diff --git a/webapp/src/components/tests/AddUser.test.js b/webapp/src/components/tests/AddUser.test.js
index 2613dd5..fe76461 100644
--- a/webapp/src/components/tests/AddUser.test.js
+++ b/webapp/src/components/tests/AddUser.test.js
@@ -4,91 +4,79 @@ import axios from 'axios';
 import MockAdapter from 'axios-mock-adapter';
 import AddUser from '../AddUser';
 
-    const mockAxios = new MockAdapter(axios);
-    const mockedUsernames = ['existingUser'];
-    mockAxios.onGet(`http://localhost:8000/getUsernames`).reply(200, { usernames: mockedUsernames });
-
-    const usernameInput = screen.getByLabelText(/Usuario/i);
-    const passwordInput = screen.getByLabelText(/Contraseña/i);
-    const addUserButton = screen.getByRole('button', { name: /Crear/i });
+const mockAxios = new MockAdapter(axios);
 
 describe('AddUser component', () => {
   beforeEach(() => {
     mockAxios.reset();
   });
 
-  it('should add user successfully', async () => {
-    render(<AddUser />);
-    // Mock the axios.post request to simulate a successful response
+  const renderComponent = () => render(<AddUser />);
+
+  const setupMockedUsernames = (usernames) => {
+    mockAxios.onGet(`http://localhost:8000/getUsernames`).reply(200, { usernames });
+  };
+
+  const setupSuccessfulResponse = () => {
     mockAxios.onPost('http://localhost:8000/adduser').reply(200);
+  };
 
-    // Simulate user input
-    fireEvent.change(usernameInput, { target: { value: 'testUser' } });
-    fireEvent.change(passwordInput, { target: { value: 'testPassword' } });
+  const setupErrorResponse = (statusCode, errorMessage) => {
+    mockAxios.onPost('http://localhost:8000/adduser').reply(statusCode, { error: errorMessage });
+  };
 
-    // Trigger the add user button click
-    fireEvent.click(addUserButton);
+  const typeUsernameAndPassword = (username, password) => {
+    const usernameInput = screen.getByLabelText(/Usuario/i);
+    const passwordInput = screen.getByLabelText(/Contraseña/i);
+    fireEvent.change(usernameInput, { target: { value: username } });
+    fireEvent.change(passwordInput, { target: { value: password } });
+  };
+
+  const clickCreateUserButton = () => {
+    const createUserButton = screen.getByRole('button', { name: /Crear/i });
+    fireEvent.click(createUserButton);
+  };
 
-    // Wait for the Snackbar to be open
+  it('should add user successfully', async () => {
+    renderComponent();
+    setupSuccessfulResponse();
+    typeUsernameAndPassword('testUser', 'testPassword');
+    clickCreateUserButton();
     await waitFor(() => {
       expect(screen.getByText(/Usuario creado correctamente/i)).toBeInTheDocument();
     });
   });
 
   it('should handle error when adding user', async () => {
-    render(<AddUser />);
-    // Mock the axios.post request to simulate an error response
-    mockAxios.onPost('http://localhost:8000/adduser').reply(500, { error: 'Internal Server Error' });
-
-    // Simulate user input
-    fireEvent.change(usernameInput, { target: { value: 'testUser' } });
-    fireEvent.change(passwordInput, { target: { value: 'testPassword' } });
-
-    // Trigger the add user button click
-    fireEvent.click(addUserButton);
-
-    // Wait for the error Snackbar to be open
+    renderComponent();
+    setupErrorResponse(500, 'Internal Server Error');
+    typeUsernameAndPassword('testUser', 'testPassword');
+    clickCreateUserButton();
     await waitFor(() => {
       expect(screen.getByText(/Error: Internal Server Error/i)).toBeInTheDocument();
     });
   });
 
-  it('should show error of password too short', async () => {
-    render(<AddUser />);
-    // Mock the axios.post request to simulate a successful response
-    mockAxios.onPost('http://localhost:8000/adduser').reply(200);
-
-    // Simulate user input
-    fireEvent.change(usernameInput, { target: { value: 'testUser' } });
-    fireEvent.change(passwordInput, { target: { value: 'sh' } });
-
-    // Trigger the add user button click
-    fireEvent.click(addUserButton);
-
-    // Wait for the Snackbar to be open
+  it('should show error message for short password', async () => {
+    renderComponent();
+    setupMockedUsernames([]);
+    setupSuccessfulResponse();
+    typeUsernameAndPassword('testUser', 'sh');
+    clickCreateUserButton();
     await waitFor(() => {
       expect(screen.getByText(/Error: Credenciales incorrectas. La contraseña debe contener al menos 8 caracteres/i)).toBeInTheDocument();
     });
   });
 
-  it('should show error of repeated user', async () => {
-    render(<AddUser />);
-    // Mock the axios.post request to simulate a successful response
-    mockAxios.onPost('http://localhost:8000/adduser').reply(200);
-
-    // Simulate user input
-    fireEvent.change(usernameInput, { target: { value: 'existingUser' } });
-    fireEvent.change(passwordInput, { target: { value: 'passwordCorrect' } });
-
-    // Trigger the add user button click
-    fireEvent.click(addUserButton);
-
-    // Wait for the Snackbar to be open
+  it('should show error message for repeated username', async () => {
+    renderComponent();
+    setupMockedUsernames(['existingUser']);
+    setupSuccessfulResponse();
+    typeUsernameAndPassword('existingUser', 'passwordCorrect');
+    clickCreateUserButton();
     await waitFor(() => {
       expect(screen.getByText(/Error: Credenciales incorrectas. El nombre de usuario esta en uso/i)).toBeInTheDocument();
     });
   });
 
-
 });
-