CODEWITHSUNDEEP
mockingmockito
Oliver
Oliver

Reputation: 4173

How to mock a method call with an integer argument greater then X

How can I mock a method call with Mockito with an integer argument value greater then X?

I would like to write something like this:

doReturn("FooBar").when(persons).getPersons(Mockito.gt(10));

Upvotes: 5

Views: 9828

Answers (4)

Rostislav Dublin
Rostislav Dublin

Reputation: 101

Use AdditionalMatchers.gt:

import static org.mockito.Mockito.when;
import static org.mockito.ArgumentMatchers.*;
import static org.mockito.AdditionalMatchers.gt;
...
@Mock
private WalletService walletService;
...
@Before...
when(walletService.withdraw(eq(777), gt(1000), 
eq("USD"))).thenReturn(INSUFFICIENT_FUNDS);
...
@Test...

Upvotes: 6

Vasiliy Kulakov
Vasiliy Kulakov

Reputation: 5491

Mockito 2

Hamcrest is no longer a dependency to Mockito matchers.

However, I found MockitoHamcrest which seems to provide interoperability with Hamcrest matchers. Applied to the example in question, it would look like this: 

doReturn("FooBar").when(persons)
        .getPersons(MockitoHamcrest.intThat(Matchers.greaterThan(10)));

Upvotes: 7

Oliver
Oliver

Reputation: 4173

Mockito uses the matchers of Hamcrest. All of Mockitos argument matchers use these matchers to match the provided argument in a handy and type-safe way.

Mockito provides also the method argThat(Matcher) to use any matcher implementation of Hamcrest or custom Matcher implementation. There are also specialised versions as intThat(Matcher) for all primitved types.

So, knowing that, I rewrote the mocking of the method call:

doReturn("FooBar")
   .when(persons)
   .getPersons(Mockito.intThat(Matchers.greaterThan(10));

Upvotes: 12

JB Nizet
JB Nizet

Reputation: 691715

Write a Hamcrest Matcher<Integer> by extending ArgumentMatcher (named IntGreaterThan, for example), and then use

doReturn("FooBar").when(persons).getPersons(intThat(MyMatchers.isGreatherThan(10)));

where MyMatchers.isGreaterThan(10) creates a new instance of your IntGreatherThan matcher.

If you static import MyMatchers.isGreaterThan, it becomes

doReturn("FooBar").when(persons).getPersons(intThat(isGreatherThan(10)));

Upvotes: 1

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