Write a set of queries to go along with the event sourcing model

tests/queries/test_product_owners.py

@@ -0,0 +1,335 @@
+from datetime import datetime
+from pprint import pprint
+
+import pytest
+from sqlalchemy.orm import Session
+
+from dibbler.models import Product, User
+from dibbler.models.Transaction import Transaction
+from dibbler.queries import product_owners, product_owners_log, product_stock
+from tests.helpers import assign_times, assert_id_order_similar_to_time_order
+
+
+def insert_test_data(sql_session: Session) -> tuple[Product, User]:
+    user = User("testuser")
+    product = Product("1234567890123", "Test Product")
+
+    sql_session.add(user)
+    sql_session.add(product)
+
+    sql_session.commit()
+
+    return product, user
+
+
+def test_product_owners_unitilialized_product(sql_session: Session) -> None:
+    user = User("testuser")
+    sql_session.add(user)
+    sql_session.commit()
+
+    product = Product("1234567890123", "Uninitialized Product")
+
+    with pytest.raises(ValueError):
+        product_owners(sql_session, product)
+
+
+def test_product_owners_no_transactions(sql_session: Session) -> None:
+    product, _ = insert_test_data(sql_session)
+
+    pprint(product_owners_log(sql_session, product))
+
+    owners = product_owners(sql_session, product)
+    assert owners == []
+
+
+def test_product_owners_add_products(sql_session: Session) -> None:
+    product, user = insert_test_data(sql_session)
+
+    transactions = [
+        Transaction.add_product(
+            user_id=user.id,
+            product_id=product.id,
+            amount=30,
+            per_product=10,
+            product_count=3,
+        )
+    ]
+
+    assign_times(transactions)
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert_id_order_similar_to_time_order(transactions)
+
+    pprint(product_owners_log(sql_session, product))
+
+    owners = product_owners(sql_session, product)
+    assert owners == [user, user, user]
+
+
+def test_product_owners_add_and_buy_products(sql_session: Session) -> None:
+    product, user = insert_test_data(sql_session)
+    transactions = [
+        Transaction.add_product(
+            user_id=user.id,
+            product_id=product.id,
+            amount=30,
+            per_product=10,
+            product_count=3,
+        ),
+        Transaction.buy_product(
+            user_id=user.id,
+            product_id=product.id,
+            product_count=1,
+        ),
+    ]
+
+    assign_times(transactions)
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert_id_order_similar_to_time_order(transactions)
+
+    pprint(product_owners_log(sql_session, product))
+
+    owners = product_owners(sql_session, product)
+    assert owners == [user, user]
+
+
+def test_product_owners_add_and_throw_products(sql_session: Session) -> None:
+    product, user = insert_test_data(sql_session)
+    transactions = [
+        Transaction.add_product(
+            user_id=user.id,
+            product_id=product.id,
+            amount=40,
+            per_product=10,
+            product_count=4,
+        ),
+        Transaction.throw_product(
+            user_id=user.id,
+            product_id=product.id,
+            product_count=2,
+        ),
+    ]
+
+    assign_times(transactions)
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert_id_order_similar_to_time_order(transactions)
+
+    pprint(product_owners_log(sql_session, product))
+
+    owners = product_owners(sql_session, product)
+    assert owners == [user, user]
+
+
+def test_product_owners_multiple_users(sql_session: Session) -> None:
+    product, user1 = insert_test_data(sql_session)
+    user2 = User("testuser2")
+    sql_session.add(user2)
+    sql_session.commit()
+    transactions = [
+        Transaction.add_product(
+            user_id=user1.id,
+            product_id=product.id,
+            amount=20,
+            per_product=10,
+            product_count=2,
+        ),
+        Transaction.add_product(
+            user_id=user2.id,
+            product_id=product.id,
+            amount=30,
+            per_product=10,
+            product_count=3,
+        ),
+    ]
+
+    assign_times(transactions)
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert_id_order_similar_to_time_order(transactions)
+
+    pprint(product_owners_log(sql_session, product))
+
+    owners = product_owners(sql_session, product)
+    assert owners == [user2, user2, user2, user1, user1]
