tests: add test cases for the button

lib/DonorsList/AddDonorButton.test.js

@@ -0,0 +1,35 @@
+import { MemoryRouter } from 'react-router-dom';
+import { render, screen } from '@testing-library/react';
+
+import AddDonorButton from './AddDonorButton';
+
+const mockOnAddDonors = jest.fn();
+
+const defaultProps = {
+  onAddDonors: mockOnAddDonors,
+  fields: {},
+  stripes: {},
+  name: 'donors',
+};
+
+const wrapper = ({ children }) => (
+  <MemoryRouter>
+    {children}
+  </MemoryRouter>
+);
+
+const renderComponent = (props = {}) => (render(
+  <AddDonorButton
+    {...defaultProps}
+    {...props}
+  />,
+  { wrapper },
+));
+
+describe('AddDonorButton', () => {
+  it('should render component', () => {
+    renderComponent();
+
+    expect(screen.getByText('stripes-acq-components.donors.noFindOrganizationPlugin')).toBeDefined();
+  });
+});