将PowerMockRunner与Junit Test Suite结合使用

Question

I'm trying to create a Junit test suite along with using PowerMockRunner but it does not work.

@RunWith(PowerMockRunner.class)
@PowerMockRunnerDelegate(MainTest.class)
@Suite.SuiteClasses({ MainTest.Class1Test.class })
@PrepareForTest({
    StaticFieldsProvider.class
})
public class MainTest extends Suite {

public MainTest(Class<?> klass, RunnerBuilder builder)
        throws InitializationError {
    super(klass, builder);
}

public static class TestBase {
    @Before
    public void setUp() {
        MockitoAnnotations.initMocks(this);
        PowerMockito.mockStatic(StaticFieldsProvider.class);
    }
}

public static class Class1Test extends TestBase {
    @Before
    public void setUp() {
        super.setUp();
    }

    @Test
    public void test(){
        assertTrue(true);
    }
 }
}

When I try to run, it fails with error -

java.lang.IllegalArgumentException: Test class can only have one constructor at org.junit.runners.model.TestClass.(TestClass.java:40)

Any suggestions on how to use PowerMockRunner in above case?

Thanks

Answer 1

This is an old question, so we may get no resolution on whether or not this solution works for the OP; but this might work (I can't verify without having access to StaticFieldsProvider , but it works if I swap that out with one of my own classes). I would love for someone to edit and add more explanation as to why this works:

@RunWith(PowerMockRunner.class)
// * Delegate to Suite.class instead of MainTest.class *
@PowerMockRunnerDelegate(Suite.class)
@Suite.SuiteClasses({ MainTest.Class1Test.class })
@PrepareForTest({
        StaticFieldsProvider.class
})
// * Don't extend Suite *
public class MainTest {

// * Remove constructor *

    public static class TestBase {
        @Before
        public void setUp() {
            MockitoAnnotations.initMocks(this);
            PowerMockito.mockStatic(StaticFieldsProvider.class);
        }
    }

    public static class Class1Test extends TestBase {
        @Before
        public void setUp() {
            super.setUp();
        }

        @Test
        public void test(){
            assertTrue(true);
        }
    }
}

In case it helps someone else, I had a slightly different scenario in that only a couple of the classes in my suite need PowerMockRunner (and don't mock out the same thing, so the mock needs to happen in each individual test class instead of in the runner). It appears that as long as I @PrepareForTest in my runner (as above) the classes I will need in some of the test classes, I can still create the mocks in the @Before (or wherever) of the applicable test class. Hope this helps.

Answer 2

您不能扩展Suite ，因为它是JUnit 3的一部分，并且您正在使用JUnit4。（除去extends和构造函数。）有关JUnit 4中Suites的更多信息 ，请参见JUnit Wiki 。