Create biometricAuth.test.js

app/tests/unit_test/biometricAuth.test.js

@@ -0,0 +1,18 @@
+import React from 'react';
+import { render, fireEvent } from '@testing-library/react-native';
+import BiometricAuth from './BiometricAuth';
+
+describe('BiometricAuth', () => {
+  it('renders correctly', () => {
+    const { getByText } = render(<BiometricAuth />);
+    expect(getByText('Authenticate with Biometrics')).toBeTruthy();
+  });
+
+  it('calls onAuthenticate when button is pressed', () => {
+    const onAuthenticate = jest.fn();
+    const { getByText } = render(<BiometricAuth onAuthenticate={onAuthenticate} />);
+    const button = getByText('Authenticate');
+    fireEvent.press(button);
+    expect(onAuthenticate).toHaveBeenCalledTimes(1);
+  });
+});