fixup! WIP

tests/queries/test_product_stock.py

@@ -0,0 +1,143 @@
+from datetime import datetime
+
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from dibbler.models import Product, Transaction, User
+from dibbler.queries.product_stock import product_stock
+
+
+def insert_test_data(sql_session: Session) -> None:
+    user1 = User("Test User 1")
+
+    sql_session.add(user1)
+    sql_session.commit()
+
+
+def test_product_stock_basic_history(sql_session: Session) -> None:
+    insert_test_data(sql_session)
+
+    user1 = sql_session.scalars(select(User).where(User.name == "Test User 1")).one()
+
+    product = Product("1234567890123", "Test Product")
+    sql_session.add(product)
+    sql_session.commit()
+
+    transactions = [
+        Transaction.add_product(
+            time=datetime(2023, 10, 1, 12, 0, 0),
+            amount=10,
+            per_product=10,
+            user_id=user1.id,
+            product_id=product.id,
+            product_count=1,
+        ),
+    ]
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert product_stock(sql_session, product) == 1
+
+
+def test_product_stock_complex_history(sql_session: Session) -> None:
+    insert_test_data(sql_session)
+
+    user1 = sql_session.scalars(select(User).where(User.name == "Test User 1")).one()
+
+    product = Product("1234567890123", "Test Product")
+    sql_session.add(product)
+    sql_session.commit()
+
+    transactions = [
+        Transaction.add_product(
+            time=datetime(2023, 10, 1, 13, 0, 0),
+            amount=27 * 2,
+            per_product=27,
+            user_id=user1.id,
+            product_id=product.id,
+            product_count=2,
+        ),
+        Transaction.buy_product(
+            time=datetime(2023, 10, 1, 13, 0, 1),
+            amount=27 * 3,
+            user_id=user1.id,
+            product_id=product.id,
+            product_count=3,
+        ),
+        Transaction.add_product(
+            time=datetime(2023, 10, 1, 13, 0, 2),
+            amount=50 * 4,
+            per_product=50,
+            user_id=user1.id,
+            product_id=product.id,
+            product_count=4,
+        ),
+        Transaction.adjust_stock(
+            time=datetime(2023, 10, 1, 15, 0, 0),
+            user_id=user1.id,
+            product_id=product.id,
+            product_count=3,
+        ),
+        Transaction.adjust_stock(
+            time=datetime(2023, 10, 1, 15, 0, 1),
+            user_id=user1.id,
+            product_id=product.id,
+            product_count=-2,
+        ),
+    ]
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert product_stock(sql_session, product) == 2 - 3 + 4 + 3 - 2
+
+
+def test_product_stock_no_transactions(sql_session: Session) -> None:
+    insert_test_data(sql_session)
+
+    product = Product("1234567890123", "Test Product")
+    sql_session.add(product)
+    sql_session.commit()
+
+    assert product_stock(sql_session, product) == 0
+
+
+def test_negative_product_stock(sql_session: Session) -> None:
+    insert_test_data(sql_session)
+
+    user1 = sql_session.scalars(select(User).where(User.name == "Test User 1")).one()
+
+    product = Product("1234567890123", "Test Product")
+    sql_session.add(product)
+    sql_session.commit()
+
+    transactions = [
+        Transaction.add_product(
+            time=datetime(2023, 10, 1, 14, 0, 0),
+            amount=50,
+            per_product=50,
+            user_id=user1.id,
+            product_id=product.id,
+            product_count=1,
+        ),
+        Transaction.buy_product(
+            time=datetime(2023, 10, 1, 14, 0, 1),
+            amount=50,
+            user_id=user1.id,
+            product_id=product.id,
+            product_count=2,
+        ),
+        Transaction.adjust_stock(
+            time=datetime(2023, 10, 1, 16, 0, 0),
+            user_id=user1.id,
+            product_id=product.id,
+            product_count=-1,
+        ),
+    ]
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    # The stock should be negative because we added and bought the product
+    assert product_stock(sql_session, product) == 1 - 2 - 1