How do you write a unit test with MockMVC?

Pragya Keshap answered on March 1, 2023 Popularity 3/10 Helpfulness 1/10

answer How do you write a unit test with MockMVC?

How do you write a unit test with MockMVC?

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class TodoItemCrudControllerTest {
 
    private TodoItemRequestBuilder requestBuilder;
    private TodoItemCrudService service;
 
    @BeforeEach
    void configureSystemUnderTest() {
        service = mock(TodoItemCrudService.class);
 
        MockMvc mockMvc = MockMvcBuilders
                .standaloneSetup(new TodoItemCrudController(service))
                .setHandlerExceptionResolvers(exceptionResolver())
                .setLocaleResolver(fixedLocaleResolver())
                .setViewResolvers(jspViewResolver())
                .build();
        requestBuilder = new TodoItemRequestBuilder(mockMvc);
    }
 
    @Nested
    @DisplayName("Render the information of all todo items")
    class FindAll {
 
        @Test
        @DisplayName("Should return the HTTP status code 200")
        void shouldReturnHttpStatusCodeOk() throws Exception {
            requestBuilder.findAll().andExpect(status().isOk());
        }
 
        @Test
        @DisplayName("Should render the todo item list view")
        void shouldRenderTodoItemListView() throws Exception {
            requestBuilder.findAll().andExpect(view().name("todo-item/list"));
        }
 
        @Nested
        @DisplayName("When no todo items are found from the database")
        class WhenNoTodoItemsAreFoundFromDatabase {
 
            @BeforeEach
            void serviceReturnsEmptyList() {
                given(service.findAll()).willReturn(new ArrayList<>());
            }
 
            @Test
            @DisplayName("Should display zero todo items")
            void shouldDisplayZeroTodoItems() throws Exception {
                requestBuilder.findAll().andExpect(model().attribute(
                        "todoItems", 
                        hasSize(0)
                ));
            }
        }
 
        //The other inner class is omitted
    }
}

Popularity 3/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java

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Contributed on Mar 01 2023

Pragya Keshap

0 Answers Avg Quality 2/10

How do you write a unit test with MockMVC?

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