如何在final类中模拟静态方法

Question

我有一些代码在final类中有一个静态方法。我试着嘲笑那种方法。我试着做了一些事情。。

public final Class Class1{
 public static void doSomething(){
  } 
}

我怎么能嘲笑doSomething（）？我试过了。。

Class1 c1=PowerMockito.mock(Class1.class)
PowerMockito.mockSatic(Class1.class);
Mockito.doNothing().when(c1).doSomething();

这给了我一个错误：

org.mockito.exceptions.misusing.UnfinishedStubbingException: 
Unfinished stubbing detected here:
-> at com.cerner.devcenter.wag.textHandler.AssessmentFactory_Test.testGetGradeReport_HTMLAssessment(AssessmentFactory_Test.java:63)
E.g. thenReturn() may be missing.
Examples of correct stubbing:
    when(mock.isOk()).thenReturn(true);
    when(mock.isOk()).thenThrow(exception);
    doThrow(exception).when(mock).someVoidMethod();
Hints:
 1. missing thenReturn()
 2. you are trying to stub a final method, you naughty developer!
    at org.powermock.api.mockito.internal.invocation.MockitoMethodInvocationControl.performIntercept(MockitoMethodInvocationControl.java:260)

Answer 1

最常用的测试框架是JUnit4。所以，如果你正在使用它，你需要用来注释测试类

@RunWith( PowerMockRunner.class )
@PrepareForTest( Class1.class )

比

PowerMockito.mockSatic(Class1.class);
Mockito.doNothing().when(c1).doSomething();
Mockito.when(Class1.doSomething()).thenReturn(fakedValue);
// call of static method is required to mock it
PowerMockito.doNothing().when(Class1.class);
Class1.doSomething();

Answer 2

我使用PowerMock。它让你做莫基托做不到的事。https://github.com/powermock/powermock/wiki

@RunWith(PowerMockRunner.class)
@PrepareForTest(StaticClass.class)
public class StaticTest {
@Before
public void setUp() {
    PowerMockito.mockStatic(Bukkit.class);
    //When a static method with no arguments is called.
    when(StaticClass.callMethod1()).thenReturn(value);
    //When a static method with an argument is called.
    when(StaticClass.callMethod2(argument)).thenReturn(value2);
    //Use when you don't care what the argument is..   
    //use Mockito.anyInt(), Mockito.anyDouble(), etc.
    when(StaticClass.callMethod3(Mockito.anyString())).thenReturn(value3);
  }
@Test
public void VerifyStaticMethodsWork() {
    assertEquals(value, StaticClass.callMethod1());
    assertEquals(value2, StaticClass.callMethod2(argument));
    assertEquals(value3, StaticClass.callMethod3("Hello"));
}
}