added tests for counter

src/tests/Counter.test.js

@@ -1,22 +1,31 @@
 // import necessary react testing library helpers here
 // import the Counter component here
 
+//Written by Seth Kennedy with help from OpenAI
+import { render, screen, fireEvent } from '@testing-library/react';
+import Counter from '../components/Counter';
+
 beforeEach(() => {
   // Render the Counter component here
+  render(<Counter/>);
 })
 
 test('renders counter message', () => {
-  // Complete the unit test below based on the objective in the line above
+  const welcomeMessage = screen.getByText(/Counter/i);
+  expect(welcomeMessage).toBeInTheDocument();
 });
 
 test('should render initial count with value of 0', () => {
-  // Complete the unit test below based on the objective in the line above
+  const initialCount = screen.getByText(/0/i);
+  expect(initialCount).toBeInTheDocument();
 });
 
 test('clicking + increments the count', () => {
-  // Complete the unit test below based on the objective in the line above
+  fireEvent.click(screen.getByText('+'));
+  expect(screen.getByTestId('count').textContent).toBe('1');
 });
 
 test('clicking - decrements the count', () => {
-  // Complete the unit test below based on the objective in the line above
+  fireEvent.click(screen.getByText("-"));
+  expect(screen.getByTestId('count').textContent).toBe('-1');
 });