Added the Rest Assured Example

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

@@ -0,0 +1,34 @@
+package com.baeldung.web.controller;
+
+import io.restassured.RestAssured;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static io.restassured.RestAssured.given;
+import static org.springframework.boot.test.context.SpringBootTest.WebEnvironment.RANDOM_PORT;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(webEnvironment = RANDOM_PORT)
+@TestPropertySource(properties = {"spring.main.allow-bean-definition-overriding=true", "server.servlet.context-path=/"})
+public class GreetControllerRealIntegrationTest {
+
+    @LocalServerPort
+    private int port;
+
+    @Before
+    public void setUp() {
+        RestAssured.port = port;
+    }
+
+    @Test
+    public void givenGreetURI_whenSendingReq_thenVerifyResponse() {
+        given().get("/greet")
+          .then()
+          .statusCode(200);
+    }
+}