add unit tests

tests/components/Form.test.tsx

@@ -0,0 +1,28 @@
+import { render, screen } from '@testing-library/react';
+import { describe, expect, it } from 'vitest';
+import { Form } from '../../src/components/Form';
+
+describe('Form', () => {
+    it('renders title, title actions and children', () => {
+        render(
+            <Form title="User Details" titleBarRight={<button type="button">Action</button>}>
+                <div>Form child</div>
+            </Form>,
+        );
+
+        expect(screen.getByText('User Details')).toBeInTheDocument();
+        expect(screen.getByRole('button', { name: 'Action' })).toBeInTheDocument();
+        expect(screen.getByText('Form child')).toBeInTheDocument();
+    });
+
+    it('supports custom class names and optional title actions', () => {
+        const { container } = render(
+            <Form title="No Actions" className="form-custom">
+                <div>Child</div>
+            </Form>,
+        );
+
+        expect(container.firstElementChild).toHaveClass('form-custom');
+        expect(screen.queryByRole('button')).not.toBeInTheDocument();
+    });
+});