How to use fake.rejects method in sinon

Best JavaScript code snippet using sinon

utilities.test.js

Source:utilities.test.js Github

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...121 });122 describe('query rejects', () => {123 it('bubbles error @unit', async () => {124 const error = Error();125 const query = sinon.fake.rejects(error);126 const model = { findByPk: query };127 const { strictFindByKey } = proxyquire(REQUIRE_PATH, {128 './utilities.js': {129 createOrKeepTransaction: ignore,130 rollbackOrKeepTransaction: ignore,131 },132 });133 await assert.isRejected(strictFindByKey(model), error);134 });135 it('rolls back transaction @unit', async () => {136 const query = sinon.fake.rejects();137 const rollback = sinon.fake.resolves();138 const model = { findByPk: query };139 const { strictFindByKey } = proxyquire(REQUIRE_PATH, {140 './utilities.js': {141 createOrKeepTransaction: ignore,142 rollbackOrKeepTransaction: rollback,143 },144 });145 try {146 await strictFindByKey(model);147 } catch {} // eslint-disable-line no-empty148 assert.ok(rollback.called);149 });150 });151 });152 describe('update by key', () => {153 describe('find resolves', () => {154 describe('update resolves', () => {155 it('commits transaction @unit', async () => {156 const commit = sinon.fake();157 const instance = () => ({ update: ignore });158 const model = { strictFindByKey: instance };159 const { updateByKey } = proxyquire(REQUIRE_PATH, {160 './utilities.js': {161 createOrKeepTransaction: ignore,162 commitOrKeepTransaction: commit,163 },164 });165 await updateByKey(model);166 assert.ok(commit.called);167 });168 it('returns the updated item @unit', async () => {169 const expected = {};170 const instance = () => ({ update: () => expected });171 const model = { strictFindByKey: instance };172 const { updateByKey } = proxyquire(REQUIRE_PATH, {173 './utilities.js': {174 createOrKeepTransaction: ignore,175 commitOrKeepTransaction: ignore,176 },177 });178 const result = await updateByKey(model);179 assert.strictEqual(result, expected);180 });181 });182 describe('update rejects', () => {183 it('rolls back transaction @unit', async () => {184 const instance = () => ({ update: sinon.fake.rejects() });185 const rollback = sinon.fake();186 const model = { strictFindByKey: instance };187 const { updateByKey } = proxyquire(REQUIRE_PATH, {188 './utilities.js': {189 createOrKeepTransaction: ignore,190 rollbackOrKeepTransaction: rollback,191 },192 });193 try {194 await updateByKey(model);195 } catch {} // eslint-disable-line no-empty196 assert.ok(rollback.called);197 });198 it('bubbles error @unit', async () => {199 const error = Error();200 const instance = () => ({201 update: sinon.fake.rejects(error),202 });203 const model = { strictFindByKey: instance };204 const { updateByKey } = proxyquire(REQUIRE_PATH, {205 './utilities.js': {206 createOrKeepTransaction: ignore,207 rollbackOrKeepTransaction: ignore,208 },209 });210 await assert.isRejected(updateByKey(model), error);211 });212 });213 });214 describe('find rejects', () => {215 it('rolls back transaction @unit', async () => {216 const rollback = sinon.fake();217 const rejects = sinon.fake.rejects();218 const model = { strictFindByKey: rejects };219 const { updateByKey } = proxyquire(REQUIRE_PATH, {220 './utilities.js': {221 createOrKeepTransaction: ignore,222 rollbackOrKeepTransaction: