sales and receipt of products

Create supplies, add, update and delete products in document, check triggers. Fix triggers

Testing: Supplier create and update service, Separate function and session for error exception

Testing: Add and edit product charactersitic

Testing Product service: create, update, delete

Testing characteristics

Testing Category product

Testing authentication and get user by token

Testing registration

conftest, fixtures: prepare database

Tests: Triggers

Tests: Create trigger functions

Tests: Create and drop tables

install pytest and pytest-asyncio.

Test environment settings.

Fixed the Cyclic Import bug.

Cart detail

ProductInCart: Limit quantity greater than zero

Check constraint for ProductCart by quantity

edit and delete product in cart

product add to cart

Cart, CartProduct

trigger order table is_active,change product quantity

Order create

Drop station

Error handling supplies create

Change database structure: Drop warehouse. Minor fixes, fix triggers. Product quantity

Distinctions by products & characteristic. Minor fixes

Change structure db, add index. Add tables orders

delete supplies product, correction trigger

Handling errors when deleting and updating a supply document