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20 changes: 18 additions & 2 deletions src/tests/Counter.test.js
Original file line number Diff line number Diff line change
@@ -1,22 +1,38 @@
// import necessary react testing library helpers here
import { render, screen, fireEvent } from '@testing-library/react';
// import the Counter component here
import Counter from '../components/Counter'; // Update the path as necessary


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 counterHeader = screen.getByText(/counter/i);
expect(counterHeader).toBeInTheDocument();
});

test('should render initial count with value of 0', () => {
// Complete the unit test below based on the objective in the line above
const countValue = screen.getByTestId('count');
expect(countValue).toHaveTextContent('0');
});

test('clicking + increments the count', () => {
// Complete the unit test below based on the objective in the line above
const incrementButton = screen.getByRole('button', { name: '+' });
fireEvent.click(incrementButton);
const countValue = screen.getByTestId('count');
expect(countValue).toHaveTextContent('1');
});

test('clicking - decrements the count', () => {
// Complete the unit test below based on the objective in the line above
const incrementButton = screen.getByRole('button', { name: '+' }); // increment first to avoid negative count, assuming that's not allowed
fireEvent.click(incrementButton); // count is now 1
const decrementButton = screen.getByRole('button', { name: '-' });
fireEvent.click(decrementButton); // decrement back to 0
const countValue = screen.getByTestId('count');
expect(countValue).toHaveTextContent('0');
});