Switzerland Bank - REST API

Switzerland Bank is a simulation of a digital bank developed with Spring Boot and Java. The project offers a solution to make payments through PIX, manage customer profiles, view the statement, and request credit and debit cards. With Switzerland Bank, users can enjoy a modern and efficient banking experience.

The project was developed as part of the disciplines of Software Management and Quality and Models, Methods and Techniques of Software Engineering, of the Computer Science course. The objective of the project was to take any open source project and refactor it, including (if necessary) GRASP and SOLID principles, and Design Patterns; in addition, perform unit and integration tests, and ensure at least 80% code coverage.

The URL of Switzerland Bank before the refactorings and tests: https://github.com/kauassilva/Switzerland_Bank

Technologies

• Java 17
• Spring Boot 3.1.5
  • Spring Boot Starter Data JPA
  • Spring Boot Starter Web
  • H2
  • Spring Boot Starter Validation
  • Spring Boot Starter Test

Refactorings

A major refactoring done was to separate the web pages from the API so that the API would return JSON, instead of, a HTML page.

GRASP principles used

• Controller - Assigns the responsibility of handling system events to a class that represents a global use case scenario of the system.
• Low Coupling - Determines that classes should not depend on concrete objects but on abstractions, to allow for changes without impact.
• Information Expert - Determines when we should delegate responsibility to another object that is an expert in that domain.
• High Cohesion - This principle determines that classes should focus only on their responsibility.

SOLID principles used

• Single Responsibility Principle - Determines that a class should have one, and only one, reason to change.
• Open-Closed Principle - Determines that objects or entities should be open for extension, but closed for modification.
• Dependency Inversion Principle - Determines that depend on abstractions and not on implementations.

Tests

Unit and integration tests were performed on the controller, service and repositories layers. This totaled 186 tests, and a coverage of 93.1% of the code.

186 Tests

Coverage of 93.1%

Team

Amanda Meneghini	Breno Luiz	Jullia Kathelyn	Kauã dos Santos