使用mockserver来进行http接口mock

前言

进行单元测试时，必须要mock掉第三方的依赖调用，而mockserver提供了足够的api来支持这种http的mock，现在简单介绍如何使用mockserver进行http接口mock。

依赖

• mockserver依赖
  1. <dependency>
  2. <groupId>org.mock-server</groupId>
  3. <artifactId>mockserver-netty</artifactId>
  4. <version>3.10.4</version>
  5. </dependency>
• httpclient依赖

1. <dependency>
2. <groupId>org.apache.httpcomponents</groupId>
3. <artifactId>httpclient</artifactId>
4. <version>4.3.3</version>
5. </dependency>
7. <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore -->
8. <dependency>
9. <groupId>org.apache.httpcomponents</groupId>
10. <artifactId>httpcore</artifactId>
11. <version>4.3.2</version>
12. </dependency>

httpclient的版本可能会出现不一致的情况，抛出异常，以上的这个版本匹配是没有异常的组合。

举例

1. package com.yuliang.dubbo.service;
4. import org.apache.http.client.methods.CloseableHttpResponse;
5. import org.apache.http.client.methods.HttpGet;
6. import org.apache.http.impl.client.CloseableHttpClient;
7. import org.apache.http.impl.client.HttpClients;
8. import org.junit.Rule;
9. import org.junit.Test;
10. import org.mockserver.client.server.MockServerClient;
11. import org.mockserver.junit.MockServerRule;
13. import java.io.BufferedReader;
14. import java.io.IOException;
15. import java.io.InputStream;
16. import java.io.InputStreamReader;
18. import static org.hamcrest.CoreMatchers.equalTo;
19. import static org.hamcrest.MatcherAssert.assertThat;
20. import static org.mockserver.model.HttpRequest.request;
21. import static org.mockserver.model.HttpResponse.response;
23. /**
24. * Created by leo on 16/8/16.
25. */
26. public class MockServerTest {
28. @Rule
29. public MockServerRule server = new MockServerRule(this, 5000);
31. @Test
32. public void testMockServer() throws IOException {
33. MockServerClient mockClient = new MockServerClient("localhost", 5000);
34. String expected = "{ message: 'incorrect username and password combination' }";
36. mockClient.when(
37. request()
38. .withPath("/hello/John")
39. .withMethod("GET")
40. // .withHeader(new Header(HttpHeaders.ACCEPT, MediaType.TEXT_PLAIN))
41. // .withQueryStringParameter(new Parameter("my-token", "12345"))
42. ).respond(
43. response()
44. .withStatusCode(200)
45. .withBody(expected)
46. );
48. CloseableHttpClient client = HttpClients.createDefault();
49. HttpGet httpGet = new HttpGet("http://localhost:5000/hello/John");
50. CloseableHttpResponse response = client.execute(httpGet);
52. //验证输出是否是正确
53. InputStream content = response.getEntity().getContent();
54. InputStreamReader inputStreamReader = new InputStreamReader(content);
55. BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
56. String responseText = bufferedReader.readLine();
57. assertThat(responseText, equalTo(expected));
59. }
60. }

• mock http post请求

  1. @Test
  2. public void testPostMockServer() throws IOException {
  3. MockServerClient mockClient = new MockServerClient("localhost", 5000);
  4. String expected = "You have logged in successfully.";
  6. mockClient.when(
  7. request()
  8. .withPath("/hello/John")
  9. .withMethod("POST")
  10. .withHeader(new Header(HttpHeaders.ACCEPT, MediaType.TEXT_PLAIN))
  11. // .withQueryStringParameter(new Parameter("my-token", "12345"))
  12. .withBody("username=foo&password=123456")
  13. ).respond(
  14. response()
  15. .withStatusCode(200)
  16. .withBody(expected)
  17. );
  19. CloseableHttpClient client = HttpClients.createDefault();
  20. HttpPost httpPost = new HttpPost("http://localhost:5000/hello/John");
  21. httpPost.addHeader("Accept", "text/plain");
  22. ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
  23. nameValuePairs.add(new BasicNameValuePair("username", "foo"));
  24. nameValuePairs.add(new BasicNameValuePair("password", "123456"));
  25. httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
  26. CloseableHttpResponse response = client.execute(httpPost);
  28. //验证输出是否是正确
  29. InputStream content = response.getEntity().getContent();
  30. InputStreamReader inputStreamReader = new InputStreamReader(content);
  31. BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
  32. String responseText = bufferedReader.readLine();
  33. assertThat(responseText, equalTo(expected));
  35. }