505 lines
No EOL
21 KiB
JavaScript
505 lines
No EOL
21 KiB
JavaScript
import { Observable } from '../Observable';
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import { ColdObservable } from './ColdObservable';
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import { HotObservable } from './HotObservable';
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import { SubscriptionLog } from './SubscriptionLog';
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import { VirtualTimeScheduler, VirtualAction } from '../scheduler/VirtualTimeScheduler';
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import { COMPLETE_NOTIFICATION, errorNotification, nextNotification } from '../NotificationFactories';
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import { dateTimestampProvider } from '../scheduler/dateTimestampProvider';
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import { performanceTimestampProvider } from '../scheduler/performanceTimestampProvider';
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import { animationFrameProvider } from '../scheduler/animationFrameProvider';
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import { immediateProvider } from '../scheduler/immediateProvider';
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import { intervalProvider } from '../scheduler/intervalProvider';
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import { timeoutProvider } from '../scheduler/timeoutProvider';
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const defaultMaxFrame = 750;
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export class TestScheduler extends VirtualTimeScheduler {
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constructor(assertDeepEqual) {
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super(VirtualAction, defaultMaxFrame);
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this.assertDeepEqual = assertDeepEqual;
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this.hotObservables = [];
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this.coldObservables = [];
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this.flushTests = [];
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this.runMode = false;
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}
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createTime(marbles) {
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const indexOf = this.runMode ? marbles.trim().indexOf('|') : marbles.indexOf('|');
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if (indexOf === -1) {
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throw new Error('marble diagram for time should have a completion marker "|"');
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}
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return indexOf * TestScheduler.frameTimeFactor;
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}
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createColdObservable(marbles, values, error) {
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if (marbles.indexOf('^') !== -1) {
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throw new Error('cold observable cannot have subscription offset "^"');
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}
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if (marbles.indexOf('!') !== -1) {
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throw new Error('cold observable cannot have unsubscription marker "!"');
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}
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const messages = TestScheduler.parseMarbles(marbles, values, error, undefined, this.runMode);
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const cold = new ColdObservable(messages, this);
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this.coldObservables.push(cold);
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return cold;
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}
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createHotObservable(marbles, values, error) {
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if (marbles.indexOf('!') !== -1) {
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throw new Error('hot observable cannot have unsubscription marker "!"');
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}
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const messages = TestScheduler.parseMarbles(marbles, values, error, undefined, this.runMode);
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const subject = new HotObservable(messages, this);
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this.hotObservables.push(subject);
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return subject;
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}
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materializeInnerObservable(observable, outerFrame) {
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const messages = [];
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observable.subscribe({
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next: (value) => {
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messages.push({ frame: this.frame - outerFrame, notification: nextNotification(value) });
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},
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error: (error) => {
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messages.push({ frame: this.frame - outerFrame, notification: errorNotification(error) });
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},
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complete: () => {
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messages.push({ frame: this.frame - outerFrame, notification: COMPLETE_NOTIFICATION });
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},
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});
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return messages;
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}
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expectObservable(observable, subscriptionMarbles = null) {
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const actual = [];
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const flushTest = { actual, ready: false };
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const subscriptionParsed = TestScheduler.parseMarblesAsSubscriptions(subscriptionMarbles, this.runMode);
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const subscriptionFrame = subscriptionParsed.subscribedFrame === Infinity ? 0 : subscriptionParsed.subscribedFrame;
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const unsubscriptionFrame = subscriptionParsed.unsubscribedFrame;
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let subscription;
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this.schedule(() => {
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subscription = observable.subscribe({
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next: (x) => {
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const value = x instanceof Observable ? this.materializeInnerObservable(x, this.frame) : x;
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actual.push({ frame: this.frame, notification: nextNotification(value) });
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},
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error: (error) => {
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actual.push({ frame: this.frame, notification: errorNotification(error) });
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},
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complete: () => {
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actual.push({ frame: this.frame, notification: COMPLETE_NOTIFICATION });
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},
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});
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}, subscriptionFrame);
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if (unsubscriptionFrame !== Infinity) {
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this.schedule(() => subscription.unsubscribe(), unsubscriptionFrame);
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}
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this.flushTests.push(flushTest);
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const { runMode } = this;
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return {
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toBe(marbles, values, errorValue) {
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flushTest.ready = true;
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flushTest.expected = TestScheduler.parseMarbles(marbles, values, errorValue, true, runMode);
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},
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toEqual: (other) => {
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flushTest.ready = true;
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flushTest.expected = [];
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this.schedule(() => {
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subscription = other.subscribe({
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next: (x) => {
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const value = x instanceof Observable ? this.materializeInnerObservable(x, this.frame) : x;
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flushTest.expected.push({ frame: this.frame, notification: nextNotification(value) });
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},
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error: (error) => {
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flushTest.expected.push({ frame: this.frame, notification: errorNotification(error) });
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},
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complete: () => {
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flushTest.expected.push({ frame: this.frame, notification: COMPLETE_NOTIFICATION });
