mockito-core版本:1.10.19
powermock版本:1.6.6
我尝试模拟一些静态方法,但输出让我感到困惑。 这是我的代码:
class ClassWithStatics {
public static int getNextInt() {
return getInt() + 1;
}
public static int getInt() {
return 1;
}
public static long getTime() {
return System.currentTimeMillis();
}
}
@RunWith(PowerMockRunner.class)
@PrepareForTest({ClassWithStatics.class, System.class})
public class StubJustOneStatic {
@Test
public void test() {
PowerMockito.mockStatic(ClassWithStatics.class);
Mockito.when(ClassWithStatics.getInt()).thenReturn(0);
PowerMockito.mockStatic(System.class);
Mockito.when(System.currentTimeMillis()).thenReturn(12345L);
System.out.println("Next Int: " + ClassWithStatics.getNextInt());
System.out.println("Int: " + ClassWithStatics.getInt());
System.out.println("Time:" + ClassWithStatics.getTime());
}
}
输出
Next Int: 0
Int: 0
Time:0
但是当我使用以下代码时,ClassWithStatics.getTime()
会打印出我想要的内容。
@RunWith(PowerMockRunner.class)
@PrepareForTest({ClassWithStatics.class, System.class})
public class StubJustOneStatic {
@Test
public void test() {
// PowerMockito.mockStatic(ClassWithStatics.class);
// Mockito.when(ClassWithStatics.getInt()).thenReturn(0);
PowerMockito.mockStatic(System.class);
Mockito.when(System.currentTimeMillis()).thenReturn(12345L);
// System.out.println("Next Int: " + ClassWithStatics.getNextInt());
// System.out.println("Int: " + ClassWithStatics.getInt());
System.out.println("Time:" + ClassWithStatics.getTime());
}
}
非常感谢。
答案 0 :(得分:1)
您正在模拟静态类,这意味着如果您没有明确定义when().. then()行为,Mockito将返回默认值(如果为long则为0)。
您必须使用间谍来模拟某些方法,并让其他方法按实现方式运行:
PowerMockito.spy(ClassWithStatics.class);
Mockito.when(ClassWithStatics.getInt()).thenReturn(5);
现在你调用:
PowerMockito.mockStatic(System.class);
Mockito.when(System.currentTimeMillis()).thenReturn(12345L);
System.out.println("Time:" + ClassWithStatics.getTime());
在调用5
时调用ClassWithStatics.getInt()
和12345L
时,您应该ClassWithStatics.getTime()
。