3/20/2023 0 Comments Mockito argument captor![]() ![]() ![]() This is because we have to create the captor outside the line we use it on, reducing readability. In this way, we can provide additional JUnit assertions for our tests. We can obtain the values passed when a particular method is invoked using an argument captor with the methods such as then() or verify(). In contrast to the first test, notice how we have to perform an extra assert on the last line to do the same as Mockito.eq(credentials).įinally, notice how it isn't immediately clear what credentialsCaptor.capture() refers to. In the org.mockito package, there is a class called ArgumentCaptor, which captures arguments for mocked methods for further assertions. Mockito.when(thenticate(credentialsCaptor.capture()))ĪssertEquals(credentials, credentialsCaptor.getValue()) Next, consider the same test using an ArgumentCaptor instead: Credentials credentials = new Credentials("baeldung", "correct_password", "correct_key") Here we use Mockito.eq(credentials) to specify when the mock should return an object. Sometimes it’s good to assert arguments after verification. This is the best technique to match arguments since it simplifies testing. Mockito uses equals () to verify Java parameter values. ArgumentCaptor provides an API to test the calculated value. By saying so, we can conclude that calling a. Argument captors enable us to inspect fake values directly. Mockito verifies argument values in natural java style: by using an equals(). We can mock a part of the object by stubbing few methods, while real method invocations will be used for the other. thenReturn(AuthenticationStatus.AUTHENTICATED) ĪssertTrue(thenticatedSuccessfully(credentials)) Use it to capture argument values for further assertions. This is also the recommended way of matching arguments because it makes. Mockito.when(thenticate(Mockito.eq(credentials))) Mockito verifies argument values in natural java style: by using an equals() method. Credentials credentials = new Credentials("baeldung", "correct_password", "correct_key") ![]()
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