Java mockito service test parameter negation

Question

I try to test my service with mockito 2.7.15.

First I try this:

when(customerDaoMock.find(AdditionalMatchers.not(id1))).thenReturn(null);

But I got a InvalidUseOfmatchersException.. So I googled the problem and found this stackoverflow question. After that my second try would have been:

when(customerDaoMock.find(AdditionalMatchers.not(Mockito.argThat‌(id1)))).thenReturn(null);

but Mockito class has no longer method argThat

So my question is how can I use not negation method in mockito?

Or is there any other option, or better solution for this problem?

Do you need this statement `thenReturn(null)`? Any call to the mock without conditions returns null — solomkinmv, Mar 24 '17 at 10:52

solomkinmv · Accepted Answer · 2017-03-24T11:04:24.333

2

Here is an example from the AdditionalMatchers javadoc:

//anything but not "ejb"
mock.someMethod(not(eq("ejb")));

Here is working example:

public static class Tmp {
    public String f(Long a) {
        return a.toString();
    }
}

@Test
public void mockitoTest() {
    Tmp mock = Mockito.mock(Tmp.class);
    when(mock.f(AdditionalMatchers.not(Mockito.eq(5L)))).thenReturn("42");

    Assert.assertEquals("42", mock.f(4L));
    Assert.assertNull(mock.f(5L));
}

edited Mar 24 '17 at 11:04

answered Mar 24 '17 at 10:29

solomkinmv

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Thx for the response! Unfortunataly AdditionalMatchers of mockito has no `eq` method with one parameter. (for Long) Check this: "`The method eq(double, double) in the type AdditionalMatchers is not applicable for the arguments (Long)`" – LakiGeri Mar 24 '17 at 10:35

score 1 · Answer 2 · answered Mar 24 '17 at 10:48

1

Maybe it is more understandable without the static imports:

Mockito.when(customerDaoMock.find(AdditionalMatchers.not(Mockito.eq(id1))))
    .thenReturn(null);

So you can use ArgumentMatchers#eq(long) paired with AdditionalMatchers#not(long).

answered Mar 24 '17 at 10:48

DVarga

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Java mockito service test parameter negation

2 Answers2