rollback,223 },224 });225 try {226 await updateByKey(model);227 } catch {} // eslint-disable-line no-empty228 assert.ok(rollback.called);229 });230 it('bubbles error @unit', async () => {231 const error = Error();232 const rejects = sinon.fake.rejects(error);233 const model = { strictFindByKey: rejects };234 const { updateByKey } = proxyquire(REQUIRE_PATH, {235 './utilities.js': {236 createOrKeepTransaction: ignore,237 rollbackOrKeepTransaction: ignore,238 },239 });240 await assert.isRejected(updateByKey(model), error);241 });242 });243 });244 describe('delete by key', () => {245 describe('find resolves', () => {246 describe('destroy resolves', () => {247 it('commits transaction @unit', async () => {248 const commit = sinon.fake();249 const instance = () => ({ destroy: ignore });250 const model = { strictFindByKey: instance };251 const { deleteByKey } = proxyquire(REQUIRE_PATH, {252 './utilities.js': {253 createOrKeepTransaction: ignore,254 commitOrKeepTransaction: commit,255 },256 });257 await deleteByKey(model);258 assert.ok(commit.called);259 });260 it('returns destroyed item @unit', async () => {261 const expected = {};262 const instance = () => ({ destroy: () => expected });263 const model = { strictFindByKey: instance };264 const { deleteByKey } = proxyquire(REQUIRE_PATH, {265 './utilities.js': {266 createOrKeepTransaction: ignore,267 commitOrKeepTransaction: ignore,268 },269 });270 const result = await deleteByKey(model);271 assert.strictEqual(result, expected);272 });273 });274 describe('destroy rejects', () => {275 it('rolls back transaction @unit', async () => {276 const instance = () => ({ destroy: sinon.fake.rejects() });277 const rollback = sinon.fake();278 const model = { strictFindByKey: instance };279 const { deleteByKey } = proxyquire(REQUIRE_PATH, {280 './utilities.js': {281 createOrKeepTransaction: ignore,282 rollbackOrKeepTransaction: rollback,283 },284 });285 try {286 await deleteByKey(model);287 } catch {} // eslint-disable-line no-empty288 assert.ok(rollback.called);289 });290 it('bubbles error @unit', async () => {291 const error = Error();292 const instance = () => ({293 destroy: sinon.fake.rejects(error),294 });295 const model = { strictFindByKey: instance };296 const { deleteByKey } = proxyquire(REQUIRE_PATH, {297 './utilities.js': {298 createOrKeepTransaction: ignore,299 rollbackOrKeepTransaction: ignore,300 },301 });302 await assert.isRejected(deleteByKey(model), error);303 });304 });305 });306 describe('find rejects', () => {307 it('rolls back transaction @unit', async () => {308 const rollback = sinon.fake();309 const rejects = sinon.fake.rejects();310 const model = { strictFindByKey: rejects };311 const { deleteByKey } = proxyquire(REQUIRE_PATH, {312 './utilities.js': {313 createOrKeepTransaction: ignore,314 rollbackOrKeepTransaction: rollback,315 },316 });317 try {318 await deleteByKey(model);319 } catch {} // eslint-disable-line no-empty320 assert.ok(rollback.called);321 });322 it('bubbles error @unit', async () => {323 const error = Error();324 const rejects = sinon.fake.rejects(error);325 const model = { strictFindByKey: rejects };326 const { deleteByKey } = proxyquire(REQUIRE_PATH, {327 './utilities.js': {328 createOrKeepTransaction: ignore,329 rollbackOrKeepTransaction: ignore,330 },331 });332 await assert.isRejected(deleteByKey(model), error);333 });334 });335 });...

