mock時忽略不必要的初始化

PowerMockito.mockStatic時忽略加載類的靜態field，比如想PowerMockito.mockStatic(ClassA.class)，ClassA如下

public class ClassA {

private static final boolean CONF_FLAG = Configuration.getConfig()
.get(Status.Initialization).getConfFlag(); // throws an NPE

public static methodTobeCalledByOtherTestMethod(TestObject a){
...
 }
}

filed CONF_FLAG需要調用一些其他依賴，而這些依賴不可獲得，當mock時會拋異常，可以使用：

@RunWith(PowerMockRunner.class)
@PrepareForTest({ClassA.class})
@SuppressStaticInitializationFor("com.xxx.xxx.ClassA")
public class XXXTest {

    @Test
    public void testXXX() {
        PowerMockito.mockStatic(ClassA.class);
        ....
    }
}

使用SuppressStaticInitializationFor就不會去初始化CONF_FLAG。

 

另外其他忽略的配置請見：Suppress Unwanted Behavior

參考：What am I doing wrong mocking this private static final variable using mockito and reflection?

修改某個靜態函數的返回值：PowerMock, mock a static method, THEN call real methods on all other statics