+
+
+def test_product_owners_adjust_stock_down(sql_session: Session) -> None:
+    product, user = insert_test_data(sql_session)
+
+    transactions = [
+        Transaction.add_product(
+            user_id=user.id,
+            product_id=product.id,
+            amount=50,
+            per_product=10,
+            product_count=5,
+        ),
+        Transaction.adjust_stock(
+            user_id=user.id,
+            product_id=product.id,
+            product_count=-2,
+        ),
+    ]
+
+    assign_times(transactions)
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert_id_order_similar_to_time_order(transactions)
+
+    pprint(product_owners_log(sql_session, product))
+
+    assert product_stock(sql_session, product) == 3
+
+    owners = product_owners(sql_session, product)
+    assert owners == [user, user, user]
+
+
+def test_product_owners_adjust_stock_up(sql_session: Session) -> None:
+    product, user = insert_test_data(sql_session)
+
+    transactions = [
+        Transaction.add_product(
+            user_id=user.id,
+            product_id=product.id,
+            amount=20,
+            per_product=10,
+            product_count=2,
+        ),
+        Transaction.adjust_stock(
+            user_id=user.id,
+            product_id=product.id,
+            product_count=3,
+        ),
+    ]
+
+    assign_times(transactions)
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert_id_order_similar_to_time_order(transactions)
+
+    pprint(product_owners_log(sql_session, product))
+
+    owners = product_owners(sql_session, product)
+    assert owners == [user, user, None, None, None]
+
+
+def test_product_owners_negative_stock(sql_session: Session) -> None:
+    product, user = insert_test_data(sql_session)
+
+    transactions = [
+        Transaction.add_product(
+            user_id=user.id,
+            product_id=product.id,
+            amount=10,
+            per_product=10,
+            product_count=1,
+        ),
+        Transaction.buy_product(
+            user_id=user.id,
+            product_id=product.id,
+            product_count=2,
+        ),
+    ]
+
+    assign_times(transactions)
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert_id_order_similar_to_time_order(transactions)
+
+    owners = product_owners(sql_session, product)
+    assert owners == []
+
+
+def test_product_owners_add_products_from_negative_stock(sql_session: Session) -> None:
+    product, user = insert_test_data(sql_session)
+
+    transactions = [
+        Transaction.buy_product(
+            user_id=user.id,
+            product_id=product.id,
+            product_count=2,
+        ),
+        Transaction.add_product(
+            user_id=user.id,
+            product_id=product.id,
+            amount=30,
+            per_product=10,
+            product_count=3,
+        ),
+    ]
+
+    assign_times(transactions)
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert_id_order_similar_to_time_order(transactions)
+
+    pprint(product_owners_log(sql_session, product))
+
+    owners = product_owners(sql_session, product)
+    assert owners == [user]
+
+
+def test_product_owners_interleaved_users(sql_session: Session) -> None:
+    product, user1 = insert_test_data(sql_session)
+    user2 = User("testuser2")
+    sql_session.add(user2)
+    sql_session.commit()
+
+    transactions = [
+        Transaction.add_product(
+            user_id=user1.id,
+            product_id=product.id,
+            amount=20,
+            per_product=10,
+            product_count=2,
+        ),
+        Transaction.add_product(
+            user_id=user2.id,
+            product_id=product.id,
+            amount=30,
+            per_product=10,
+            product_count=3,
+        ),
+        Transaction.buy_product(
+            user_id=user1.id,
+            product_id=product.id,
+            product_count=1,
+        ),
+        Transaction.add_product(
+            user_id=user1.id,
+            product_id=product.id,
+            amount=10,
+            per_product=10,
+            product_count=1,
+        ),
+    ]
+
+    assign_times(transactions)
+
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert_id_order_similar_to_time_order(transactions)
+
+    pprint(product_owners_log(sql_session, product))
+
+    owners = product_owners(sql_session, product)
+    assert owners == [user1, user2, user2, user2, user1]