fixup! WIP

tests/queries/test_product_price.py

@@ -0,0 +1,173 @@
+from datetime import datetime
+
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from dibbler.models import Product, Transaction, User
+from dibbler.queries.product_price import product_price
+
+
+def insert_test_data(sql_session: Session) -> None:
+    # Add users
+    user1 = User("Test User 1")
+    user2 = User("Test User 2")
+
+    sql_session.add_all([user1, user2])
+    sql_session.commit()
+
+    # Add products
+    product1 = Product("1234567890123", "Test Product 1")
+    product2 = Product("9876543210987", "Test Product 2")
+    product3 = Product("1111111111111", "Test Product 3")
+    sql_session.add_all([product1, product2, product3])
+    sql_session.commit()
+
+    # Add transactions
+    transactions = [
+        Transaction.adjust_balance(
+            time=datetime(2023, 10, 1, 10, 0, 0),
+            amount=100,
+            user_id=user1.id,
+        ),
+        Transaction.adjust_balance(
+            time=datetime(2023, 10, 1, 10, 0, 1),
+            amount=50,
+            user_id=user2.id,
+        ),
+        Transaction.adjust_balance(
+            time=datetime(2023, 10, 1, 10, 0, 2),
+            amount=-50,
+            user_id=user1.id,
+        ),
+        Transaction.add_product(
+            time=datetime(2023, 10, 1, 12, 0, 0),
+            amount=27 * 2,
+            per_product=27,
+            product_count=2,
+            user_id=user1.id,
+            product_id=product1.id,
+        ),
+        Transaction.buy_product(
+            time=datetime(2023, 10, 1, 12, 0, 1),
+            amount=27,
+            product_count=1,
+            user_id=user2.id,
+            product_id=product1.id,
+        ),
+        Transaction.adjust_stock(
+            time=datetime(2023, 10, 1, 12, 0, 2),
+            product_count=3,
+            user_id=user1.id,
+            product_id=product1.id,
+        ),
+        Transaction.adjust_stock(
+            time=datetime(2023, 10, 1, 12, 0, 3),
+            product_count=-2,
+            user_id=user1.id,
+            product_id=product1.id,
+        ),
+        Transaction.add_product(
+            time=datetime(2023, 10, 1, 12, 0, 4),
+            amount=50,
+            per_product=50,
+            product_count=1,
+            user_id=user1.id,
+            product_id=product3.id,
+        ),
+        Transaction.buy_product(
+            time=datetime(2023, 10, 1, 12, 0, 5),
+            amount=50,
+            product_count=1,
+            user_id=user1.id,
+            product_id=product3.id,
+        ),
+        Transaction.adjust_balance(
+            time=datetime(2023, 10, 1, 12, 0, 6),
+            amount=1000,
+            user_id=user1.id,
+        ),
+    ]
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+
+def test_product_price(sql_session: Session) -> None:
+    insert_test_data(sql_session)
+
+    product1 = sql_session.scalars(select(Product).where(Product.name == "Test Product 1")).one()
+    assert product_price(sql_session, product1) == 27
+
+
+def test_product_price_no_transactions(sql_session: Session) -> None:
+    insert_test_data(sql_session)
+
+    product2 = sql_session.scalars(select(Product).where(Product.name == "Test Product 2")).one()
+    assert product_price(sql_session, product2) == 0
+
+
+def test_product_price_sold_out(sql_session: Session) -> None:
+    insert_test_data(sql_session)
+
+    product3 = sql_session.scalars(select(Product).where(Product.name == "Test Product 3")).one()
+    assert product_price(sql_session, product3) == 50
+
+
+def test_product_price_interest(sql_session: Session) -> None:
+    raise NotImplementedError("This test is not implemented yet.")
+
+
+def test_product_price_changing_interest(sql_session: Session) -> None:
+    raise NotImplementedError("This test is not implemented yet.")
+
+
+# Price goes up and gets rounded up to the next integer
+def test_product_price_round_up_from_below(sql_session: Session) -> None:
+    raise NotImplementedError("This test is not implemented yet.")
+
+
+# Price goes down and gets rounded up to the next integer
+def test_product_price_round_up_from_above(sql_session: Session) -> None:
+    raise NotImplementedError("This test is not implemented yet.")
+
+
+def test_product_price_with_negative_stock_single_addition(sql_session: Session) -> None:
+    insert_test_data(sql_session)
+
+    product1 = sql_session.scalars(select(Product).where(Product.name == "Test Product 1")).one()
+    user1 = sql_session.scalars(select(User).where(User.name == "Test User 1")).one()
+
+    transaction = Transaction.buy_product(
+        time=datetime(2023, 10, 1, 13, 0, 0),
+        amount=27 * 5,
+        product_count=10,
+        user_id=user1.id,
+        product_id=product1.id,
+    )
+
+    sql_session.add(transaction)
+    sql_session.commit()
+
+    product1_price = product_price(sql_session, product1)
+    assert product1_price == 27
+
+    transaction = Transaction.add_product(
+        time=datetime(2023, 10, 1, 13, 0, 1),
+        amount=22,
+        per_product=22,
+        product_count=1,
+        user_id=user1.id,
+        product_id=product1.id,
+    )
+
+    sql_session.add(transaction)
+    sql_session.commit()
+
+    # Stock went subzero, price should be the last added product price
+    product1_price = product_price(sql_session, product1)
+    assert product1_price == 22
+
+
+# TODO: what happens when stock is still negative and yet new products are added?
+def test_product_price_with_negative_stock_multiple_additions(sql_session: Session) -> None:
+    raise NotImplementedError("This test is not implemented yet.")