Mockito capture argument. Mar 19, 2023 · Mockito is a popular Java mocking framework that allows developers to create mock objects for testing. Use the capture () method to collect the arguments after the method call, allowing for assertions on them. In the end, we'll be able to capture arguments and write assertions against them. We'll be using the PersonService and PersonRepository classes. Notice that Nov 29, 2024 · Learn how to use Argument Captors in Mockito to capture and assert method arguments effectively ensuring precise and reliable unit tests. For our example, we will use it to capture a string argument. Using the ArgumentCaptor we can get the argument instance created internally and used in the collaborator call and thus we can verify it. Sep 8, 2025 · Learn how to use Mockito's ArgumentCaptor to capture method arguments, verify interactions, and write stronger unit tests with clear examples Nov 1, 2023 · ArgumentCaptor is a feature provided by the Mockito library that allows you to capture the arguments passed to a method call on a mock object. Overview In this tutorial, we'll investigate how to capture method arguments on the mocked methods using Mockito. This feature empowers you to capture and assert method arguments, leading to highly targeted tests.