Reworked to use the Spring Guides' Spring Boot web application example

src/test/java/com/example/springboot/HelloControllerIT.java

@@ -0,0 +1,27 @@
+package com.example.springboot;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.http.ResponseEntity;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+public class HelloControllerIT {
+
+	@Autowired
+	private TestRestTemplate template;
+
+    @Test
+    public void getHello() throws Exception {
+        ResponseEntity<String> response = template.getForEntity("/", String.class);
+        assertThat(response.getBody()).isEqualTo("Greetings from Spring Boot!");
+    }
+
+    public static void main(String[] args) throws Exception {
+        new HelloControllerIT().getHello();
+    }
+}

src/test/java/com/example/springboot/HelloControllerTest.java

@@ -0,0 +1,29 @@
+package com.example.springboot;
+
+import static org.hamcrest.Matchers.equalTo;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+
+@SpringBootTest
+@AutoConfigureMockMvc
+public class HelloControllerTest {
+
+	@Autowired
+	private MockMvc mvc;
+
+	@Test
+	public void getHello() throws Exception {
+		mvc.perform(MockMvcRequestBuilders.get("/").accept(MediaType.APPLICATION_JSON))
+				.andExpect(status().isOk())
+				.andExpect(content().string(equalTo("Greetings from Spring Boot!")));
+	}
+}