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mpesa.test.js

Source:mpesa.test.js Github

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...51 it('should throw an error if parameters are invalid', () => {52 sinon.replace(53 logic,54 'mpesaExpressRequest',55 sinon.fake.rejects('Bad Request')56 );57 return expect(58 mpesa.mpesaExpressRequest(59 100,60 254712345678,61 123456,62 'passkey',63 'CustomerPayBillOnline',64 'reference',65 'description',66 'http://callbackurl.com'67 )68 ).to.eventually.be.rejectedWith('Bad Request');69 });70 });71 describe('mpesaExpressQuery()', () => {72 afterEach(() => {73 sinon.restore();74 });75 it('should return a successful response', () => {76 sinon.replace(77 logic,78 'mpesaExpressQuery',79 sinon.fake.resolves({80 resultCode: '1032',81 resultDescription: '[STK_CB - ]Request cancelled by user'82 })83 );84 return expect(mpesa.mpesaExpressQuery()).to.eventually.deep.equal({85 resultCode: '1032',86 resultDescription: '[STK_CB - ]Request cancelled by user'87 });88 });89 it('should throw an error if parameters are invalid', () => {90 sinon.replace(91 logic,92 'mpesaExpressQuery',93 sinon.fake.rejects('Bad Request')94 );95 return expect(mpesa.mpesaExpressQuery()).to.eventually.be.rejectedWith(96 'Bad Request'97 );98 });99 });100 describe('c2bRegisterUrl()', () => {101 afterEach(() => {102 sinon.restore();103 });104 it('should return a successful response', () => {105 sinon.replace(106 logic,107 'c2bRegisterUrl',108 sinon.fake.resolves({ responseDescription: 'success' })109 );110 return expect(111 mpesa.c2bRegisterUrl(112 'http://validationurl.com',113 'http://confirmationurl.com',114 'Completed'115 )116 ).to.eventually.deep.equal({117 responseDescription: 'success'118 });119 });120 it('should throw an error if parameters are invalid', () => {121 sinon.replace(logic, 'c2bRegisterUrl', sinon.fake.rejects('Bad Request'));122 return expect(123 mpesa.c2bRegisterUrl(124 'http://validationurl.com',125 'http://confirmationurl.com',126 'Completed'127 )128 ).to.eventually.be.rejectedWith('Bad Request');129 });130 });131 describe('c2bSimulateTransaction()', () => {132 afterEach(() => {133 sinon.restore();134 });135 it('should return a successful response', () => {136 sinon.replace(137 logic,138 'c2bSimulateTransaction',139 sinon.fake.resolves({140 conversationId: 'conversationId',141 originatorConversationId: 'originatorConversationId',142 responseDescription: 'Accept the service request successfully.'143 })144 );145 return expect(146 mpesa.c2bSimulateTransaction(100, 254712345678, 'billRef')147 ).to.eventually.deep.equal({148 conversationId: 'conversationId',149 originatorConversationId: 'originatorConversationId',150 responseDescription: 'Accept the service request successfully.'151 });152 });153 it('should throw an error if parameters are invalid', () => {154 sinon.replace(155 logic,156 'c2bSimulateTransaction',157 sinon.fake.rejects('Bad Request')158 );159 return expect(160 mpesa.c2bSimulateTransaction(100, 254712345678, 'billRef')161 ).to.eventually.be.rejectedWith('Bad Request');162 });163 });164 describe('b2cPaymentRequest()', () => {165 afterEach(() => {166 sinon.restore();167 });168 it('should return a successful response', () => {169 sinon.replace(170 logic,171 'b2cPaymentRequest',172 sinon.fake.resolves({173 conversationId: 'conversationId',174 originatorConversationId: 'originatorConversationId',175 responseDescription: 'Accept the service request successfully.'176 })177 );178 return expect(179 mpesa.b2cPaymentRequest(100, 254712345678, 'billRef')180 ).to.eventually.deep.equal({181 conversationId: 'conversationId',182 originatorConversationId: 'originatorConversationId',183 responseDescription: 'Accept the service request successfully.'184 });185 });186 it('should