Sample Pact Generation using Jest

sample-jest-pact.js

import { Pact } from '@pact-foundation/pact';
import path from 'path';
import axios from 'axios';

describe('sampleProvider', () => {
  const port = 1234;
  const providerBaseUrl = `http://localhost:${port}`;
  const provider = new Pact({
    consumer: 'sample-consumer',
    provider: 'sample-provider',
    port,
    dir: path.resolve(process.cwd(), '.contracts'),
    pactfileWriteMode: 'update',
  });

  beforeAll(async () => {
    await provider.setup();
  });

  afterAll(async () => {
    await provider.finalize();
  });

  it('returns the expected response', async () => {
    await provider.addInteraction({
      uponReceiving: 'a request to the base endpoint',
      withRequest: {
        method: 'GET',
        path: '/',
      },
      willRespondWith: {
        status: 200,
        body: {
          message: 'Hello world!',
        },
      },
      state: undefined, // State handlers are not required but I think the type definition in the library is buggy
    });

    // Execute your call
    await axios.get(providerBaseUrl);

    await provider.verify();
  });
});