问题:消费者驱动的合同测试与契约

Question

我正在为一个大学项目写一个小程序。我想用协议框架测试一下。不幸的是，没有为我创建任何Pact.json文件，尽管没有错误。我的消费者用Javascript写的。下面您可以看到我的javascript文件、控制台输出和我的package.json文件的源代码：

const {Pact} = require('@pact-foundation/pact');
const axios = require('axios');
const path = require('path');


describe('Pact Consumer', () => {
    const provider = new Pact({
        consumer: 'consumer',
        provider: 'producer',
        host:'127.0.0.1',
        port: 1234,
        log: path.resolve(process.cwd(), 'logs', 'pact.log'),
        dir: path.resolve(process.cwd(), 'pacts'),
        logLevel: 'INFO',
    });

    beforeAll(() => provider.setup());
    jasmine.DEFAULT_TIMEOUT_INTERVAL = 10000;
    describe('consumer', () => {

        beforeEach
        (() =>

            provider.addInteraction({
                state: "valid date",
                uponReceiving: "a request for JSON data",
                withRequest: {
                    method: "GET",
                    path: "/test",
                    headers: { Accept: "application/json" },
                },
                willRespondWith: {
                    status: 200,
                    headers: { "Content-Type": "application/json" },
                    body:
                        {
                            name: 'Scherr',
                            surname: 'Valerian',
                            age: 28,
                        },

                },


            }),


        );

    });



    describe('test', () => {
        it('should return the correct data', () => {

          return  axios.get('localhost:1234/test').then(response => {
                expect(response[0].name).toBe('Scherr');
                expect(response[0].surname).toBe('Valerian');
                expect(response[0].age).toBe(28);
            }).then(()=> provider.verify())
        });
    });

    afterAll(() => {
        return provider.finalize();
    });
});

控制台输出：

   Error: getaddrinfo ENOTFOUND 1234
Expected :
Actual   :
<Click to see difference>

error properties: Object({ errno: 'ENOTFOUND', code: 'ENOTFOUND', syscall: 'getaddrinfo', hostname: '1234', config: Object({ url: 'localhost:1234/test', method: 'get', headers: Object({ Accept: 'application/json, text/plain, */*', User-Agent: 'axios/0.19.2' }), transformRequest: [ Function ], transformResponse: [ Function ], timeout: 0, adapter: Function, xsrfCookieName: 'XSRF-TOKEN', xsrfHeaderName: 'X-XSRF-TOKEN', maxContentLength: -1, validateStatus: Function, data: undefined }), request: Writable({ _writableState: WritableState({ objectMode: false, highWaterMark: 16384, finalCalled: false, needDrain: false, ending: false, ended: false, finished: false, destroyed: false, decodeStrings: true, defaultEncoding: 'utf8', length: 0, writing: false, corked: 0, sync: true, bufferProcessing: false, onwrite: Function, writecb: null, writelen: 0, afterWriteTickInfo: null, bufferedRequest: null, lastBufferedRequest: null, pendingcb: 0, prefinished: false, errorEmitted: false, emitClose: true, autoDestroy: false ...
Error: getaddrinfo ENOTFOUND 1234
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:64:26)

package.json：

{
  "name": "webservice",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "jasmine"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@pact-foundation/pact": "^9.11.0",
    "@pact-foundation/pact-node": "^10.9.5",
    "axios": "^0.19.2",
    "jasmine": "^3.5.0"
  },
  "devDependencies": {
    "pact": "^4.3.2"
  }
}

我非常感谢您的帮助和事先的感谢

Answer 1

这里没有日志我无法判断，但有一件事是肯定的:您对axios.get和provider.verify的调用是承诺的，而且是不正确的，这意味着某些事情的执行将不正常，或者根本不会执行。

简单地用return作为前缀应该可以解决这个问题。

见https://github.com/pact-foundation/pact-js#test-fails-when-it-should-pass。

Answer 2

我也有过类似的问题。将provider config上的provider config属性设置为true完成了我的工作。

在使用node-fetch而不是axios时，我似乎没有这个问题。