This project was made by @JonathanJRodriguez for Innovacción Virtual - Backend JS - Code challenge week 4.

It was developed following the TDD methodology (Test driven development).

Estimated time to develop: 16 hours (including Documentation)

Time taken to develop: 5 hours

• Jest: Unit testing
• ESLint: Style
• Express: Create Server

1. Get all students from the DB
2. Get all emails from the students with certification haveCertification = true
3. Get all students with credits > 500 (Feature enhanced to be credits > userInput)

The project is divided in 4 main files and the database file, these files are connected as follows:

flowchart TD;
    id1[(students-db)]-->id2(Reader)
    id2<-->id3(PartnersController);
    id4(PartnerService)<-->id3;
    id3<-->server;

Reader.

This class receives a path and returns a list with all elements of a JSON file.

classDiagram
class Reader{
    +static readJsonFile(path)
}

PartnerService.

This class does all the operations required by the features.

classDiagram
class PartnerService{
    +static getAllStudents(partners)
    +static getEmails(partners)
    +static getAllCertifications(partners)
    +static getEmailsWithCertification(partners)
    +static getStudentsWithCredits(partners,credits)
}

PartnersController.

This class exposes the requested methods to the API, acting as an isolation/concentration layer between logic and server.

classDiagram
class PartnersController{
    +static getAllStudents()
    +static getEmailsWithCertification()
    +static getStudentsWithCredits(credits)
}

Server

The server is a basic API made with Express that contains four endpoints and listens port 3000.

For the Unit Testing it uses Jest version 26, the repository has a Github Action that runs the test in every push or online commit.

This project was developed using the Github issues as To Do tasks in a Github project (publicly available in this repository), to demonstrate the functionality of these tools.