@InjectMocks, object instanciated in @Test but null in @ParameterizedTest

Question

I'm trying to unit test a class using mockito (version 5.3.1) and junit (4.13.2). The test class is annotated @RunWith(MockitoJUnitRunner.class), the tested object is

    @InjectMocks
    TestedBean testedBean;

and all its dependencies are annotated with @Mock. This approach works correctly already for a few test methods which are all annotated with @Test.
Now consider these two test methods:

    @Test
    public void test1() {
        String value = "value";
        String filter = "val";
        boolean expectedResult = true;

        // when
        var result = testedBean.testedMethod(value, filter, null);

        // then
        assertThat(result, is(expectedResult));
    }


    @CsvSource({
            "value, val, true"
    })
    @ParameterizedTest
    public void test2(String value, String filter, boolean expectedResult) {

        // when
        var result = testedBean.testedMethod(value, filter, null);

        // then
        assertThat(result, is(expectedResult));
    }

The @Test annotated test passes correctly while the @ParameterizedTest throws a NullPointerException as this.testedBean is null.
How is it possible that the object is constructed as expected in a @Test but not in a @ParameterizedTest?

Answer 1

@RunWith(MockitoJUnitRunner.class) doesn't support parameterized tests. The test class has to be annotated additionally with

@ExtendWith(MockitoExtension.class)

to make it work.