[BK] Create ProductType, ProductVariant, and Product Entities and APIs

[jimenezz22]

🚀 StarShop Pull Request

• Closes [BK]: Create ProductType, ProductVariant, and Product Entities and APIs #14
• Added tests (if necessary)
• Run tests
• Run formatting
• Evidence attached
• [] Commented the code

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📝 Changes description

1. Entities Created

• ProductType: Represents categories for products, including fields like id, name, and description.
• Product: Represents individual products, linked to ProductType. Fields include id, name, description, and a ManyToOne relationship with ProductType.
• ProductVariant: Represents specific variants of a product. Fields include id, sku, price, stock, and a ManyToOne relationship with Product.

2. API Services Implemented

• ProductTypeService: CRUD operations for ProductType entities.
• ProductService: CRUD operations for Product entities, ensuring proper linkage to ProductType.
• ProductVariantService: CRUD operations for ProductVariant entities, ensuring proper linkage to Product.

3. Unit Tests

Created unit tests for the following services:

• ProductTypeService
• ProductService
• ProductVariantService
• Tests validate the behavior of the CRUD methods and ensure proper error handling for invalid inputs.

4. Integration Tests

• Implemented integration tests to validate database interactions and relationships:
  • ProductType Integration Tests:
    • CRUD operations.
    • Fetching Products associated with a ProductType.
  • Product Integration Tests:
    • CRUD operations.
    • Ensuring proper linkage with ProductType.
  • ProductVariant Integration Tests:
    • CRUD operations.
    • Ensuring proper linkage with Product.

5. Additional Adjustments

• Updated ormconfig.ts to support testing with an in-memory SQLite database.
• Configured Jest to include integration test setup and teardown:
• Database synchronization before tests.
• Data cleanup after each test.

How to Test

Run the unit and integration tests with the following commands:

• npm test
  For a specific integration test:
• npm test src/tests/integration/services/.spec.ts

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📸 Evidence (A photo is required as evidence)

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⏰ Time spent breakdown

1 Day

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🌌 Comments

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Thank you for contributing to StarShop, we are glad that you have chosen us as your project of choice and we hope that you continue to contribute to this great project, so that together we can make our mark at the top!

[Villarley]

LGTM great work homie!