Testing and Debugging

This outline provides guidance on testing and debugging the codebase for the demo-recipes project.

Testing

The demo-recipes project utilizes Jest for unit testing. Jest is a JavaScript testing framework that provides a comprehensive set of features for writing and running tests.

Test Files

Test files are located in the __tests__ directory within each module. Each test file should focus on testing a specific component or functionality.

Example Test File:

// __tests__/RecipeCard.test.js
          
          import React from 'react';
          import { render, screen } from '@testing-library/react';
          import RecipeCard from '../components/RecipeCard';
          
          describe('RecipeCard Component', () => {
            it('renders the recipe name', () => {
              const recipe = { name: 'Chocolate Chip Cookies' };
              render(<RecipeCard recipe={recipe} />);
              expect(screen.getByText('Chocolate Chip Cookies')).toBeInTheDocument();
            });
          });
          

Running Tests

To run all tests, execute the following command in the project root:

npm test
          

You can also run specific tests using the --testNamePattern flag:

npm test --testNamePattern=RecipeCard
          

Code Coverage

Jest provides built-in code coverage reporting. To generate a code coverage report, run the following command:

npm test --coverage
          

The code coverage report will be generated in the coverage directory.

Debugging

The demo-recipes project uses the Chrome Developer Tools for debugging.

Breakpoints

Set breakpoints in the code to pause execution and inspect the state of the application.

Console Logging

Utilize console.log statements to print values and debug code logic.

Debugging Tools

The Chrome Developer Tools offer a wide range of debugging tools, including:

• Sources: View and debug source code.
• Console: Interact with the browser console.
• Network: Monitor network requests and responses.
• Performance: Analyze application performance.

Debugging Tips

• Isolate the issue: Narrow down the problem by commenting out code sections.
• Use the debugger: Set breakpoints to step through the code execution.
• Log relevant information: Print values to the console to understand the code state.
• Review error messages: Carefully examine error messages for clues about the issue.