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},
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});
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}, subscriptionFrame);
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},
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};
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}
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expectSubscriptions(actualSubscriptionLogs) {
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const flushTest = { actual: actualSubscriptionLogs, ready: false };
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this.flushTests.push(flushTest);
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const { runMode } = this;
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return {
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toBe(marblesOrMarblesArray) {
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const marblesArray = typeof marblesOrMarblesArray === 'string' ? [marblesOrMarblesArray] : marblesOrMarblesArray;
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flushTest.ready = true;
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flushTest.expected = marblesArray
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.map((marbles) => TestScheduler.parseMarblesAsSubscriptions(marbles, runMode))
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.filter((marbles) => marbles.subscribedFrame !== Infinity);
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},
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};
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}
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flush() {
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const hotObservables = this.hotObservables;
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while (hotObservables.length > 0) {
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hotObservables.shift().setup();
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}
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super.flush();
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this.flushTests = this.flushTests.filter((test) => {
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if (test.ready) {
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this.assertDeepEqual(test.actual, test.expected);
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return false;
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}
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return true;
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});
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}
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static parseMarblesAsSubscriptions(marbles, runMode = false) {
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if (typeof marbles !== 'string') {
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return new SubscriptionLog(Infinity);
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}
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const characters = [...marbles];
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const len = characters.length;
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let groupStart = -1;
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let subscriptionFrame = Infinity;
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let unsubscriptionFrame = Infinity;
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let frame = 0;
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for (let i = 0; i < len; i++) {
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let nextFrame = frame;
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const advanceFrameBy = (count) => {
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nextFrame += count * this.frameTimeFactor;
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};
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const c = characters[i];
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switch (c) {
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case ' ':
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if (!runMode) {
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advanceFrameBy(1);
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}
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break;
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case '-':
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advanceFrameBy(1);
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break;
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case '(':
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groupStart = frame;
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advanceFrameBy(1);
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break;
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case ')':
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groupStart = -1;
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advanceFrameBy(1);
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break;
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case '^':
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if (subscriptionFrame !== Infinity) {
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throw new Error("found a second subscription point '^' in a " + 'subscription marble diagram. There can only be one.');
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}
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subscriptionFrame = groupStart > -1 ? groupStart : frame;
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advanceFrameBy(1);
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break;
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case '!':
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if (unsubscriptionFrame !== Infinity) {
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throw new Error("found a second unsubscription point '!' in a " + 'subscription marble diagram. There can only be one.');
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}
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unsubscriptionFrame = groupStart > -1 ? groupStart : frame;
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break;
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default:
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if (runMode && c.match(/^[0-9]$/)) {
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if (i === 0 || characters[i - 1] === ' ') {
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const buffer = characters.slice(i).join('');
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const match = buffer.match(/^([0-9]+(?:\.[0-9]+)?)(ms|s|m) /);
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if (match) {
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i += match[0].length - 1;
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const duration = parseFloat(match[1]);
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const unit = match[2];
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let durationInMs;
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switch (unit) {
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case 'ms':
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durationInMs = duration;
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break;
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case 's':
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durationInMs = duration * 1000;
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break;
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case 'm':
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durationInMs = duration * 1000 * 60;
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break;
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default:
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break;
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}
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advanceFrameBy(durationInMs / this.frameTimeFactor);
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break;
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}
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}
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}
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throw new Error("there can only be '^' and '!' markers in a " + "subscription marble diagram. Found instead '" + c + "'.");
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}
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frame = nextFrame;
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}
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if (unsubscriptionFrame < 0) {
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return new SubscriptionLog(subscriptionFrame);
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}
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else {
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return new SubscriptionLog(subscriptionFrame, unsubscriptionFrame);
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}
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}
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static parseMarbles(marbles, values, errorValue, materializeInnerObservables = false, runMode = false) {
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if (marbles.indexOf('!') !== -1) {
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throw new Error('conventional marble diagrams cannot have the ' + 'unsubscription marker "!"');
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}
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const characters = [...marbles];
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const len = characters.length;
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const testMessages = [];
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const subIndex = runMode ? marbles.replace(/^[ ]+/, '').indexOf('^') : marbles.indexOf('^');
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let frame = subIndex === -1 ? 0 : subIndex * -this.frameTimeFactor;
