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How to use startMockServer method in pact-foundation-pact

Best JavaScript code snippet using pact-foundation-pact

hosts_bans.js

Source:hosts_bans.js

...24}25describe('requests:hosts-bans', function () {26  this.timeout(5 * 1000)27  it('should timeout after the specified time', async () => {28    const { timeoutEndpoint } = await startMockServer()29    try {30      await requests_.get(timeoutEndpoint, { timeout: 100 }).then(shouldNotBeCalled)31    } catch (err) {32      rethrowShouldNotBeCalledErrors(err)33      err.type.should.equal('request-timeout')34    }35  })36  it('should not re-request a host that just had a timeout', async () => {37    const { timeoutEndpoint, host } = await startMockServer()38    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.type.should.equal('request-timeout'))39    try {40      await requests_.get(timeoutEndpoint, { timeout: 100 }).then(shouldNotBeCalled)41    } catch (err) {42      rethrowShouldNotBeCalledErrors(err)43      err.message.should.startWith('temporary ban')44      err.context.host.should.equal(host)45      const { banTime, expire } = err.context.hostBanData46      banTime.should.equal(baseBanTime)47      should(expire > Date.now()).be.true()48      should(expire < Date.now() + baseBanTime).be.true()49    }50  })51  it('should retry after expiration of the ban', async () => {52    const { timeoutEndpoint } = await startMockServer()53    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.type.should.equal('request-timeout'))54    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.message.should.startWith('temporary ban'))55    await wait(baseBanTime + 100)56    try {57      await requests_.get(timeoutEndpoint, { timeout: 100 }).then(shouldNotBeCalled)58    } catch (err) {59      rethrowShouldNotBeCalledErrors(err)60      err.type.should.equal('request-timeout')61    }62  })63  it('should keep timeout data for the whole host', async () => {64    const { timeoutEndpoint } = await startMockServer()65    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.type.should.equal('request-timeout'))66    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.message.should.startWith('temporary ban'))67    await wait(baseBanTime + 100)68    try {69      await requests_.get(timeoutEndpoint, { timeout: 100 }).then(shouldNotBeCalled)70    } catch (err) {71      rethrowShouldNotBeCalledErrors(err)72      err.type.should.equal('request-timeout')73    }74  })75  it('should increase ban time on next failure', async () => {76    const { timeoutEndpoint } = await startMockServer()77    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.type.should.equal('request-timeout'))78    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.message.should.startWith('temporary ban'))79    await wait(baseBanTime + 100)80    const beforeReban = Date.now()81    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.type.should.equal('request-timeout'))82    try {83      await requests_.get(timeoutEndpoint, { timeout: 100 }).then(shouldNotBeCalled)84    } catch (err) {85      rethrowShouldNotBeCalledErrors(err)86      err.message.should.startWith('temporary ban')87      const { banTime, expire } = err.context.hostBanData88      banTime.should.equal(baseBanTime * banTimeIncreaseFactor)89      const execTimeMargin = 100090      should(expire > beforeReban).be.true()91      should(expire < (beforeReban + baseBanTime * banTimeIncreaseFactor + execTimeMargin)).be.true()92    }93  })94  it('should reset ban time after a successful request', async () => {95    const { timeoutEndpoint, noTimeoutEndpoint } = await startMockServer()96    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.type.should.equal('request-timeout'))97    await wait(baseBanTime + 100)98    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.type.should.equal('request-timeout'))99    await wait(baseBanTime * banTimeIncreaseFactor + 100)100    await requests_.get(noTimeoutEndpoint, { timeout: 100 })101    const beforeReban = Date.now()102    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.type.should.equal('request-timeout'))103    try {104      await requests_.get(timeoutEndpoint, { timeout: 100 }).then(shouldNotBeCalled)105    } catch (err) {106      rethrowShouldNotBeCalledErrors(err)107      err.message.should.startWith('temporary ban')108      const { banTime, expire } = err.context.hostBanData109      banTime.should.equal(baseBanTime)110      const execTimeMargin = 1000111      should(expire > Date.now()).be.true()112      should(expire < (beforeReban + baseBanTime + execTimeMargin)).be.true()113    }114  })115  it('should count simultaneous requests failures as only one', async () => {116    const { timeoutEndpoint } = await startMockServer()117    await Promise.all([118      requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.type.should.equal('request-timeout')),119      requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => err.type.should.equal('request-timeout'))120    ])121    await requests_.get(timeoutEndpoint, { timeout: 100 }).catch(err => {122      const { banTime } = err.context.hostBanData123      banTime.should.equal(baseBanTime)124    })125  })126  it('should not re-request a host that just had a 500 error', async () => {127    const { errorEndpoint, noTimeoutEndpoint, host } = await startMockServer()128    await requests_.get(errorEndpoint)129    .then(shouldNotBeCalled)130    .catch(err => err.statusCode.should.equal(500))131    await hostIsCurrentlyBanned({ host, noTimeoutEndpoint })132  })133  it('should not re-request a host that just returned html rather than json', async () => {134    const { htmlEndpoint, noTimeoutEndpoint, host } = await startMockServer()135    await requests_.get(htmlEndpoint)136    .then(shouldNotBeCalled)137    .catch(err => {138      err.name.should.equal('SyntaxError')139      err.context.statusCode.should.equal(200)140    })141    await hostIsCurrentlyBanned({ host, noTimeoutEndpoint })142  })143})144const hostIsCurrentlyBanned = async ({ host, noTimeoutEndpoint }) => {145  try {146    await requests_.get(noTimeoutEndpoint).then(shouldNotBeCalled)147  } catch (err) {148    rethrowShouldNotBeCalledErrors(err)...

