#Junit json compare series
We then execute a series of andExpect() calls to validate the results: The perform() method executes the request and returns a ResultActions with the results of the execution. In this case, we pass a get() request builder, which represents an HTTP GET request, and pass it the URI that we want to GET: /rest/widgets. We construct a RequestBuilder (whose implementations I have statically imported from the. class) and pass it to the perform() method. The MockMvc::perform method executes a request against our web application and returns a ResultActions object against which we can execute assertions about the response. It begins by creating two Widgets and configures the mock WidgetService to return them when its findAll() method is called. The first test method, testGetWidgetsSuccess(), tests the successful retrieval of all widgets. The WidgetRestControllerTest creates a mock implementation of the WidgetService and configures it in each test case. Once we've created the MockMvc instance, we can autowire it into our test class just like we would any other Spring bean, using the annotation.
The annotation tells Spring to create an instance of MockMvc that is associated with the application context, so that it can deliver requests to the controllers handling them. Autowire an instance of MockMvc into our test class.Annotate our test class with the annotation.To use MockMvc, we need to do just two things: This utility allows us to "perform" a web request to a URI, optionally specifying headers and a body, and then perform validations against the response, including the HTTP status code, headers, and the content of the body. For this, we can use a testing utility that Spring provides to simulate the web request inside of a Spring application: MockMvc. Our next step is to test the web controller. Void testGetWidgetsSuccess() throws Exception Testing the web controller with MockMvc Import static WidgetRestControllerTest WidgetService MockMvc /widgets success") The Spring web controller test class (WidgetRestControllerTest.java)
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