throw an error if parameters are invalid', () => {187 sinon.replace(188 logic,189 'b2cPaymentRequest',190 sinon.fake.rejects('Bad Request')191 );192 return expect(193 mpesa.b2cPaymentRequest(100, 254712345678, 'billRef')194 ).to.eventually.be.rejectedWith('Bad Request');195 });196 });197 describe('accountBalanceRequest()', () => {198 afterEach(() => {199 sinon.restore();200 });201 it('should return a successful response', () => {202 sinon.replace(203 logic,204 'accountBalanceRequest',205 sinon.fake.resolves({206 conversationId: 'conversationId',207 originatorConversationId: 'originatorConversationId',208 responseDescription: 'Accept the service request successfully.'209 })210 );211 return expect(212 mpesa.accountBalanceRequest(100, 254712345678, 'billRef')213 ).to.eventually.deep.equal({214 conversationId: 'conversationId',215 originatorConversationId: 'originatorConversationId',216 responseDescription: 'Accept the service request successfully.'217 });218 });219 it('should throw an error if parameters are invalid', () => {220 sinon.replace(221 logic,222 'accountBalanceRequest',223 sinon.fake.rejects('Bad Request')224 );225 return expect(226 mpesa.accountBalanceRequest(100, 254712345678, 'billRef')227 ).to.eventually.be.rejectedWith('Bad Request');228 });229 });230 describe('transactionStatusRequest()', () => {231 afterEach(() => {232 sinon.restore();233 });234 it('should return a successful response', () => {235 sinon.replace(236 logic,237 'transactionStatusRequest',238 sinon.fake.resolves({239 conversationId: 'conversationId',240 originatorConversationId: 'originatorConversationId',241 responseDescription: 'Accept the service request successfully.'242 })243 );244 return expect(245 mpesa.transactionStatusRequest(246 'transactionId',247 4,248 'initiatorName',249 'initiatorPassword',250 'remarks',251 'occassion',252 'http://resulturl.com',253 'http://timeouturl.com'254 )255 ).to.eventually.deep.equal({256 conversationId: 'conversationId',257 originatorConversationId: 'originatorConversationId',258 responseDescription: 'Accept the service request successfully.'259 });260 });261 it('should throw an error if parameters are invalid', () => {262 sinon.replace(263 logic,264 'transactionStatusRequest',265 sinon.fake.rejects('Bad Request')266 );267 return expect(268 mpesa.transactionStatusRequest(269 'transactionId',270 4,271 'initiatorName',272 'initiatorPassword',273 'remarks',274 'occassion',275 'http://resulturl.com',276 'http://timeouturl.com'277 )278 ).to.eventually.be.rejectedWith('Bad Request');279 });280 });281 describe('reversalRequest()', () => {282 afterEach(() => {283 sinon.restore();284 });285 it('should return a successful response', () => {286 sinon.replace(287 logic,288 'reversalRequest',289 sinon.fake.resolves({290 conversationId: 'conversationId',291 originatorConversationId: 'originatorConversationId',292 responseDescription: 'Accept the service request successfully.'293 })294 );295 return expect(296 mpesa.reversalRequest(297 'transactionId',298 'initiatorName',299 'initiatorPassword',300 'remarks',301 'occassion',302 'http://resulturl.com',303 'http://timeouturl.com'304 )305 ).to.eventually.deep.equal({306 conversationId: 'conversationId',307 originatorConversationId: 'originatorConversationId',308 responseDescription: 'Accept the service request successfully.'309 });310 });311 it('should throw an error if parameters are invalid', () => {312 sinon.replace(313 logic,314 'reversalRequest',315 sinon.fake.rejects('Bad Request')316 );317 return expect(318 mpesa.reversalRequest(319 'transactionId',320 'initiatorName',321 'initiatorPassword',322 'remarks',323 'occassion',324 'http://resulturl.com',325 'http://timeouturl.com'326 )327 ).to.eventually.be.rejectedWith('Bad Request');328 });329 });...

