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

tests/queries/test_current_penalty.py

@@ -0,0 +1,42 @@
+from datetime import datetime
+
+from sqlalchemy.orm import Session
+
+from dibbler.models import Transaction, User
+from dibbler.models.Transaction import (
+    DEFAULT_PENALTY_MULTIPLIER_PERCENTAGE,
+    DEFAULT_PENALTY_THRESHOLD,
+)
+from dibbler.queries import current_penalty
+
+
+def test_current_penalty_no_history(sql_session: Session) -> None:
+    assert current_penalty(sql_session) == (
+        DEFAULT_PENALTY_THRESHOLD,
+        DEFAULT_PENALTY_MULTIPLIER_PERCENTAGE,
+    )
+
+
+def test_current_penalty_with_history(sql_session: Session) -> None:
+    user = User("Admin User")
+    sql_session.add(user)
+    sql_session.commit()
+
+    transactions = [
+        Transaction.adjust_penalty(
+            time=datetime(2023, 10, 1, 10, 0, 0),
+            penalty_threshold=-200,
+            penalty_multiplier_percent=150,
+            user_id=user.id,
+        ),
+        Transaction.adjust_penalty(
+            time=datetime(2023, 10, 2, 10, 0, 0),
+            penalty_threshold=-300,
+            penalty_multiplier_percent=200,
+            user_id=user.id,
+        ),
+    ]
+    sql_session.add_all(transactions)
+    sql_session.commit()
+
+    assert current_penalty(sql_session) == (-300, 200)