Add tests

frontend/libs/studio-components/src/components/StudioAlert/StudioAlert.test.tsx

@@ -0,0 +1,16 @@
+import React from 'react';
+import { render, screen } from '@testing-library/react';
+import type { StudioAlertProps } from './StudioAlert';
+import { StudioAlert } from './StudioAlert';
+
+describe('StudioAlert', () => {
+  it('should render the component', () => {
+    renderTestAlert({ severity: 'danger' });
+    const studioAlert = screen.getByText('Feil');
+    expect(studioAlert).toBeInTheDocument();
+  });
+});
+
+const renderTestAlert = (props: Partial<StudioAlertProps> = {}) => {
+  render(<StudioAlert {...props} />);
+};