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migrationSpec.mjs.js

Source:migrationSpec.mjs.js Github

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...48 account3: {49 "dkim.enable": 1,50 },51 }),52 getDkimKeys: sinon.fake.rejects("not available"),53 getSignRulesUser: sinon.fake.rejects("not available"),54 };55 await migratePrefs();56 expect(prefs["arh.read"]).to.be.equal(true);57 expect(prefs["dkim.enable"]).to.be.equal(false);58 expect(prefs["dns.nameserver"]).to.be.equal("1.1.1.1");59 expect(prefs["key.storing"]).to.be.equal(2);60 expect(prefs.saveResult).to.be.equal(true);61 // renamed62 expect(prefs["policy.signRules.autoAddRule.enable"]).to.be.equal(true);63 expect(prefs["policy.signRules.error.wrong_sdid.asWarning"]).to.be.equal(true);64 // type changed65 expect(prefs["dns.proxy.port"]).to.be.equal(42);66 expect(prefs["account.dkim.enable"]("account1")).to.be.equal(false);67 expect(prefs["account.arh.read"]("account1")).to.be.equal(false);68 expect(prefs["account.arh.allowedAuthserv"]("account1")).to.be.equal("foo.com");69 expect(prefs["account.dkim.enable"]("account3")).to.be.equal(true);70 expect(prefs["account.arh.read"]("account3")).to.be.equal(true);71 expect(prefs["account.arh.allowedAuthserv"]("account3")).to.be.equal("");72 });73 it("errors should be ignored", async function () {74 browser.migration = {75 getUserPrefs: sinon.fake.resolves({76 "arh.read": true,77 "dkim.enable": "this should be a boolean",78 "dns.nameserver": "1.1.1.1",79 "this.pref.does.not.exist": "foo",80 "key.storing": 2,81 }),82 getDkimKeys: sinon.fake.rejects("not available"),83 getAccountPrefs: sinon.fake.resolves({84 account1: {85 "dkim.enable": true,86 "arh.read": false,87 "arh.allowedAuthserv": 1,88 },89 account3: {90 "dkim.enable": 2,91 },92 }),93 getSignRulesUser: sinon.fake.rejects("not available"),94 };95 await migratePrefs();96 expect(prefs["arh.read"]).to.be.equal(true);97 expect(prefs["dns.nameserver"]).to.be.equal("1.1.1.1");98 expect(prefs["key.storing"]).to.be.equal(2);99 // prefs with wrong type should have default value100 expect(prefs["dkim.enable"]).to.be.equal(true);101 expect(prefs["account.dkim.enable"]("account1")).to.be.equal(true);102 expect(prefs["account.arh.read"]("account1")).to.be.equal(true);103 expect(prefs["account.arh.allowedAuthserv"]("account1")).to.be.equal("");104 expect(prefs["account.dkim.enable"]("account3")).to.be.equal(false);105 });106 it("skip migration if preferences already exist", async function () {107 browser.migration = {108 getUserPrefs: sinon.fake.resolves({109 "arh.read": true,110 }),111 getAccountPrefs: sinon.fake.resolves({112 account1: {113 "arh.allowedAuthserv": "foo.com",114 },115 }),116 getDkimKeys: sinon.fake.rejects("not available"),117 getSignRulesUser: sinon.fake.rejects("not available"),118 };119 await prefs.setValue("dkim.enable", true);120 await migratePrefs();121 expect(prefs["arh.read"]).to.be.equal(false);122 expect(prefs["account.arh.allowedAuthserv"]("account1")).to.be.equal("");123 });124 it("don't skip migration if only sign rules exist", async function () {125 browser.migration = {126 getUserPrefs: sinon.fake.resolves({127 "arh.read": true,128 }),129 getAccountPrefs: sinon.fake.resolves({130 account1: {131 "arh.allowedAuthserv": "foo.com",132 },133 }),134 getDkimKeys: sinon.fake.rejects("not available"),135 getSignRulesUser: sinon.fake.rejects("not available"),136 };137 await SignRules.addException("foo@bar.com");138 await migratePrefs();139 expect(prefs["arh.read"]).to.be.equal(true);140 expect(prefs["account.arh.allowedAuthserv"]("account1")).to.be.equal("foo.com");141 });142 });143 describe("migration of keys", function () {144 before(function () {145 if (!hasWebExtensions) {146 // eslint-disable-next-line no-invalid-this147 this.skip();148 }149 });150 beforeEach(async function () {151 await KeyDb.clear();152 browser.migration = {153 getUserPrefs: sinon.fake.rejects("not available"),154 getAccountPrefs: sinon.fake.rejects("not available"),155 getDkimKeys: sinon.fake.resolves({156 maxId: 1,157 keys: [158 {159 id: 1,160 sdid: "foo.com",161 selector: "selector",162 key: "key",163 insertedAt: "2021-02-03",164 lastUsedAt: "2021-02-03",165 secure: false,166 },167 ],168 }),169 getSignRulesUser: sinon.fake.rejects("not available"),170 };171 });172 it("normal migration of keys", async function () {173 await migrateKeyStore();174 const res = await KeyDb.fetch("foo.com", "selector");175 expect(res?.key).is.equal("key");176 });177 it("skip migration if keys already exist", async function () {178 await KeyDb.store("bar.com", "selector", "key2", false);179 await migrateKeyStore();180 const res = await KeyDb.fetch("foo.com", "selector");181 expect(res).is.null;182 });183 it("don't skip migration of keys if only preferences exist", async function () {184 await prefs.setValue("dkim.enable", true);185 await migrateKeyStore();186 const res = await KeyDb.fetch("foo.com", "selector");187 expect(res?.key).is.equal("key");188 });189 });190 describe("migration of sign rules", function () {191 before(function () {192 if (!hasWebExtensions) {193 // eslint-disable-next-line no-invalid-this194 this.skip();195 }196 });197 beforeEach(async function () {198 await SignRules.clearRules();199 browser.migration = {200 getUserPrefs: sinon.fake.rejects("not available"),201 getAccountPrefs: sinon.fake.rejects("not available"),202 getDkimKeys: sinon.fake.rejects("not available"),203 getSignRulesUser: sinon.fake.resolves({204 maxId: 1,205 rules: [206 {207 id: 1,208 domain: "foo.com",209 listId: "",210 addr: "*",211 sdid: "foo.com",212 type: SignRules.TYPE.ALL,213 priority: SignRules.PRIORITY.USERINSERT_RULE_ALL,214 enabled: true,215 },216 ],...

