BAEL-3871: Added tests for duplicate HTTP controller methods with different response types.

spring-rest-http/src/test/java/com/baeldung/requestmapping/FooMappingExamplesControllerTest.java

@@ -0,0 +1,35 @@
+package com.baeldung.requestmapping;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+@RunWith(SpringRunner.class)
+@WebMvcTest(FooMappingExamplesController.class)
+public class FooMappingExamplesControllerTest {
+
+    @Autowired
+    private MockMvc mvc;
+
+    @Test
+    public void givenAcceptsJson_whenGetDuplicate_thenJsonResponseReturned() throws Exception {
+        mvc.perform(get("/ex/foos/duplicate")
+            .accept(MediaType.APPLICATION_JSON))
+            .andExpect(status().isOk())
+            .andExpect(content().string("{\"message\":\"Duplicate\"}"));
+    }
+
+    @Test
+    public void givenAcceptsXml_whenGetDuplicate_thenXmlResponseReturned() throws Exception {
+        mvc.perform(get("/ex/foos/duplicate")
+            .accept(MediaType.APPLICATION_XML))
+            .andExpect(status().isOk())
+            .andExpect(content().string("<message>Duplicate</message>"));
+    }
+}