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const getValue = typeof values !== 'object'
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? (x) => x
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: (x) => {
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if (materializeInnerObservables && values[x] instanceof ColdObservable) {
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return values[x].messages;
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}
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return values[x];
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};
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let groupStart = -1;
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for (let i = 0; i < len; i++) {
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let nextFrame = frame;
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const advanceFrameBy = (count) => {
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nextFrame += count * this.frameTimeFactor;
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};
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let notification;
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const c = characters[i];
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switch (c) {
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case ' ':
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if (!runMode) {
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advanceFrameBy(1);
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}
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break;
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case '-':
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advanceFrameBy(1);
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break;
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case '(':
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groupStart = frame;
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advanceFrameBy(1);
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break;
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case ')':
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groupStart = -1;
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advanceFrameBy(1);
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break;
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case '|':
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notification = COMPLETE_NOTIFICATION;
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advanceFrameBy(1);
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break;
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case '^':
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advanceFrameBy(1);
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break;
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case '#':
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notification = errorNotification(errorValue || 'error');
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advanceFrameBy(1);
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break;
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default:
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if (runMode && c.match(/^[0-9]$/)) {
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if (i === 0 || characters[i - 1] === ' ') {
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const buffer = characters.slice(i).join('');
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const match = buffer.match(/^([0-9]+(?:\.[0-9]+)?)(ms|s|m) /);
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if (match) {
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i += match[0].length - 1;
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const duration = parseFloat(match[1]);
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const unit = match[2];
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let durationInMs;
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switch (unit) {
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case 'ms':
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durationInMs = duration;
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break;
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case 's':
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durationInMs = duration * 1000;
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break;
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case 'm':
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durationInMs = duration * 1000 * 60;
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break;
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default:
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break;
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}
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advanceFrameBy(durationInMs / this.frameTimeFactor);
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break;
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}
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}
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}
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notification = nextNotification(getValue(c));
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advanceFrameBy(1);
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break;
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}
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if (notification) {
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testMessages.push({ frame: groupStart > -1 ? groupStart : frame, notification });
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}
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frame = nextFrame;
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}
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return testMessages;
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}
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createAnimator() {
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if (!this.runMode) {
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throw new Error('animate() must only be used in run mode');
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}
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let lastHandle = 0;
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let map;
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const delegate = {
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requestAnimationFrame(callback) {
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if (!map) {
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throw new Error('animate() was not called within run()');
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}
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const handle = ++lastHandle;
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map.set(handle, callback);
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return handle;
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},
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cancelAnimationFrame(handle) {
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if (!map) {
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throw new Error('animate() was not called within run()');
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}
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map.delete(handle);
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},
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};
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const animate = (marbles) => {
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if (map) {
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throw new Error('animate() must not be called more than once within run()');
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}
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if (/[|#]/.test(marbles)) {
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throw new Error('animate() must not complete or error');
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}
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map = new Map();
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const messages = TestScheduler.parseMarbles(marbles, undefined, undefined, undefined, true);
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for (const message of messages) {
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this.schedule(() => {
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const now = this.now();
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const callbacks = Array.from(map.values());
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map.clear();
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for (const callback of callbacks) {
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callback(now);
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}
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}, message.frame);
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}
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};
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return { animate, delegate };
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}
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createDelegates() {
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let lastHandle = 0;
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const scheduleLookup = new Map();
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const run = () => {
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const now = this.now();
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const scheduledRecords = Array.from(scheduleLookup.values());
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const scheduledRecordsDue = scheduledRecords.filter(({ due }) => due <= now);
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const dueImmediates = scheduledRecordsDue.filter(({ type }) => type === 'immediate');
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if (dueImmediates.length > 0) {
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const { handle, handler } = dueImmediates[0];
