test_StayLoggedIn button

src/test/java/CreateUserTest.java

@@ -2,6 +2,7 @@ import static org.junit.jupiter.api.Assertions.*;
 import org.junit.jupiter.api.Test;
 import java.io.File;
 import java.util.List;
+import static org.junit.jupiter.api.Assertions.*;
 
 class CreateUserTest {
 
@@ -60,5 +61,36 @@ class CreateUserTest {
         file.delete();
 	}
         
+        @Test
+        public void testUpdateStayLoggedIn() {
+        String filename = "test_users.json";
+        String id = "3";
+        String userName = "testUser3";
+        String password = "password789";
+        String birthday = "2002-01-01";
+        String firstName = "Jack";
+        String surname = "Doe";
+
+            // Create a user
+            CreateUser user = new CreateUser(id, userName, password, birthday, firstName, surname);
+
+            // Save user to JSON file
+            user.saveToJsonFile(filename);
+
+            // Update stayLoggedIn flag
+            CreateUser.updateStayLoggedIn(filename, userName, true);
+
+            // Read updated user from JSON file
+            List<CreateUser> userList = CreateUser.readUserListFromJsonFile(filename);
+
+            // Ensure that the stayLoggedIn flag is updated
+            assertTrue(userList.get(0).isStayLoggedIn());
+
+            // Clean up - delete the test file after the test
+            File file = new File(filename);
+            file.delete();
+        }
+    }
+
+
 
-}