test(user-service): improve update test readability

second-part/hw-03/user-service/src/test/java/com/example/UserDaoIntegrationTest.java

@@ -96,18 +96,23 @@ class UserDaoIntegrationTest {
   @Test
   void updateChangesPersistedUser() {
     User user = userDao.create(new User("User", "user@example.com", 28));
-    user.setName("User Updated");
-    user.setEmail("user.updated@example.com");
-    user.setAge(29);
+
+    String updatedName = "User Updated";
+    String updatedEmail = "user.updated@example.com";
+    int updatedAge = 29;
+
+    user.setName(updatedName);
+    user.setEmail(updatedEmail);
+    user.setAge(updatedAge);
 
     User result = userDao.update(user);
 
     assertNotNull(result);
     User updated = userDao.findById(user.getId());
     assertNotNull(updated);
-    assertEquals("User Updated", updated.getName());
-    assertEquals("user.updated@example.com", updated.getEmail());
-    assertEquals(29, updated.getAge());
+    assertEquals(updatedName, updated.getName());
+    assertEquals(updatedEmail, updated.getEmail());
+    assertEquals(updatedAge, updated.getAge());
   }
 
   @Test