diff --git a/homework7/src/main/java/com/msksbr/homework7/DeleteUserTest.java b/homework7/src/main/java/com/msksbr/homework7/DeleteUserTest.java
new file mode 100644
index 0000000..7ffbbb3
--- /dev/null
+++ b/homework7/src/main/java/com/msksbr/homework7/DeleteUserTest.java
@@ -0,0 +1,20 @@
+/*
+ * @name: DeleteUserTest.java
+ * @author: msksbr
+ * @date: 2025-05-26
+ * @version: 1.0
+ * @description: Test class for deleting a user.
+ */
+package com.msksbr.homework7;
+
+import com.msksbr.homework7.dao.UsersDao;
+
+public class DeleteUserTest {
+    public static void main(String[] args) {
+        UsersDao usersDao = new UsersDao();
+        usersDao.deleteUser(9999);
+        if (usersDao.findUserById(9999) == null) {
+            System.out.println("true");
+        }
+    }
+}
diff --git a/homework7/src/main/java/com/msksbr/homework7/FindUserByIdTest.java b/homework7/src/main/java/com/msksbr/homework7/FindUserByIdTest.java
new file mode 100644
index 0000000..71ef932
--- /dev/null
+++ b/homework7/src/main/java/com/msksbr/homework7/FindUserByIdTest.java
@@ -0,0 +1,20 @@
+/*
+ * @name: FindUserByIdTest.java
+ * @author: msksbr
+ * @date: 2025-05-26
+ * @version: 1.0
+ * @description: Test class for finding a user by id.
+ * @version: 1.0
+ */
+package com.msksbr.homework7;
+
+import com.msksbr.homework7.dao.UsersDao;
+import com.msksbr.homework7.domain.User;
+
+public class FindUserByIdTest {
+    public static void main(String[] args) {
+        UsersDao usersDao = new UsersDao();
+        User user = usersDao.findUserById(1000);
+        System.out.println("id为1000的用户的name值为：" + user.getUsername());
+    }
+}
diff --git a/homework7/src/main/java/com/msksbr/homework7/UpdateUserTest.java b/homework7/src/main/java/com/msksbr/homework7/UpdateUserTest.java
new file mode 100644
index 0000000..859e0fd
--- /dev/null
+++ b/homework7/src/main/java/com/msksbr/homework7/UpdateUserTest.java
@@ -0,0 +1,27 @@
+/*
+ * @name: UpdateUserTest.java
+ * @author: msksbr
+ * @date: 2025-05-26
+ * @version: 1.0
+ * @description: Test class for updating a user.
+ */
+package com.msksbr.homework7;
+
+import com.msksbr.homework7.dao.UsersDao;
+import com.msksbr.homework7.domain.User;
+
+public class UpdateUserTest {
+    public static void main(String[] args) {
+        UsersDao userDao = new UsersDao();
+        User user = new User();
+        user.setId(9999);
+        user.setUsername("test1");
+        user.setPassword("test1");
+        user.setEmail("modified@example.com");
+        user.setBirthday(new java.util.Date());
+        userDao.updateUser(user);
+        if (userDao.findUserById(9999).getUsername().equals("test1")) {
+            System.out.println("true");
+        }
+    }
+}