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1const sinon = require("sinon");2const chai = require("chai");3const expect = chai.expect;4const chaiAsPromised = require("chai-as-promised");5const sinonChai = require("sinon-chai");6chai.use(chaiAsPromised);7chai.use(sinonChai);8const fake = sinon.fake.rejects("error");9fake()10 .then((data) => {11 console.log("data", data);12 })13 .catch((err) => {14 console.log("err", err);15 });16const sinon = require("sinon");17const chai = require("chai");18const expect = chai.expect;19const chaiAsPromised = require("chai-as-promised");20const sinonChai = require("sinon-chai");21chai.use(chaiAsPromised);22chai.use(sinonChai);23const fake = sinon.fake.resolves("data");24fake()25 .then((data) => {26 console.log("data", data);27 })28 .catch((err) => {29 console.log("err", err);30 });31const sinon = require("sinon");32const chai = require("chai");33const expect = chai.expect;34const chaiAsPromised = require("chai-as-promised");35const sinonChai = require("sinon-chai");36chai.use(chaiAsPromised);37chai.use(sinonChai);38const fake = sinon.fake.yields("error", "data");39fake((err, data) => {40 console.log("err", err);41 console.log("data", data);42});

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1const sinon = require('sinon');2const chai = require('chai');3const sinonChai = require('sinon-chai');4const expect = chai.expect;5chai.use(sinonChai);6describe('sinon fake rejects', () => {7 it('should fake a promise rejection', () => {8 const fake = sinon.fake.rejects(new Error('fake error'));9 return fake().catch((err) => {10 expect(err).to.exist;11 expect(err.message).to.equal('fake error');12 });13 });14});15- `sinon.useFakeTimers([now, toFake])`16- `clock.tick(ms)`17- `clock.runAll()`18- `clock.runToLast()`19- `clock.restore()`20const sinon = require('sinon');21const chai = require('chai');22const sinonChai = require('sinon-chai');23const expect = chai.expect;24chai.use(sinonChai);25describe('sinon fake timers', () => {26 it('should fake a timer', () => {27 const clock = sinon.useFakeTimers();28 const callback = sinon.fake();29 setTimeout(callback, 1000);30 expect(callback).to.not.have.been.called;31 clock.tick(1000);32 expect(callback).to.have.been.called;33 clock.restore();34 });35});36- `sinon.useFakeServer()`37- `server.respondWith([status, headers, body])`38- `server.respond()`39- `server.restore()`40const sinon = require('sinon');41const chai = require('chai');42const sinonChai = require('sinon-chai');43const expect = chai.expect;44chai.use(sinonChai);45describe('sinon fake server', () => {46 it('should fake a server', () => {47 const server = sinon.useFakeServer();48 const callback = sinon.fake();49 const xhr = new XMLHttpRequest();50 xhr.addEventListener('load

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1const sinon = require('sinon');2const assert = require('assert');3const fake = sinon.fake.rejects(new Error('fake error'));4fake().catch(error => {5 assert(error.message === 'fake error');6});7const sinon = require('sinon');8const assert = require('assert');9const fake = sinon.fake.rejects(new Error('fake error'));10fake().catch(error => {11 assert(error.message === 'fake error');12});13const sinon = require('sinon');14const assert = require('assert');15const fake = sinon.fake.rejects(new Error('fake error'));16fake().catch(error => {17 assert(error.message === 'fake error');18});19const sinon = require('sinon');20const assert = require('assert');21const fake = sinon.fake.rejects(new Error('fake error'));22fake().catch(error => {23 assert(error.message === 'fake error');24});25const sinon = require('sinon');26const assert = require('assert');27const fake = sinon.fake.rejects(new Error('fake error'));28fake().catch(error => {29 assert(error.message === 'fake error');30});31const sinon = require('sinon');32const assert = require('assert');33const fake = sinon.fake.rejects(new Error('fake error'));34fake().catch(error => {35 assert(error.message === 'fake error');36});37const sinon = require('sinon');38const assert = require('assert');39const fake = sinon.fake.rejects(new Error('fake error'));40fake().catch(error => {41 assert(error.message === 'fake error');42});43const sinon = require('sinon');44const assert = require('assert');45const fake = sinon.fake.rejects(new Error('fake error'));46fake().catch(error => {47 assert(error.message === 'fake error');48});49const sinon = require('sinon');

