How can I mock an instance of an enum class with PowerMock & Mockito?

Question

I tried to follow the example offered in the answer to this very similar question, but it does not work for me. I get the following error message:

java.lang.         


        

Answer 1

I got this working by extending the PowerMockTestCase class that handles this kind of thing for TestNG:

@PrepareForTest(TestEnumerable.class)
@Test(groups = {"LoadableBuilderTestGroup"})
public class LoadableBuilderTest extends PowerMockTestCase {

 private TestEnumerable mockEnumerable;

 @SuppressWarnings("unchecked")
    @BeforeMethod
    public void setUp() {
        mockEnumerable = PowerMockito.mock(TestEnumerable.class);

    }
}

Answer 2

You need to run this with PowerMockRunner

eg.

@RunWith(PowerMockRunner.class)
@PrepareForTest({ ExampleEnumerable.class})
@Test(groups = {"LoadableBuilderTestGroup"})
public class LoadableBuilderTest {
    private ExampleEnumerable mockEnumerable;

    @BeforeMethod
    public void setUp() {
        mockEnumerable = mock(ExampleEnumerable.class);
    }
}

Answer 3

Hi guys, to me worked as below:

First add power mockito on pom.xml:

<dependency>
    <groupId>org.powermock</groupId>
    <artifactId>powermock-module-junit4</artifactId>
    <version>2.0.4</version>
    <scope>test</scope>
</dependency>

and then on my class:

@RunWith(PowerMockRunner.class)
@PrepareForTest({EnumClass.class})
public class EnumClassTest{
    private EnumClassTest enumClassTest;
    
    @Before
    public void setUp() {
        enumClassTest = mock(EnumClassTest.class);
    }
    
    @Test
    public void someMethod() {
        //My code test here
    }