Webapplicationcontext example (#620)

* An example of a test using a WebAppConfiguration annotation

* Giving the test the appropriate formatting

spring-mvc-java/src/test/java/com/baeldung/web/controller/EmployeeTest.java

@@ -0,0 +1,42 @@
+package com.baeldung.web.controller;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.model;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.view;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.MockitoAnnotations;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import org.springframework.web.context.WebApplicationContext;
+
+import com.baeldung.spring.web.config.WebConfig;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@WebAppConfiguration
+@ContextConfiguration(classes = WebConfig.class)
+public class EmployeeTest {
+
+    @Autowired
+    private WebApplicationContext webAppContext;
+    private MockMvc mockMvc;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mockMvc = MockMvcBuilders.webAppContextSetup(webAppContext).build();
+    }
+
+    @Test
+    public void whenEmployeeGETisPerformed_thenRetrievedStatusAndViewNameAndAttributeAreCorrect() throws Exception {
+        mockMvc.perform(get("/employee")).andExpect(status().isOk()).andExpect(view().name("employeeHome")).andExpect(model().attributeExists("employee")).andDo(print());
+    }
+}