test #200: created unit test for LoadingSpinner component (#625)

Author: tonyb650

components/LoadingSpinner/LoadingSpinner.test.tsx

@@ -0,0 +1,19 @@
+// Copyright (c) Gridiron Survivor.
+// Licensed under the MIT License.
+
+import { render, screen } from '@testing-library/react';
+import { LoadingSpinner } from './LoadingSpinner';
+
+describe('LoadingSpinner', () => {
+  it('renders without additional classes', () => {
+    render(<LoadingSpinner />);
+    expect(screen.getByTestId('loading-spinner')).toBeInTheDocument();
+  });
+
+  it('renders with additional classes when className is passed', () => {
+    render(<LoadingSpinner className="extra-classname" />);
+    expect(screen.getByTestId('loading-spinner')).toHaveClass(
+      'extra-classname',
+    );
+  });
+});