How to use workerReplyEnd method in Jest

Best JavaScript code snippet using jest

index.test.js

Source:index.test.js Github

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...10let mockWorkers;11function workerReplyStart(i) {12 mockWorkers[i].send.mock.calls[0][1](mockWorkers[i]);13}14function workerReplyEnd(i, error, result) {15 mockWorkers[i].send.mock.calls[0][2](error, result);16}17function workerReply(i, error, result) {18 workerReplyStart(i);19 workerReplyEnd(i, error, result);20}21beforeEach(() => {22 mockWorkers = [];23 // The worker mock returns a worker with custom methods, plus it stores them24 // in a global list, so that they can be accessed later. This list is reset in25 // every test.26 jest.mock('../Worker', () => {27 const fakeClass = jest.fn(() => {28 const fakeWorker = {29 getStderr: () => ({once() {}, pipe() {}}),30 getStdout: () => ({once() {}, pipe() {}}),31 send: jest.fn(),32 };33 mockWorkers.push(fakeWorker);...

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71index.test.js

Source:71index.test.js Github

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...10let mockWorkers;11function workerReplyStart(i) {12 mockWorkers[i].send.mock.calls[0][1](mockWorkers[i]);13}14function workerReplyEnd(i, error, result) {15 mockWorkers[i].send.mock.calls[0][2](error, result);16}17function workerReply(i, error, result) {18 workerReplyStart(i);19 workerReplyEnd(i, error, result);20}21beforeEach(() => {22 mockWorkers = [];23 // The worker mock returns a worker with custom methods, plus it stores them24 // in a global list, so that they can be accessed later. This list is reset in25 // every test.26 jest.mock('../Worker', () => {27 const fakeClass = jest.fn(() => {28 const fakeWorker = {29 getStderr: () => ({once() {}, pipe() {}}),30 getStdout: () => ({once() {}, pipe() {}}),31 send: jest.fn(),32 };33 mockWorkers.push(fakeWorker);...

