[SOLVED] Is there a way to use AssertJ assertions with Spring MVC Test?

Is there a way to use AssertJ assertions with Spring MVC Test?

I have been using AssertJ for some time in my projects. Recently I started using Spring MVC Test for testing Spring MVC controllers.

But I am not getting how to use AssertJ with it. All examples I see online all use Hamcrest with Spring MVC Test.

Below is an example using the Hamcrest API.

mockMvc
                .perform(get("/user?operation=userList"))
                .andExpect(status().isOk())
                .andExpect(model().attribute(UserController.MODEL_ATTRIBUTE_USER_LIST, userList))
                .andExpect(view().name(UserController.VIEW_USER_LIST))
                .andExpect(model().attribute(UserController.MODEL_ATTRIBUTE_USER_LIST, hasSize(2)))
                .andExpect(model().attribute(UserController.MODEL_ATTRIBUTE_USER_LIST, hasItem(
                        allOf(
                                hasProperty("id", is(1L)),
                                hasProperty("description", is("Lorem ipsum")),
                                hasProperty("title", is("Foo"))
                        )
                )))
                .andExpect(model().attribute(UserController.MODEL_ATTRIBUTE_USER_LIST, hasItem(
                        allOf(
                                hasProperty("id", is(2L)),
                                hasProperty("description", is("Lorem ipsum")),
                                hasProperty("title", is("Bar"))
                        )
                )));

Solution

Update - March 2024

Dedicated support for using AssertJ assertions with MockMvc is coming in Spring Framework 6.2.

See Spring Framework issue 21178 for details.

Update

If you would like to vote for inclusion of support for AssertJ assertions with MockMvc, please see the related Spring JIRA issue: SPR-16637.

Generally speaking, you may choose whatever assertion framework you like when testing with Spring.

However, the particular scenario you are describing involves the API of the Spring MVC Test framework. The methods in question are designed to be used with the Hamcrest Matcher API. It is therefore not possible to use AssertJ within those method calls.

Regards,

Sam (author of the Spring TestContext Framework)