Wizard: Add test for file system configuration buttons

This commit adds a test that checks the new behavior of the file system
configuration buttons by adding duplicate mount points and verifying
that errors do not appear until the next button is clicked.

src/test/Components/CreateImageWizard/CreateImageWizard.test.js

@@ -669,6 +669,73 @@ describe('Step Registration', () => {
   });
 });
 
+describe('Step File system configuration', () => {
+  const setUp = async () => {
+    history = renderWithReduxRouter(<CreateImageWizard />).history;
+
+    // select aws as upload destination
+    const awsTile = screen.getByTestId('upload-aws');
+    awsTile.click();
+    getNextButton().click();
+
+    // aws step
+    userEvent.type(screen.getByTestId('aws-account-id'), '012345678901');
+    getNextButton().click();
+    // skip registration
+    await screen.findByRole('textbox', {
+      name: 'Select activation key',
+    });
+
+    const registerLaterRadio = screen.getByLabelText('Register later');
+    userEvent.click(registerLaterRadio);
+    getNextButton().click();
+  };
+
+  test('Error validation occurs upon clicking next button', async () => {
+    await setUp();
+
+    const nextButton = getNextButton();
+
+    const manuallyConfigurePartitions = screen.getByText(
+      /manually configure partitions/i
+    );
+    manuallyConfigurePartitions.click();
+
+    const addPartition = await screen.findByTestId('file-system-add-partition');
+
+    // Create duplicate partitions
+    addPartition.click();
+    addPartition.click();
+
+    expect(nextButton).toBeEnabled();
+
+    // Clicking next causes errors to appear
+    nextButton.click();
+
+    const mountPointWarning = screen.getByRole('heading', {
+      name: /danger alert: duplicate mount points: all mount points must be unique\. remove the duplicate or choose a new mount point\./i,
+      hidden: true,
+    });
+
+    const mountPointAlerts = screen.getAllByRole('heading', {
+      name: /danger alert: duplicate mount point\./i,
+    });
+
+    const tbody = screen.getByTestId('file-system-configuration-tbody');
+    const rows = within(tbody).getAllByRole('row');
+    expect(rows).toHaveLength(3);
+
+    // Change mountpoint of final row to /var, resolving errors
+    within(rows[2]).getAllByRole('button', { name: 'Options menu' })[0].click();
+    within(rows[2]).getByRole('option', { name: '/var' }).click();
+
+    await waitFor(() => expect(mountPointWarning).not.toBeInTheDocument());
+    await waitFor(() => expect(mountPointAlerts[0]).not.toBeInTheDocument());
+    await waitFor(() => expect(mountPointAlerts[1]).not.toBeInTheDocument());
+    await waitFor(() => expect(nextButton).toBeEnabled());
+  });
+});
+
 describe('Step Packages', () => {
   const setUp = async () => {
     history = renderWithReduxRouter(<CreateImageWizard />).history;