java - Powermockito java.lang.VerifyError

Question

我正在使用 powermock.mockstatic 这条线，这样我就可以控制它的返回值，因为它是唯一的 Swing ，我不必测试它。

@Before
public void setUp() throws Exception
RelatedIntelligencePanel  rel = Mockito.mock(RelatedIntelligencePanel.class);
PowerMockito.mockStatic(RelatedIntelligencePanel.class);
PowerMockito.whenNew(RelatedIntelligencePanel.class).withNoArguments().thenReturn(rel);
...
.. some other unrelated code
}
...........
........ some other code and Tests
......
@Test
public class SomeClass{
RelatedIntelligencePanel relIntPanel = new RelatedIntelligencePanel();

但它抛出 java.lang.VerifyError。我曾经 mock 过很多这样的事情，没有一个异常(exception)。删除 @PrepareForTest 和 @Runwith 有帮助，但当我这样做时我会失去 powermock。我的详细错误也在下面；

java.lang.VerifyError: Bad return type
Exception Details:
Location:
javax/swing/plaf/metal/MetalLookAndFeel.getLayoutStyle()Ljavax/swing/LayoutStyle @3: areturn
Reason:
Type 'javax/swing/plaf/metal/MetalLookAndFeel$MetalLayoutStyle' (current frame, stack[0]) is not assignable to 'javax/swing/LayoutStyle' (from method signature)
Current Frame:
bci: @3
flags: { }
locals: { 'javax/swing/plaf/metal/MetalLookAndFeel'}
stack {'javax/swing/plaf/metal/MetalLookAndFeel$MetalLayoutStyle'}
Bytecode:
0x0000000: b807 49b0

Answer 1

好的，我找到答案了。同时使用 @PowerMockIgnore("javax.swing.*") 和

PowerMockito.mockStatic(ClassWithStatics.class);
when(ClassWithStatics.getString()).thenReturn("Hello!");

确实解决了我的问题。如果没有 @PowerMockIgnore("javax.swing.*")，PowerMockito.when 将无法工作，反之亦然。 @stuXnet 和 @staszko032 都是正确的，但这些建议并不能单独发挥作用。注意:WhenNew 也可以工作，但在本例中不行。