完善SpringBoot Hello World 单元测试

chapter-1-spring-boot-quickstart/src/main/resources/application.properties

@@ -0,0 +1 @@
+server.port=-1

chapter-1-spring-boot-quickstart/src/test/java/demo/springboot/QuickStartApplicationTests.java

@@ -1,16 +1,38 @@
 package demo.springboot;
 
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
+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.context.TestPropertySource;
 import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
 @RunWith(SpringRunner.class)
-@SpringBootTest
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT, classes = QuickStartApplication.class)
+@AutoConfigureMockMvc
+@TestPropertySource(locations = "classpath:application.properties")
 public class QuickStartApplicationTests {
 
-	@Test
+    @Autowired
-	public void contextLoads() {
+    private MockMvc mvc;
-	}
+
+
+    @Test
+    public void requestHello_thenStatus200_and_outputHello() throws Exception {
+        mvc.perform(get("/hello")
+                .contentType(MediaType.APPLICATION_JSON))
+                .andExpect(status().isOk())
+                .andExpect(content().contentTypeCompatibleWith(MediaType.TEXT_PLAIN))
+                .andExpect(content().encoding("UTF-8"))
+                .andExpect(content().string("Hello，Spring Boot！"));
+    }
 
 }

chapter-1-spring-boot-quickstart/src/test/resources/application.properties

@@ -0,0 +1 @@
+server.port=-1