使用MockMvc测试带有异步方法所踩的坑及解决办法

首先说一下怎样使用MockMvc进行单元测试

第一步是新建一个TestParent类，里面配置好公共的配置，如下所示。

package com.systoon.reportApi;


import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.hazelcast.aws.impl.Constants;
import com.systoon.util.ReadProperties;
import org.junit.Test;
import org.springframework.test.context.ActiveProfiles;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;
import org.springframework.test.context.web.WebAppConfiguration;
@ActiveProfiles("test")
@WebAppConfiguration
@ContextConfiguration(locations = {
//        "classpath*:/applicationContext-disconf.xml",
        "classpath*:/applicationContext.xml",
        "classpath*:/springmvc.xml"
})
public class TestParent extends AbstractJUnit4SpringContextTests {
    public static final Gson GSON = new GsonBuilder().setDateFormat(Constants.DATE_FORMAT).create();
    public static final String INNER_KEY = ReadProperties.getProp("inner_key");

    @Test
    public void test(){

    }
}

第二步：写测试类进行测试

package com.systoon.reportApi;

import org.junit.Before;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.ResultActions;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

/**
 * Created  by 600262 on 2017/11/16.
 */
public class ReportPost extends TestParent {

    @Autowired
    private WebApplicationContext wac;
    private MockMvc mockMvc;

    @Before
    public void setup() {
        mockMvc = MockMvcBuilders.webAppContextSetup(wac).build();
    }

    //更新个人名片举报
    @Test
    public void testReport20() {
        try {
            ResultActions perform = mockMvc.perform(post("/inner/updateReport?authSign=C8363025-BDFE-409F-8C08-8DABEBC18CA4")
                    .contentType(MediaType.APPLICATION_JSON).content("{\"feedIllegalInput\":{\"closureTime\":1,\"reportFeed\":\"c_1500459436330003\",\"shieldFieldList\":[{\"fieldName\":\"nickname\",\"fieldValue\":\"小幸运\"},{\"fieldId\":510,\"fieldName\":\"洛阳\",\"fieldValue\":\"王世充\"}]},\n" +
                            "\"handlePersonId\":374771,\n" +
                            "\"handlePersonName\":\"测试者\",\n" +
                            "\"handleReason\":\"这名片不合法\",\n" +
                            "\"illegalType\":16,\n" +
                            "\"reportId\":5105100540948672,\n" +
                            "\"type\":1\n" +
                            "}"))
                    .andExpect(status().isOk())
                    .andExpect(jsonPath("$.meta.code").value(0));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

     //正常获取到信息
    @Test
    public void testReport1() {
        try {
            ResultActions perform = mockMvc.perform(get("/inner/getContentReportInfo?authSign=C8363025-BDFE-409F-8C08-8DABEBC18CA4")
                    .param("reportId","1519064188851426"))
                    .andExpect(status().isOk())
                    .andExpect(jsonPath("$.meta.code").value(0));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

  

    /**
     * 更新群聊举报，既发送消息又封禁账户
     */
    @Test
    public void testReport32() {
        try {
            ResultActions perform = mockMvc.perform(post("/inner/updateReport?authSign=C8363025-BDFE-409F-8C08-8DABEBC18CA4")
                    .contentType(MediaType.APPLICATION_JSON).content("{\"groupChatIllegalInput\":{\"messageFeedIdList\":[\"c_1500459436330003\",\"c_1510558939171789\"],\"closureTime\":1,\"closureFeedIdList\":[\"c_1500459436330003\"]},\n" +
                            "\"handlePersonId\":374771,\n" +
                            "\"handlePersonName\":\"测试者\",\n" +
                            "\"handleReason\":\"这群聊涉及广告骚扰\",\n" +
                            "\"illegalType\":16,\n" +
                            "\"reportId\":1651096104604331,\n" +
                            "\"type\":4\n" +
                            "}"))
                    .andExpect(status().isOk())
                    .andExpect(jsonPath("$.meta.code").value(0));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 更新内容举报，删除内容，mockMvc在通过域名获取IP和端口号时无法正常执行
     */
    @Test
    public void testReport33() {
        try {
            ResultActions perform = mockMvc.perform(post("/inner/updateReport?authSign=C8363025-BDFE-409F-8C08-8DABEBC18CA4")
                    .contentType(MediaType.APPLICATION_JSON).content("{\"contentIllegalInput\":{\"closureTime\":0,\"deleteContent\":1,\"reportFeed\":\"o_1503976703662186\"},\n" +
                            "\"handlePersonId\":374771,\n" +
                            "\"handlePersonName\":\"测试者\",\n" +
                            "\"handleReason\":\"这内容涉及侮辱诋毁\",\n" +
                            "\"illegalType\":17,\n" +
                            "\"reportId\":1545109146557203,\n" +
                            "\"type\":14\n" +
                            "}"))
                    .andExpect(status().isOk())
                    .andExpect(jsonPath("$.meta.code").value(0));
            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

在测试第33个用例时总是会莫名其妙的出现子线程挂掉的情况，从网上查了查资料，查阅到的信息如下：

线程不像进程，一个进程中的线程之间是没有父子之分的，都是平级关系。即线程都是一样的, 退出了一个不会影响另外一个。
但是所谓的"主线程"main,其入口代码是类似这样的方式调用main的：exit(main(...))。
main执行完之后, 会调用exit()。
exit() 会让整个进程over终止，那所有线程自然都会退出。

也就是说，mockMvc.perform方法主线程执行完后，子线程被强制退出了，所以才会出现莫名其妙的问题，解决该问题最简单的办法便是让主线程休息一下，我这里设置休息5秒钟，如下图所示。这样再跑这个用例，就没问题了！

使用MockMvc测试带有异步方法所踩的坑及解决办法

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