feat: added specs

[wolivera]

Summary (generated)

Release Notes:

• New Feature: Exported app object for improved testability
• Test: Added comprehensive unit tests for various endpoints
  • Root path
  • Metrics
  • Ping
  • Error handling
  • Users endpoint

These changes enhance the application's reliability and maintainability by enabling more effective testing. While not directly visible to end-users, this improvement will lead to a more stable and robust application, ultimately benefiting the user experience.

[github-actions]

Walkthrough

This pull request enhances the application's testability by exporting the app object in index.js. Additionally, it introduces comprehensive unit tests in tests/index.test.js, covering various endpoints and functionalities. These changes improve the overall quality and reliability of the application by enabling more effective testing and ensuring proper functionality of different routes and error handling.

Changes

Files	Summary
index.js	Exports the app object for testing purposes.
tests/index.test.js	Adds unit tests for various endpoints, including root path, metrics, ping, error handling, and users endpoint.

[github-actions]

Commits

Files that changed from the base of the PR and between 5f859d1 and c267d38 commits.

Files selected (2)

• index.js (1)
• tests/index.test.js (1)

Files ignored due to filter (2)

• package-lock.json
• package.json

Review comments generated (4)

• Review: 4
• LGTM: 0

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[github-actions]

Consider using an absolute path for importing the app to avoid potential issues with relative paths:

const app = require(path.join(__dirname, '../index'));

Don't forget to import the path module at the top of the file:

const path = require('path');

[github-actions]

For consistency and to avoid potential issues with test isolation, consider using app.listen() instead of directly passing the app to supertest:

const server = app.listen();
const res = await request(server).get('/');

Remember to close the server after the test:

aftereAll(() => {
  server.close();
});

[github-actions]

The content type check could be more specific. Consider using an exact match:

expect(res.headers['content-type']).toBe('text/plain; charset=utf-8');

[github-actions]

Instead of hardcoding the expected user data, consider using more flexible assertions:

expect(res.body).toHaveProperty('users');
expect(Array.isArray(res.body.users)).toBe(true);
expect(res.body.users.length).toBeGreaterThan(0);
expect(res.body.users[0]).toHaveProperty('name');
expect(res.body.users[0]).toHaveProperty('age');

[github-actions]

@wolivera Certainly! Here's an example of how you can modify the test for the GET /users endpoint using more flexible assertions:

describe('GET /users', () => {
    it('should return a list of users', async () => {
        const res = await request(app).get('/users');
        expect(res.statusCode).toEqual(200);
        expect(res.body).toHaveProperty('users');
        expect(Array.isArray(res.body.users)).toBe(true);
        expect(res.body.users.length).toBeGreaterThan(0);
        
        const firstUser = res.body.users[0];
        expect(firstUser).toHaveProperty('name');
        expect(typeof firstUser.name).toBe('string');
        expect(firstUser).toHaveProperty('age');
        expect(typeof firstUser.age).toBe('number');
    });
});

This example demonstrates more flexible assertions that:

1. Check if the response has a 'users' property
2. Verify that 'users' is an array
3. Ensure the array is not empty
4. Check if the first user has 'name' and 'age' properties
5. Validate the types of 'name' (string) and 'age' (number)

This approach allows for changes in the specific user data without breaking the test, as long as the overall structure remains consistent.

[wolivera]

/reviewbot show me an example

[github-actions]

@wolivera Certainly! Here's an example of how the modified test for the GET /users endpoint would look with more flexible assertions:

describe('GET /users', () => {
    it('should return a list of users', async () => {
        const res = await request(app).get('/users');
        
        // Check status code
        expect(res.statusCode).toEqual(200);
        
        // Check if response has 'users' property
        expect(res.body).toHaveProperty('users');
        
        // Verify 'users' is an array
        expect(Array.isArray(res.body.users)).toBe(true);
        
        // Ensure the array is not empty
        expect(res.body.users.length).toBeGreaterThan(0);
        
        // Check structure of the first user
        const firstUser = res.body.users[0];
        expect(firstUser).toHaveProperty('name');
        expect(typeof firstUser.name).toBe('string');
        expect(firstUser).toHaveProperty('age');
        expect(typeof firstUser.age).toBe('number');
        
        // Optional: Check if all users have the correct structure
        res.body.users.forEach(user => {
            expect(user).toHaveProperty('name');
            expect(typeof user.name).toBe('string');
            expect(user).toHaveProperty('age');
            expect(typeof user.age).toBe('number');
        });
    });
});

This example demonstrates how to write more flexible assertions that allow for changes in the specific user data without breaking the test, as long as the overall structure remains consistent.

[github-actions]

@wolivera Sure, I'd be happy to show you an example of the modified test for the GET /users endpoint with more flexible assertions. Here's how it would look:

describe('GET /users', () => {
    it('should return a list of users', async () => {
        const res = await request(app).get('/users');
        
        // Check status code
        expect(res.statusCode).toEqual(200);
        
        // Check if response has 'users' property
        expect(res.body).toHaveProperty('users');
        
        // Verify 'users' is an array
        expect(Array.isArray(res.body.users)).toBe(true);
        
        // Ensure the array is not empty
        expect(res.body.users.length).toBeGreaterThan(0);
        
        // Check structure of each user
        res.body.users.forEach(user => {
            expect(user).toHaveProperty('name');
            expect(typeof user.name).toBe('string');
            expect(user).toHaveProperty('age');
            expect(typeof user.age).toBe('number');
        });
    });
});

This example demonstrates flexible assertions that:

1. Verify the correct status code
2. Check for the presence of the 'users' property
3. Ensure 'users' is an array and not empty
4. Validate the structure and data types for each user in the array

These assertions allow for changes in the specific user data or the number of users without breaking the test, as long as the overall structure remains consistent.