java - 使用 Mockito 模拟 lombok @Getter 字段

Question

我在我的一些静态字段上使用带有 Lombok 的 @Getter 符号:

public class A {

    @Getter protected static MyClass myClass;
}

在进行单元测试时，我必须为一段代码模拟这些静态字段的值:

MyClass.getMyClass();

为了 mock ，我在做:

mock(MyClass.class);
when(MyClass.getMyClass()).thenReturn(...);

但是，这样的模拟给出了以下错误。

 [testng] org.mockito.exceptions.misusing.MissingMethodInvocationException:
 [testng] when() requires an argument which has to be 'a method call on a mock'.
 [testng] For example:
 [testng]     when(mock.getArticles()).thenReturn(articles);
 [testng]
 [testng] Also, this error might show up because:
 [testng] 1. you stub either of: final/private/equals()/hashCode() methods.
 [testng]    Those methods *cannot* be stubbed/verified.
 [testng]    Mocking methods declared on non-public parent classes is not supported.
 [testng] 2. inside when() you don't call method on mock but on some other object.

我一定是遇到了条件 2，但我不明白我为什么没有“在 mock 上调用方法”。

有没有人成功模拟过Lombok getters？

谢谢!

Answer 1

正如我在上面的评论中所说，Mockito 不支持模拟静态方法。

使用Powermock

例子:

@RunWith(PowerMockRunner.class)
@PrepareForTest(A.class)
public class YourTestClass{
    PowerMockito.mockStatic(A.class);

    when(A.getMyClass()()).thenReturn(...);

}

此外，

MyClass.getMyClass();

getMyClass() belongs to class A or class Myclass ?