1 | import {EventHandler, EventsManager} from "../src/events-manager";
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2 | import {EventsMatcher} from "../test-kit/drivers/events-matcher";
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3 | import {DirectoryCreatedEvent, FileDeletedEvent, fileSystemEventNames} from "../src/universal";
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4 | import {delayedPromise} from "../src/promise-utils";
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5 | import * as sinon from 'sinon';
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6 | import {expect} from "chai";
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7 |
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8 | describe('EventsManager', () => {
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9 | let matcher: EventsMatcher;
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10 | let em: EventsManager;
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11 |
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12 | const event1 = {type: 'fileDeleted', fullPath: 'foo'} as FileDeletedEvent;
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13 | const event2 = {type: 'fileDeleted', fullPath: 'bar'} as FileDeletedEvent;
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14 | const event3 = {type: 'directoryCreated', fullPath: 'baz'} as DirectoryCreatedEvent;
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15 | const handler = {
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16 | types: ['fileDeleted'],
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17 | filter: (e) => e === event1,
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18 | apply: () => (event3 as any),
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19 | } as EventHandler<'fileDeleted'>;
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20 |
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21 | beforeEach('setup', () => {
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22 | em = new EventsManager();
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23 | matcher = new EventsMatcher({retries: 15, interval: 2, timeout: 40, noExtraEventsGrace: 10});
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24 | matcher.track(em.events, ...fileSystemEventNames);
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25 | });
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26 |
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27 | describe('delays', async () => {
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28 | const delay = 50;
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29 | let delayedManager: EventsManager;
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30 | let delayedManagerMatcher: EventsMatcher;
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31 | beforeEach('setup', () => {
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32 | em = new EventsManager();
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33 | delayedManager = new EventsManager({delay});
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34 | delayedManagerMatcher = new EventsMatcher({
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35 | retries: 15,
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36 | interval: 2,
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37 | timeout: 40,
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38 | noExtraEventsGrace: 10
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39 | });
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40 | delayedManagerMatcher.track(delayedManager.events, ...fileSystemEventNames);
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41 | });
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42 |
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43 | it('events', async () => {
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44 | delayedManager.emit(event1);
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45 | await delayedManagerMatcher.expect([]);
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46 | await delayedPromise(delay * 2);
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47 | await delayedManagerMatcher.expect([event1]);
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48 | });
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49 |
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50 | it('handlers', async () => {
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51 | const spy = sinon.spy();
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52 | delayedManager.addEventHandler({
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53 | types: ['fileDeleted'],
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54 | filter: spy,
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55 | apply: () => {
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56 | },
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57 | });
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58 | delayedManager.emit(event1);
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59 | await expect(spy).to.have.callCount(0);
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60 | await delayedPromise(delay * 2);
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61 | await expect(spy).to.have.callCount(1);
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62 | });
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63 | });
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64 |
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65 | it('emits events', async () => {
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66 | em.emit(event1);
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67 | await matcher.expect([event1]);
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68 | });
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69 |
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70 |
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71 | it('modifies matching events', async () => {
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72 | em.addEventHandler(handler);
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73 | em.emit(event1);
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74 | em.emit(event2);
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75 | await matcher.expect([event3, event2]);
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76 | });
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77 |
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78 | it('filters matching events', async () => {
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79 | em.addEventHandler({
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80 | types: ['fileDeleted'],
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81 | filter: (e) => e === event1,
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82 | apply: () => {
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83 | },
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84 | });
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85 | em.emit(event1);
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86 | em.emit(event2);
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87 | await matcher.expect([event2]);
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88 | });
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89 |
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90 | it('respects time out (assume clean-up)', async () => {
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91 | em.addEventHandler(handler, 1);
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92 | await delayedPromise(10);
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93 | em.emit(event1);
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94 | await matcher.expect([event1]);
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95 | });
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96 |
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97 |
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98 | it('removes handlers', async () => {
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99 | em.addEventHandler(handler);
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100 | em.removeEventHandler(handler);
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101 | em.emit(event1);
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102 | await matcher.expect([event1]);
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103 | });
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104 | });
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