Error with Typescript Pact.io test: PopsicleError: Unable to connect to

Question

预期： 运行 npm run pactTest 应生成协议文件 (JSON).

结果： 我收到 Unable to connect 错误。

Pact.io JavaScript implementation guide.

感谢任何关于我做错的想法或想法:)

错误

FAIL src/services/api/TotalPayout.test.pact.ts The API getUsersTotalPayout ✕ Should call getUsersTotalPayout and return an object with the total_payout (45ms)

● The API › getUsersTotalPayout › Should call getUsersTotalPayout and return an object with the total_payout

PopsicleError: Unable to connect to "http://127.0.0.1:12345/interactions" Caused by: Error: connect ECONNREFUSED 127.0.0.1:12345
 at Request.Object.<anonymous>.Request.error (node_modules/popsicle/src/request.ts:91:12)
  at ClientRequest.<anonymous> (node_modules/popsicle/src/index.ts:218:31)

package.json 脚本：

"pactTest": "export NODE_ENV=pactTest && jest --testRegex \"/*(.test.pact.ts)\" --runInBand --setupFiles ./pactSetup.ts --setupTestFrameworkScriptFile ./pactTestWrapper.ts",

我的src/pactSetup.ts文件

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

// @ts-ignore
global.provider = new Pact({
  port: 1234,
  log: path.resolve(process.cwd(), 'logs', 'mockserver-integration.log'),
  dir: path.resolve(process.cwd(), 'pacts'),
  spec: 2,
  cors: true,
  pactfileWriteMode: 'update',
  consumer: 'Exchange',
  provider: 'LP Service'
});

我的src/pactTestWrapper.ts

jasmine.DEFAULT_TIMEOUT_INTERVAL = 10000; // This is to give the pact mock server time to start

// @ts-ignore
beforeAll(() => provider.setup()); // Create mock provider
// @ts-ignore
afterEach(() => provider.verify()); // Ensure the mock provider verifies expected interactions for each test
// @ts-ignore
afterAll(() => provider.finalize()); // Tear down the mock and write the pact

测试：src/services/api/TotalPayout.test.pact.ts

// @ts-ignore
import path from 'path';
import { Pact } from '@pact-foundation/pact';
import { getTotalPayout } from './apiPayout';

const port = 12345;
const endpoint = '/frontoffice/api/get-total-payout';

const EXPECTED_BODY = {
  total_payout: 100.21,
};

const userId = 'foo';

const provider = new Pact({
  port,
  log: path.resolve(process.cwd(), 'logs', 'mockserver-integration.log'),
  dir: path.resolve(process.cwd(), 'pacts'),
  spec: 2,
  consumer: 'Exchange',
  provider: 'LP Service',
  pactfileWriteMode: 'merge'
});

describe('The API', () => {
  // Copy this block once per interaction under test
  describe('getUsersTotalPayout', () => {
    beforeEach(() => {
      const interaction = {
        uponReceiving: 'a GET request with a user id',
        withRequest: {
          method: 'GET',
          path: endpoint,
          headers: {
            Accept: 'application/json',
          },
        },
        willRespondWith: {
          status: 200,
          headers: {
            'Content-Type': 'application/json'
          },
          body: EXPECTED_BODY
        },
      };

      // @ts-ignore
      return provider.addInteraction(interaction);
    });

    // add expectations
    it('Should call getUsersTotalPayout and return an object with the total_payout', done => {
      getTotalPayout(userId)
        .then((response: any) => {
          expect(response).toEqual(EXPECTED_BODY);
        })
        .then(done);
    });
  });
});

api服务文件apiPayout.ts

// @ts-ignore
import axios, * as others from 'axios';

const endpoint = '/frontoffice/api/';

export const getTotalPayout = async (userId: string) => {
  const response = await axios.get(`${endpoint}get-total-payout`, { params: userId });
  return response.data;
};

来自模拟服务器-integration.log

I, [2018-09-19T11:07:41.259437 #79922]  INFO -- : Verifying - interactions matched
I, [2018-09-19T11:07:41.264440 #79922]  INFO -- : Cleared interactions

来自调试日志

20 error code ELIFECYCLE
21 error errno 1
22 error react-redux-starter-kit@1.0.0 pactTest: `export NODE_ENV=pactTest && jest --testRegex "/*(.test.pact.ts)" --runInBand --setupFiles ./pactSetup.ts --setupTestFrameworkScriptFile ./pactTestWrapper.ts`
22 error Exit status 1
23 error Failed at the react-redux-starter-kit@1.0.0 pactTest script.

更新

在 test.pact 文件中注释掉提供程序设置逻辑并重新运行 npm run pactTest 后，我得到以下信息：

console.error node_modules/@pact-foundation/pact/pact.js:110 Pact verification failed!

console.error node_modules/@pact-foundation/pact/pact.js:111 Actual interactions do not match expected interactions for mock MockService.

Missing requests: GET /frontoffice/api/liquidity-pool/get-total-payout

See /Users/leongaban/projects/trade.io/tradeio-front/logs/mockserver-integration.log for details.

和我更新的模拟服务器-intergration.log

I, [2018-09-19T14:12:19.128823 #82330]  INFO -- : Registered expected interaction GET /frontoffice/api/liquidity-pool/get-total-payout
D, [2018-09-19T14:12:19.129127 #82330] DEBUG -- : {
  "description": "a GET request with a user id",
  "request": {
    "method": "GET",
    "path": "/frontoffice/api/liquidity-pool/get-total-payout",
    "headers": {
      "Accept": "application/json"
    }
  },
  "response": {
    "status": 200,
    "headers": {
      "Content-Type": "application/json"
    },
    "body": {
      "total_payout": 100.21
    }
  }
}
W, [2018-09-19T14:12:19.139198 #82330]  WARN -- : Verifying - actual interactions do not match expected interactions. 
Missing requests:
    GET /frontoffice/api/liquidity-pool/get-total-payout


W, [2018-09-19T14:12:19.139254 #82330]  WARN -- : Missing requests:
    GET /frontoffice/api/liquidity-pool/get-total-payout

Answer 1

我可以指出的几个问题：

您似乎声明并启动了一个 pact 模拟服务器两次：在 src/pactSetup.ts 文件中以及在 TotalPayout.test.pact.ts 中，我不确定这是否是您的意图做。您可能希望避免在 TotalPayout 测试中声明提供者，而是您已经在全局范围内拥有 provider 对象作为测试框架设置文件的一部分。
在代码 apiPayout.ts 中，您指的是端点 URL，但是它向哪个端口发送请求？这个 API 调用最终应该被你正在启动的协议模拟提供者捕获。如果您调用的端口与模拟提供程序正在侦听的端口不同，您将永远无法访问它。
一个小吹毛求疵：/frontoffice/api/get-total-payout不是RESTful。您希望避免在 API 中包含 "get" 等动词，并为此使用正确的 HTTP 方法 (GET)。

Answer 2

不确定这是否是您的问题，但我的 writePact 和 finalize 顺序错了。我有：

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

而不是正确的顺序：

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

Error with Typescript Pact.io test: PopsicleError: Unable to connect to

Error with Typescript Pact.io test: PopsicleError: Unable to connect to

javascript

testing

typescript

reactjs

pact

更新