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Farm.test.js

Source:Farm.test.js Github

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...10let callback;11function workerReplyStart(i) {12 mockWorkerCalls[i].onStart({getWorkerId: () => mockWorkerCalls[i].workerId});13}14function workerReplyEnd(i, error, result) {15 mockWorkerCalls[i].onEnd(error, result);16}17function workerReply(i, error, result) {18 workerReplyStart(i);19 workerReplyEnd(i, error, result);20}21describe('Farm', () => {22 beforeEach(() => {23 mockWorkerCalls = [];24 callback = jest.fn((...args) => {25 mockWorkerCalls.push({26 onEnd: args[3],27 onStart: args[2],28 passed: args[1],29 workerId: args[0],30 });31 });32 });33 it('sends a request to one worker', () => {34 const farm = new Farm(4, callback);35 farm.doWork('foo', 42);36 expect(callback).toHaveBeenCalledTimes(1);37 expect(callback).toHaveBeenCalledWith(38 0,39 [1, true, 'foo', [42]],40 expect.any(Function),41 expect.any(Function),42 );43 });44 it('sends four requests to four unique workers', () => {45 const farm = new Farm(4, callback);46 farm.doWork('foo', 42);47 farm.doWork('foo1', 43);48 farm.doWork('foo2', 44);49 farm.doWork('foo3', 45);50 expect(callback).toHaveBeenCalledTimes(4);51 expect(callback).toHaveBeenNthCalledWith(52 1,53 0, // first worker54 [1, true, 'foo', [42]],55 expect.any(Function),56 expect.any(Function),57 );58 expect(callback).toHaveBeenNthCalledWith(59 2,60 1, // second worker61 [1, true, 'foo1', [43]],62 expect.any(Function),63 expect.any(Function),64 );65 expect(callback).toHaveBeenNthCalledWith(66 3,67 2, // third worker68 [1, true, 'foo2', [44]],69 expect.any(Function),70 expect.any(Function),71 );72 expect(callback).toHaveBeenNthCalledWith(73 4,74 3, // fourth worker75 [1, true, 'foo3', [45]],76 expect.any(Function),77 expect.any(Function),78 );79 });80 it('handles null computeWorkerKey, sending to first worker', async () => {81 const computeWorkerKey = jest.fn(() => null);82 const farm = new Farm(4, callback, computeWorkerKey);83 const p0 = farm.doWork('foo', 42);84 workerReply(0);85 await p0;86 expect(computeWorkerKey).toBeCalledTimes(1);87 expect(computeWorkerKey).toHaveBeenNthCalledWith(1, 'foo', 42);88 expect(callback).toHaveBeenCalledTimes(1);89 expect(callback).toHaveBeenNthCalledWith(90 1,91 0, // first worker92 [1, true, 'foo', [42]],93 expect.any(Function),94 expect.any(Function),95 );96 });97 it('sends the same worker key to the same worker', async () => {98 const computeWorkerKey = jest99 .fn(() => {})100 .mockReturnValueOnce('one')101 .mockReturnValueOnce('two')102 .mockReturnValueOnce('one');103 const farm = new Farm(4, callback, computeWorkerKey);104 const p0 = farm.doWork('foo', 42);105 workerReply(0);106 await p0;107 const p1 = farm.doWork('foo1', 43);108 workerReply(1);109 await p1;110 const p2 = farm.doWork('foo2', 44);111 workerReply(2);112 await p2;113 expect(computeWorkerKey).toBeCalledTimes(3);114 expect(computeWorkerKey).toHaveBeenNthCalledWith(1, 'foo', 42);115 expect(computeWorkerKey).toHaveBeenNthCalledWith(2, 'foo1', 43);116 expect(computeWorkerKey).toHaveBeenNthCalledWith(3, 'foo2', 44);117 expect(callback).toHaveBeenCalledTimes(3);118 expect(callback).toHaveBeenNthCalledWith(119 1,120 0, // first worker121 [1, true, 'foo', [42]],122 expect.any(Function),123 expect.any(Function),124 );125 expect(callback).toHaveBeenNthCalledWith(126 2,127 1, // second worker128 [1, true, 'foo1', [43]],129 expect.any(Function),130 expect.any(Function),131 );132 expect(callback).toHaveBeenNthCalledWith(133 3,134 0, // first worker again135 [1, true, 'foo2', [44]],136 expect.any(Function),137 expect.any(Function),138 );139 });140 it('returns the result if the call worked', async () => {141 const farm = new Farm(4, callback);142 const promise = farm.doWork('car', 'plane');143 workerReply(0, null, 34);144 const result = await promise;145 expect(result).toEqual(34);146 });147 it('throws if the call failed', async () => {148 const farm = new Farm(4, callback);149 const promise = farm.doWork('car', 'plane');150 let error = null;151 workerReply(0, new TypeError('Massively broken'));152 try {153 await promise;154 } catch (err) {155 error = err;156 }157 expect(error).not.toBe(null);158 expect(error).toBeInstanceOf(TypeError);159 });160 it('checks that once a sticked task finishes, next time is sent to that worker', async () => {161 const farm = new Farm(4, callback, () => '1234567890abcdef');162 // Worker 1 successfully replies with "17" as a result.163 const p0 = farm.doWork('car', 'plane');164 workerReply(0, null, 17);165 await p0;166 // Note that the stickiness is not created by the method name or the arguments167 // it is solely controlled by the provided "computeWorkerKey" method, which in168 // the test example always returns the same key, so all calls should be169 // redirected to worker 1 (which is the one that resolved the first call).170 const p1 = farm.doWork('foo', 'bar');171 workerReply(1, null, 17);172 await p1;173 // The first time, a call with a "1234567890abcdef" hash had never been done174 // earlier ("foo" call), so it got queued to all workers. Later, since the one175 // that resolved the call was the one in position 1, all subsequent calls are176 // only redirected to that worker.177 expect(callback).toHaveBeenCalledTimes(2); // Only "foo".178 expect(callback).toHaveBeenNthCalledWith(179 1,180 0, // first worker181 [1, true, 'car', ['plane']],182 expect.any(Function),183 expect.any(Function),184 );185 expect(callback).toHaveBeenNthCalledWith(186 2,187 0, // first worker188 [1, true, 'foo', ['bar']],189 expect.any(Function),190 expect.any(Function),191 );192 });193 it('checks that even before a sticked task finishes, next time is sent to that worker', async () => {194 const farm = new Farm(4, callback, () => '1234567890abcdef');195 // Note that the worker is sending a start response synchronously.196 const p0 = farm.doWork('car', 'plane');197 workerReplyStart(0);198 // Note that the worker is sending a start response synchronously.199 const p1 = farm.doWork('foo', 'bar');200 // The first call is sent the worker, the second is queued201 expect(callback).toHaveBeenCalledTimes(1);202 // Flush the queue203 workerReplyEnd(0, null, 17);204 await p0;205 workerReply(1, null, 17);206 await p1;207 // Both requests are send to the same worker208 // The first time, a call with a "1234567890abcdef" hash had never been done209 // earlier ("foo" call), so it got queued to all workers. Later, since the one210 // that resolved the call was the one in position 1, all subsequent calls are211 // only redirected to that worker.212 expect(callback).toHaveBeenCalledTimes(2);213 expect(callback).toHaveBeenNthCalledWith(214 1,215 0, // first worker216 [1, true, 'car', ['plane']],217 expect.any(Function),...

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