Question

这是我的源代码。

public class Config{
  private Long id;
  private ConfigService configService;
  public Config(Long id){
    this.id=id;
  }
  public setConfigService(ConfigService configService){
    this.configService=configService;
  }
  public ConfigService  getConfigService(){
    return configService;
  }
  public void callingService(){
    ManagedElInterface mei = null
    mei=getConfigService().getIdsFromConfigService(getId());
    //...
  }
  private Long getId(){
  return id;
  }
}

我嘲笑

mei=getConfigService().getIdsFromConfigService(getId());

但是我可以在“ mei”中看到null

下面是我使用EasyMock进行模拟的测试类。

public class TestConfig{
  @Test
  public void testcallingService{
  Config config=new Config(12345l);
  ConfigService configService =EasyMock.createMock(ConfigService .class);
  config.setConfigService (ConfigService );
  ManagedElInterface mei=new ManagedElInterface();
  //here i mocked 
  EasyMock.expect(configService.
  getIdsFromConfigService(EasyMock.anyLong()))
  .andReturn(mei);
  config.callingService();
  }
}

ConfigService类：

    public class ConfigService{
      public ManagedElInterface getIdsFromConfigService(Long l){
        //database code
       return new ManagedElInterface();
      }
    }

ManagedElInterface类：

  public class ManagedElInterface{
     //data
    }

这里 ConfigService 是具有 getIdsFromConfigService（Long l）的类。我不想执行此方法，所以我想进行模拟。 getConfigService（）。getIdsFromConfigService（getId（））; 返回 ManagedElInterface 类的对象，因此我为 ManagedElInterface创建对象并返回自己的数据 。你能提供任何线索我在做什么错。预先感谢

Answer 1

ConfigService：

public class ConfigService {    
    public String getId(Long id) {
        return "hardcoded";
    }
}

配置

public class Config {

    private Long id;
    private ConfigService service;

    public Config(Long id) {
        this.id = id;
    }

    public void setConfigService(ConfigService configService){
        this.service=configService;
    }

    public String callingService() {
        String result = this.service.getId(id);
        System.out.println("result = " + result + " for id: " + id);
        return result;
    }
}

测试

import org.easymock.EasyMockSupport;
import org.junit.jupiter.api.Test;

import static org.easymock.EasyMock.expect;
import static org.junit.jupiter.api.Assertions.assertEquals;

public class ConfigTest extends EasyMockSupport {
    // have your testClass extend EasyMockSupport, and use that to create your mock

    private ConfigService service;

    @Test
    public void testCallingService() {
        Config config=new Config(12345l);
        service = createMock(ConfigService.class);
        // as said before, use the createMock method you inherit
        config.setConfigService (service );
        expect(service.getId(12345l)).andReturn("mocked");
        expect(service.getId(17L)).andReturn("smaller");
        replayAll(); // don't forget the replayAll();
        String result = config.callingService();
        assertEquals( "mocked", result);
        Config config2 = new Config(17L);
        config2.setConfigService(service);
        String result2 = config2.callingService();
        assertEquals( "smaller", result2);
        verifyAll(); // to end your test which uses a mock
    }

    // Simple test without the mock to show the difference
    @Test
    public void testNonMocked() {
        Config config = new Config(50L);
        config.setConfigService(new ConfigService());
        String result = config.callingService();
        assertEquals("hardcoded", result);
    }
}

我用于测试的依赖项

<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter-api</artifactId>
    <version>5.5.0-M1</version>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter-engine</artifactId>
    <version>5.5.0-M1</version>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>org.junit.platform</groupId>
    <artifactId>junit-platform-launcher</artifactId>
    <version>1.5.0-M1</version>
    <scope>test</scope>
</dependency>

<dependency>
    <groupId>org.easymock</groupId>
    <artifactId>easymock</artifactId>
    <version>4.0.2</version>
    <scope>test</scope>
</dependency>

模拟方法无法执行？

1 个答案: