.assertSawRequestFor('/fresh/data');
server.online = false;
expect(await makeRequest(scope, '/fresh/data')).toBe('');
server.assertNoOtherRequests();
});
it('falls back on the cache when server times out', async () => {
expect(await makeRequest(scope, '/fresh/data')).toEqual('this is fresh data');
server.assertSawRequestFor('/fresh/data');
server.clearRequests();
scope.updateServerState(serverUpdate);
serverUpdate.pause();
const [res, done] = makePendingRequest(scope, '/fresh/data');
await serverUpdate.nextRequest;
// Since the network request doesn't return within the timeout of 1,000ms,
// this should return cached data.
scope.advance(2000);
expect(await res).toEqual('this is fresh data');
// Unpausing allows the worker to continue with caching.
serverUpdate.unpause();
await done;
serverUpdate.pause();
const [res2, done2] = makePendingRequest(scope, '/fresh/data');
await serverUpdate.nextRequest;
scope.advance(2000);
expect(await res2).toEqual('this is fresher data');
});
it('refreshes ahead', async () => {
server.assertNoOtherRequests();
serverUpdate.assertNoOtherRequests();
expect(await makeRequest(scope, '/refresh/data')).toEqual('this is some data');
server.assertSawRequestFor('/refresh/data');
server.clearRequests();
expect(await makeRequest(scope, '/refresh/data')).toEqual('this is some data');
server.assertNoOtherRequests();
scope.updateServerState(serverUpdate);
scope.advance(1500);
expect(await makeRequest(scope, '/refresh/data')).toEqual('this is some data');
serverUpdate.assertSawRequestFor('/refresh/data');
expect(await makeRequest(scope, '/refresh/data')).toEqual('this is refreshed data');
serverUpdate.assertNoOtherRequests();
});
it('caches opaque responses on refresh', async () => {
// Make the initial request and populate the cache.
expect(await makeRequest(scope, '/fresh/data')).toBe('this is fresh data');
server.assertSawRequestFor('/fresh/data');
server.clearRequests();
// Update the server state and pause the server, so the next request times out.
scope.updateServerState(serverUpdate);
serverUpdate.pause();
const [res, done] =
makePendingRequest(scope, new MockRequest('/fresh/data', {mode: 'no-cors'}));
// The network request times out after 1,000ms and the cached response is returned.
await serverUpdate.nextRequest;
scope.advance(2000);
expect(await res).toBe('this is fresh data');
// Unpause the server to allow the network request to complete and be cached.
serverUpdate.unpause();
await done;
// Pause the server to force the cached (opaque) response to be returned.
serverUpdate.pause();
const [res2] = makePendingRequest(scope, '/fresh/data');
await serverUpdate.nextRequest;
scope.advance(2000);
expect(await res2).toBe('');
});
});
});
})();
function makeRequest(scope: SwTestHarness, url: string, clientId?: string): Promise<string|null> {
const [resTextPromise, done] = makePendingRequest(scope, url, clientId);
return done.then(() => resTextPromise);
}
function makeNoCorsRequest(
scope: SwTestHarness, url: string, clientId?: string): Promise<string|null> {
const req = new MockRequest(url, {mode: 'no-cors'});
const [resTextPromise, done] = makePendingRequest(scope, req, clientId);
return done.then(() => resTextPromise);
}
function makePendingRequest(scope: SwTestHarness, urlOrReq: string|MockRequest, clientId?: string):
[Promise<string|null>, Promise<void>] {
const req = (typeof urlOrReq === 'string') ? new MockRequest(urlOrReq) : urlOrReq;
const [resPromise, done] = scope.handleFetch(req, clientId || 'default');
return [
resPromise.then<string|null>(res => res ? res.text() : null),
done,
];
}