Create new tests of Powerball table using new config

tests/test_powerball.py

@@ -0,0 +1,66 @@
+from datetime import datetime
+from sqlite3 import IntegrityError
+
+from conftest import PowerballDraw
+
+
+def test_create_powerball_draw(db_session) -> None:
+    """add a record"""
+    date = datetime(2010, 2, 3).date()
+    new_record = PowerballDraw(draw_date=date, main_ball1=17, main_ball2=22, main_ball3=36, main_ball4=37,
+           main_ball5=52, powerball=24, power_play=2)
+    db_session.add(new_record)
+    db_session.commit()
+
+    # verify the record exists
+    record = db_session.query(PowerballDraw).filter_by(draw_date=date).first()
+    assert record is not None
+    assert record == new_record
+
+
+def test_powerball_draw_isolation(db_session) -> None:
+    """query for all records in the database"""
+    draws = db_session.query(PowerballDraw).all()
+    assert len(draws) == 0
+
+
+def test_powerball_draw_by_date_blank(db_session) -> None:
+    """query for all powerball records with a blank date"""
+    blank_results = db_session.query(PowerballDraw).filter_by(draw_date='').all()
+    assert len(blank_results) == 0
+
+
+def test_powerball_draw_integrity(db_session) -> None:
+    """ensure that duplicate records cannot be inserted"""
+    date = datetime(2010, 2, 3).date()
+    new_record = PowerballDraw(draw_date=date, main_ball1=17, main_ball2=22, main_ball3=36, main_ball4=37,
+           main_ball5=52, powerball=24, power_play=2)
+
+    try:
+        # insert a new record
+        db_session.add(new_record)
+        db_session.commit()
+
+        # try inserting the same record again
+        db_session.add(new_record)
+        db_session.commit()
+    except IntegrityError:
+        assert True
+
+
+def test_powerball_draw_repr_and_str(db_session) -> None:
+    """test the __repr__ and __str__ methods of PowerballDraw"""
+    date = datetime(2010, 2, 3).date()
+    new_record = PowerballDraw(draw_date=date, main_ball1=17, main_ball2=22, main_ball3=36, main_ball4=37,
+           main_ball5=52, powerball=24, power_play=2)
+
+    # insert a new record
+    db_session.add(new_record)
+    db_session.commit()
+
+    # query the record
+    record = db_session.query(PowerballDraw).filter_by(draw_date=date).first()
+
+    # compare the str and repr values of each
+    assert str(record) == str(new_record)
+    assert repr(record) == repr(new_record)