@Test(expected = NullPointerException.class)
public void testValidateInstanceMethodsShouldThrowNullPointerExceptionIfErrorsIsNull() {
// Given:
// When:
underTest.validateInstanceMethods(null);
// Then: expect exception
}
@Test
public void
testValidateInstanceMethodsShouldNotThrowExceptionIfNoErrorsExistAndTestMethodsAreAvailable() {
// Given:
List<Throwable> errors = new ArrayList<Throwable>();
doReturn(asList(testMethod)).when(underTest).computeTestMethods();
// When:
underTest.validateInstanceMethods(errors);
// Then:
assertThat(errors).isEmpty();
}
@Test
public void
testValidateInstanceMethodsShouldAddExceptionIfComputeTestMethodsReturnsNoTestMethods() {
// Given:
List<Throwable> errors = new ArrayList<Throwable>();
doReturn(asList()).when(underTest).computeTestMethods();
// When:
underTest.validateInstanceMethods(errors);
// Then:
assertThat(errors).hasSize(1);
assertThat(errors.get(0)).hasMessage("No runnable methods");
}
@Test
public void
testValidateInstanceMethodsShouldNotThrowExceptionIfComputeTestMethodsWouldThrowExceptionButErrorsAlreadyExistsBefore() {
// Given:
List<Throwable> errors = new ArrayList<Throwable>();
doAnswer(
new Answer<Void>() {
@SuppressWarnings("unchecked")
public Void answer(InvocationOnMock invocation) throws Throwable {
((List<Throwable>) invocation.getArguments()[0]).add(new Error());
return null;
}
})
.when(underTest)
.validateTestMethods(errors);
doThrow(IllegalArgumentException.class).when(underTest).computeTestMethods();
// When:
underTest.validateInstanceMethods(errors);
// Then: no exception
}