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1const sinon = require('sinon');2const assert = require('assert');3const { fake } = require('sinon');4const { rejects } = require('assert');5const myDatabase = {6 save: function (data, cb) {7 cb(null, true);8 },9 get: function (id, cb) {10 cb(null, { id: id });11 }12};13const myService = {14 save: function (data) {15 myDatabase.save(data, function (err, result) {16 if (err) {17 throw err;18 } else {19 console.log("Saved");20 }21 });22 },23 get: function (id) {24 myDatabase.get(id, function (err, result) {25 if (err) {26 throw err;27 } else {28 console.log("Got");29 }30 });31 }32};33describe('myService', function () {34 describe('#save()', function () {35 it('should save without error', function () {36 const callback = sinon.fake();37 myDatabase.save = sinon.fake.yields(null, true);38 myService.save({ id: 1 }, callback);39 assert(myDatabase.save.calledOnce);40 assert(callback.calledWith(null, true));41 });42 });43 describe('#get()', function () {44 it('should get without error', function () {45 const callback = sinon.fake();46 myDatabase.get = sinon.fake.yields(null, { id: 1 });47 myService.get(1, callback);48 assert(myDatabase.get.calledOnce);49 assert(callback.calledWith(null, { id: 1 }));50 });51 });52});53const sinon = require('sinon');54const assert = require('assert');55const { fake } = require('sinon');56const { rejects } = require('assert');57const myDatabase = {58 save: function (data, cb) {59 cb(null, true);60 },61 get: function (id, cb) {62 cb(null, { id: id });63 }64};65const myService = {66 save: function (data) {67 myDatabase.save(data, function (err, result) {68 if (err) {69 throw err;70 } else {71 console.log("Saved");72 }73 });74 },75 get: function (id) {76 myDatabase.get(id,

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1var fake = require('sinon').fake;2var fakeRejects = fake.rejects('Error');3fakeRejects.then(function (result) {4 console.log(result);5}, function (error) {6 console.log(error);7});8var fake = require('sinon').fake;9var fakeResolves = fake.resolves('Success');10fakeResolves.then(function (result) {11 console.log(result);12}, function (error) {13 console.log(error);14});15var fake = require('sinon').fake;16var fakeYields = fake.yields('Error', 'Success');17fakeYields(function (error, result) {18 console.log(error, result);19});20var fake = require('sinon').fake;21var fakeYieldsTo = fake.yieldsTo('callback', 'Error', 'Success');22fakeYieldsTo({ callback: function (error, result) { console.log(error, result); } });23var fake = require('sinon').fake;24var fakeWithArgs = fake.withArgs(1, 2);25fakeWithArgs(1, 2);26fakeWithArgs(3, 4);27console.log(fakeWithArgs.callCount);28var fake = require('sinon').fake;29var fakeWithArgs = fake.withArgs(1, 2);30fakeWithArgs(1, 2);31fakeWithArgs(3, 4);32console.log(fakeWithArgs.callCount);33var fake = require('sinon').fake;34var fakeWithArgs = fake.withArgs(1, 2);35fakeWithArgs(1, 2);36fakeWithArgs(3, 4);37console.log(fakeWithArgs.callCount);38var fake = require('sinon').fake;39var fakeWithArgs = fake.withArgs(1, 2);40fakeWithArgs(1, 2);41fakeWithArgs(3, 4);

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Using AI Code Generation

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1const sinon = require('sinon');2const fake = sinon.fake.returns(Promise.reject(new Error('error')));3const fake2 = sinon.fake.returns(Promise.resolve('success'));4const test = async () => {5 try {6 const result = await fake();7 console.log(result);8 } catch (err) {9 console.log(err);10 }11};12const test2 = async () => {13 try {14 const result = await fake2();15 console.log(result);16 } catch (err) {17 console.log(err);18 }19};20test();21test2();

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Automation Testing Tutorials

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LambdaTest Learning Hubs:

YouTube

You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.

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