测试框架

Mockito 测试框架

Mockito 是的 Java 单元测试 Mock 框架，开源

Posted by 高明 on 2020-06-06

Mockito 测试框架

Mockito

Mockito是mocking框架

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<dependency>
    <groupId>org.mockito</groupId>
    <artifactId>mockito-all</artifactId>
    <version>1.9.5</version>
    <scope>test</scope>
</dependency>
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<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.11</version>
    <scope>test</scope>
</dependency>
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@Test
public void verify_behaviour(){
    //模拟创建一个List对象
    List mock = mock(List.class);
    //使用mock的对象
    mock.add(1);
    mock.clear();
    //验证add(1)和clear()行为是否发生
    verify(mock).add(1);
    verify(mock).clear();
}

mock redis

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@Mock
private RedisTemplate<String, String> stringRedisTemplate;
@Mock
private ValueOperations valueOperations;
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when(stringRedisTemplate.opsForValue()).thenReturn(valueOperations);

mock redisson lock

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@Mock
private RedissonClient redissonClient;
@Mock
private RedissonLock redissonLock;
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when(mgkBaseService.getLock(any(),any())).thenReturn(redissonLock);
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when(redissonClient.getLock(any())).thenReturn(redissonLock);

Mock @Value

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@Test
public void testGetWeChatSign() {
    when(stringRedisTemplate.opsForValue()).thenReturn(valueOperations);
    ReflectionTestUtils.setField(landingPageServiceDelegate, "appId", "");
    ReflectionTestUtils.setField(landingPageServiceDelegate, "appSecret", "");
    ReflectionTestUtils.setField(landingPageServiceDelegate, "accessTokenUrl", "");
    ReflectionTestUtils.setField(landingPageServiceDelegate, "jsapiTicketUrl", "");
    String weChatSign = landingPageServiceDelegate.getWeChatSign();
    assertNotNull(weChatSign);
}

实际项目开发中，我们经常会使用@Value注解从配置文件中注入属性值，写单侧时，在不启动容器的条件下，如何对这种属性进行mock呢？对这种情况，Spring提供了一个很好的工具类ReflectionTestUtils来实现。
注入属性：

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@Value("${prepaid.partner.id}")
private String merchantPartnerId;

对这个属性，在单测中可以这样mock：

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ReflectionTestUtils.setField(targetObject, "merchantPartnerId", "123");

Mock Void

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doNothing().when(collageLogService).insertLog(any(NewCollageOperationLogDto.class));

Mock 属性赋值

比如数据库插入数据时，po带Id

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when(mgkCollageMediaDao.insertSelective(any())).thenAnswer(answer -> {
    MgkCollageMediaPo po = answer.getArgumentAt(0, MgkCollageMediaPo.class);
    po.setId(2);
    return 1;
});
collageMediaServiceDelegate.insert(operator, collageMediaDto);

预期的异常

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@Test(expected = IllegalArgumentException.class)

初始化参数

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BeanTestUtils.initSimpleFields(QueryArchiveListDto.builder().build());
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