diff --git a/README.md b/README.md
index 8c70174f..a59d15d4 100644
--- a/README.md
+++ b/README.md
@@ -66,7 +66,7 @@
 ## 持续交付
 
 * [《芋道 Spring Boot 持续交付 Jenkins 入门》](http://www.iocoder.cn/Spring-Boot/Jenkins/?github) 对应 [lab-41](https://github.com/YunaiV/SpringBoot-Labs/tree/master/lab-41) 。
-* 《芋道 Spring Boot 单元测试 Test 入门》计划中...
+* [《芋道 Spring Boot 单元测试 Test 入门》](http://www.iocoder.cn/Spring-Boot/Unit-Test/?github) 对应 [lab-42](https://github.com/YunaiV/SpringBoot-Labs/tree/master/lab-42) 。
 * 《芋道 Spring Boot 容器 Docker 入门》计划中...
 
 ## 监控管理
diff --git a/lab-42/lab-42-demo01/pom.xml b/lab-42/lab-42-demo01/pom.xml
index d2a1a646..c6f20b9a 100644
--- a/lab-42/lab-42-demo01/pom.xml
+++ b/lab-42/lab-42-demo01/pom.xml
@@ -37,11 +37,10 @@
             <scope>test</scope>
         </dependency>
         <dependency>
-            <groupId>com.h2database</groupId>
+            <groupId>com.h2database</groupId> <!-- 单元测试，我们采用 H2 作为数据库 -->
             <artifactId>h2</artifactId>
             <scope>test</scope>
         </dependency>
     </dependencies>
 
-
 </project>
diff --git a/lab-42/lab-42-demo01/src/main/resources/application.yaml b/lab-42/lab-42-demo01/src/main/resources/application.yaml
index 00f6e885..0af15034 100644
--- a/lab-42/lab-42-demo01/src/main/resources/application.yaml
+++ b/lab-42/lab-42-demo01/src/main/resources/application.yaml
@@ -1,7 +1,4 @@
 spring:
-  application:
-    name: demo-application
-
   # datasource 数据源配置内容
   datasource:
     url: jdbc:mysql://127.0.0.1:3306/lab-39-mysql?useSSL=false&useUnicode=true&characterEncoding=UTF-8
diff --git a/lab-42/lab-42-demo01/src/test/java/cn/iocoder/springboot/lab23/testdemo/dao/UserDaoTest.java b/lab-42/lab-42-demo01/src/test/java/cn/iocoder/springboot/lab23/testdemo/dao/UserDaoTest.java
index 1e919b57..081da10e 100644
--- a/lab-42/lab-42-demo01/src/test/java/cn/iocoder/springboot/lab23/testdemo/dao/UserDaoTest.java
+++ b/lab-42/lab-42-demo01/src/test/java/cn/iocoder/springboot/lab23/testdemo/dao/UserDaoTest.java
@@ -10,7 +10,7 @@ import org.springframework.test.context.jdbc.Sql;
 import org.springframework.test.context.junit4.SpringRunner;
 
 @RunWith(SpringRunner.class)
-@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.NONE)
+@SpringBootTest
 public class UserDaoTest {
 
     @Autowired
diff --git a/lab-42/lab-42-demo01/src/test/java/cn/iocoder/springboot/lab23/testdemo/service/UserServiceTest.java b/lab-42/lab-42-demo01/src/test/java/cn/iocoder/springboot/lab23/testdemo/service/UserServiceTest.java
index 505b6ab4..25b9d120 100644
--- a/lab-42/lab-42-demo01/src/test/java/cn/iocoder/springboot/lab23/testdemo/service/UserServiceTest.java
+++ b/lab-42/lab-42-demo01/src/test/java/cn/iocoder/springboot/lab23/testdemo/service/UserServiceTest.java
@@ -12,7 +12,7 @@ import org.springframework.boot.test.mock.mockito.MockBean;
 import org.springframework.test.context.junit4.SpringRunner;
 
 @RunWith(SpringRunner.class)
-@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.NONE)
+@SpringBootTest
 public class UserServiceTest {
 
     @MockBean
diff --git a/lab-42/lab-42-demo01/src/test/resources/application.yaml b/lab-42/lab-42-demo01/src/test/resources/application.yaml
index 118cef21..382674c4 100644
--- a/lab-42/lab-42-demo01/src/test/resources/application.yaml
+++ b/lab-42/lab-42-demo01/src/test/resources/application.yaml
@@ -1,7 +1,4 @@
 spring:
-  application:
-    name: demo-application
-
   # datasource 数据源配置内容
   datasource:
     url: jdbc:h2:mem:testdb