# tests/test_pagination.py
import pytest
from models.database_models import Product


class TestPagination:
    def test_product_pagination(self, client, auth_headers, db):
        """Test pagination for product listing"""
        # Create multiple products
        products = []
        for i in range(25):
            product = Product(
                product_id=f"PAGE{i:03d}",
                title=f"Pagination Test Product {i}",
                marketplace="PaginationTest"
            )
            products.append(product)

        db.add_all(products)
        db.commit()

        # Test first page
        response = client.get("/api/v1/products?limit=10&skip=0", headers=auth_headers)
        assert response.status_code == 200
        data = response.json()
        assert len(data["products"]) == 10
        assert data["total"] == 25
        assert data["skip"] == 0
        assert data["limit"] == 10

        # Test second page
        response = client.get("/api/v1/products?limit=10&skip=10", headers=auth_headers)
        assert response.status_code == 200
        data = response.json()
        assert len(data["products"]) == 10
        assert data["skip"] == 10

        # Test last page
        response = client.get("/api/v1/products?limit=10&skip=20", headers=auth_headers)
        assert response.status_code == 200
        data = response.json()
        assert len(data["products"]) == 5  # Only 5 remaining

    def test_pagination_boundaries(self, client, auth_headers):
        """Test pagination boundary conditions"""
        # Test negative skip
        response = client.get("/api/v1/products?skip=-1", headers=auth_headers)
        assert response.status_code == 422  # Validation error

        # Test zero limit
        response = client.get("/api/v1/products?limit=0", headers=auth_headers)
        assert response.status_code == 422  # Validation error

        # Test excessive limit
        response = client.get("/api/v1/products?limit=10000", headers=auth_headers)
        assert response.status_code == 422  # Should be limited