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scheduleLookup.delete(handle);
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handler();
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return;
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}
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const dueIntervals = scheduledRecordsDue.filter(({ type }) => type === 'interval');
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if (dueIntervals.length > 0) {
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const firstDueInterval = dueIntervals[0];
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const { duration, handler } = firstDueInterval;
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firstDueInterval.due = now + duration;
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firstDueInterval.subscription = this.schedule(run, duration);
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handler();
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return;
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}
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const dueTimeouts = scheduledRecordsDue.filter(({ type }) => type === 'timeout');
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if (dueTimeouts.length > 0) {
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const { handle, handler } = dueTimeouts[0];
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scheduleLookup.delete(handle);
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handler();
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return;
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}
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throw new Error('Expected a due immediate or interval');
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};
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const immediate = {
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setImmediate: (handler) => {
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const handle = ++lastHandle;
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scheduleLookup.set(handle, {
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due: this.now(),
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duration: 0,
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handle,
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handler,
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subscription: this.schedule(run, 0),
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type: 'immediate',
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});
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return handle;
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},
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clearImmediate: (handle) => {
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const value = scheduleLookup.get(handle);
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if (value) {
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value.subscription.unsubscribe();
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scheduleLookup.delete(handle);
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}
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},
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};
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const interval = {
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setInterval: (handler, duration = 0) => {
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const handle = ++lastHandle;
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scheduleLookup.set(handle, {
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due: this.now() + duration,
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duration,
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handle,
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handler,
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subscription: this.schedule(run, duration),
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type: 'interval',
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});
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return handle;
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},
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clearInterval: (handle) => {
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const value = scheduleLookup.get(handle);
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if (value) {
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value.subscription.unsubscribe();
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scheduleLookup.delete(handle);
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}
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},
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};
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const timeout = {
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setTimeout: (handler, duration = 0) => {
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const handle = ++lastHandle;
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scheduleLookup.set(handle, {
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due: this.now() + duration,
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duration,
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handle,
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handler,
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subscription: this.schedule(run, duration),
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type: 'timeout',
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});
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return handle;
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},
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clearTimeout: (handle) => {
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const value = scheduleLookup.get(handle);
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if (value) {
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value.subscription.unsubscribe();
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scheduleLookup.delete(handle);
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}
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},
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};
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return { immediate, interval, timeout };
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}
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run(callback) {
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const prevFrameTimeFactor = TestScheduler.frameTimeFactor;
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const prevMaxFrames = this.maxFrames;
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TestScheduler.frameTimeFactor = 1;
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this.maxFrames = Infinity;
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this.runMode = true;
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const animator = this.createAnimator();
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const delegates = this.createDelegates();
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animationFrameProvider.delegate = animator.delegate;
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dateTimestampProvider.delegate = this;
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immediateProvider.delegate = delegates.immediate;
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intervalProvider.delegate = delegates.interval;
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timeoutProvider.delegate = delegates.timeout;
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performanceTimestampProvider.delegate = this;
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const helpers = {
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cold: this.createColdObservable.bind(this),
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hot: this.createHotObservable.bind(this),
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flush: this.flush.bind(this),
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time: this.createTime.bind(this),
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expectObservable: this.expectObservable.bind(this),
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expectSubscriptions: this.expectSubscriptions.bind(this),
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animate: animator.animate,
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};
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try {
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const ret = callback(helpers);
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this.flush();
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return ret;
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}
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finally {
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TestScheduler.frameTimeFactor = prevFrameTimeFactor;
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this.maxFrames = prevMaxFrames;
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this.runMode = false;
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animationFrameProvider.delegate = undefined;
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dateTimestampProvider.delegate = undefined;
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immediateProvider.delegate = undefined;
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intervalProvider.delegate = undefined;
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timeoutProvider.delegate = undefined;
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performanceTimestampProvider.delegate = undefined;
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}
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}
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}
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TestScheduler.frameTimeFactor = 10;
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//# sourceMappingURL=TestScheduler.js.map
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