Added 100% test coverage

src/tests/Counter.test.js

@@ -1,22 +1,32 @@
-// import necessary react testing library helpers here
-// import the Counter component here
+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 counterHeading = screen.getByRole('heading', {name: /Counter/i});
+  expect(counterHeading).toBeInTheDocument();
 });
 
 test('should render initial count with value of 0', () => {
-  // Complete the unit test below based on the objective in the line above
+  const counterCount = screen.getByTestId('count');
+  expect(counterCount).toHaveTextContent('0');
 });
 
 test('clicking + increments the count', () => {
-  // Complete the unit test below based on the objective in the line above
+  const increment = screen.getByRole('button', {name: '+'});
+  fireEvent.click(increment);
+  const counterCount = screen.getByTestId('count');
+  expect(counterCount).toHaveTextContent('1');
 });
 
 test('clicking - decrements the count', () => {
-  // Complete the unit test below based on the objective in the line above
+  const increment = screen.getByRole('button', {name: '+'});
+  fireEvent.click(increment);
+  const decrement = screen.getByRole('button', {name: '-'});
+  fireEvent.click(decrement);
+  const counterCount = screen.getByTestId('count');
+  expect(counterCount).toHaveTextContent('0');
 });