client.ts

Source:client.ts

...29  mockServer?: Server;30  private app: Express;31  constructor() {32    super({33      // Gets populated in `startMockServer()`34      apiUrl: '',35      // Gets re-initialized for every test in `reset()`36      argv: [],37      authConfig: {},38      config: {},39      localConfig: {},40      stdin: new PassThrough(),41      stdout: new PassThrough(),42      stderr: new PassThrough(),43      output: new Output(new PassThrough()),44    });45    this.app = express();46    this.app.use(express.json());47    // play scenario48    this.app.use((req, res, next) => {49      this.scenario(req, res, next);50    });51    // catch requests that were not intercepted52    this.app.use((req, res) => {53      const message = `[Vercel API Mock] \`${req.method} ${req.path}\` was not handled.`;54      console.warn(message);55      res.status(404).json({56        error: {57          code: 'not_found',58          message,59        },60      });61    });62    this.scenario = Router();63  }64  reset() {65    this.stdin = new MockStream();66    this.stdout = new MockStream();67    this.stdout.setEncoding('utf8');68    this.stdout.end = () => {};69    this.stdout.pause();70    this.stderr = new MockStream();71    this.stderr.setEncoding('utf8');72    this.stderr.end = () => {};73    this.stderr.pause();74    this.stderr.isTTY = true;75    this._createPromptModule();76    this.output = new Output(this.stderr);77    this.argv = [];78    this.authConfig = {79      token: 'token_dummy',80    };81    this.config = {};82    this.localConfig = {};83    this.scenario = Router();84  }85  async startMockServer() {86    this.mockServer = createServer(this.app);87    await listen(this.mockServer, 0);88    const address = this.mockServer.address();89    if (!address || typeof address === 'string') {90      throw new Error('Unexpected http server address');91    }92    this.apiUrl = `http://127.0.0.1:${address.port}`;93  }94  stopMockServer() {95    return new Promise<void>((resolve, reject) => {96      if (!this.mockServer?.close) {97        reject(new Error(`mockServer did not exist when closing`));98        return;99      }100      this.mockServer.close(error => {101        if (error) {102          reject(error);103          return;104        }105        resolve();106      });107    });108  }109  setArgv(...argv: string[]) {110    this.argv = [process.execPath, 'cli.js', ...argv];111  }112  useScenario(scenario: Scenario) {113    this.scenario = scenario;114  }115}116export const client = new MockClient();117beforeAll(async () => {118  await client.startMockServer();119});120beforeEach(() => {121  client.reset();122});123afterAll(async () => {124  await client.stopMockServer();...

mockAPI.ts

Source:mockAPI.ts

1import * as express from 'express';2import { createReadStream } from 'fs';3import { port } from '../../src/environments/e2e';4const mock = startMockServer(port);5function sendJSON(filePath: string) {6  return (req: express.Request, res: express.Response) => {7    res.setHeader('Access-Control-Allow-Origin', '*');8    res.setHeader(9      'Access-Control-Allow-Headers',10      'Origin, X-Requested-With, Content-Type, Accept'11    );12    res.setHeader('Content-Type', 'application/json');13    createReadStream(`${__dirname}/${filePath}`).pipe(res);14  };15}16function startMockServer(port: number) {17  const mock = express();18  // Our mocked API calls:19  mock.get('/', (req, res) =>20    res.status(200).json({ message: 'E2E mock server is alive.' })21  );22  mock.get(23    '/bitpay.com/api/rates/',24    sendJSON('mocks/bitpay.com_api_rates.json')25  );26  mock.get(27    '/bitpay.com/api/rates/bch',28    sendJSON('mocks/bitpay.com_api_rates_bch.json')29  );30  mock.listen(port, () =>...

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