Proper basic tests for db.Submission methods

Testing for Submission.increment, Submission.decrement with exceptions
Randomized database generation fixture with query test

tests/bot/test_db.py

@@ -1,10 +1,12 @@
-import datetime
+import random
 from itertools import count
+from typing import Generator
 
 import pytest
 from sqlalchemy.orm import Session, sessionmaker
 
-from bot.models import Guild, Period, Submission
+from bot import exceptions
+from bot.models import Guild, Period, PeriodStates, Submission
 from main import load_db
 
 numbers = count()
@@ -17,68 +19,94 @@ def SessionClass():
     engine.dispose()
 
 
-class TestDatabase(object):
-    @pytest.fixture()
-    def session(self, SessionClass) -> Session:
-        session = SessionClass()
-        yield session
+@pytest.fixture(scope='function')
+def session(SessionClass: sessionmaker):
+    s: Session = SessionClass()
+    try:
+        yield s
+    finally:
+        s.close()
+
+
+def test_submission_increment(session: Session):
+    sub = Submission(id=1, user=1)
+    session.bulk_save_objects([sub])
     session.commit()
-        session.close()
+
+    with pytest.raises(exceptions.SelfVoteException):
+        sub.increment(1)
+    sub.increment(2)
+    assert sub.votes == [2]
+    with pytest.raises(exceptions.DatabaseDoubleVoteException):
+        sub.increment(2)
+
+
+def test_submission_decrement(session: Session) -> None:
+    sub = Submission(id=1, user=1)
+    session.add(sub)
+    session.commit()
+
+    sub.votes = [1]
+    sub.decrement(1)
+    assert sub.votes == []
+    with pytest.raises(exceptions.DatabaseNoVoteException):
+        sub.decrement(1)
+
+
+def test_advance_state(session: Session) -> None:
+    guild = Guild(id=1)
+    per = Period(id=1, guild=guild)
+    session.add(per)
+    session.commit()
+
+    assert per.state == PeriodStates.READY
+    per.advance_state()
+    assert per.state == PeriodStates.SUBMISSIONS
+    per.advance_state()
+    assert per.state == PeriodStates.PAUSED
+    per.advance_state()
+    assert per.state == PeriodStates.VOTING
+    per.advance_state()
+    assert per.state == PeriodStates.FINISHED
+
 
 @pytest.fixture()
-    def guild(self, session) -> Guild:
+def database(SessionClass: sessionmaker):
+    session: Session = SessionClass()
+
+    def users(user_ids) -> Generator[int, None, None]:
+        index = 0
+        random.shuffle(user_ids)
+        while True:
+            if index >= len(user_ids):
+                random.shuffle(user_ids)
+                index = 0
+            yield user_ids[index]
+            index += 1
+
+    user_ids = [next(numbers) for _ in range(50)]
     guild = Guild(id=next(numbers), submission_channel=next(numbers))
-        session.add(guild)
-        session.commit()
-        yield guild
-        session.delete(guild)
-        session.close()
+    users = users(user_ids)
 
-    @pytest.fixture()
-    def period(self, session: Session, guild: Guild):
+    for _ in range(3):
+        for state in PeriodStates:
             period = Period(id=next(numbers), guild=guild)
+            while period.active and period.state != state:
+                period.advance_state()
+
+            for _ in range(50):
+                s = Submission(id=next(numbers), user=next(users), period=period)
+                session.add(s)
+
             session.add(period)
+    session.add(guild)
+
     session.commit()
-        yield period
-        session.delete(period)
-        session.close()
-
-    @pytest.fixture()
-    def submission(self, session: Session, period: Period) -> Submission:
-        submission = Submission(id=next(numbers), user=next(numbers), timestamp=datetime.datetime.utcnow(), period=period)
-        session.add(submission)
-        session.commit()
-        yield submission
-        session.delete(submission)
-        session.close()
-
-
-@pytest.mark.usefixtures("session", "guild", "submission", "period")
-class TestSubmissions(TestDatabase):
-    def test_submission_base(self, session) -> None:
-        period = Period(id=next(numbers))
-        session.add(period)
-        submission = Submission(id=next(numbers), user=next(numbers), timestamp=datetime.datetime.utcnow(), period=period)
-        session.add(submission)
-
-
-@pytest.mark.usefixtures("session", "guild", "submission", "period")
-class TestGuilds(TestDatabase):
-    def test_guild_base(self, session: Session, guild: Guild) -> None:
-        for guild in session.query(Guild).all():
-            print(guild)
-        pass
-
-
-@pytest.mark.usefixtures("session", "guild", "submission", "period")
-class TestPeriods(TestDatabase):
-    @pytest.fixture()
-    def session(self, SessionClass) -> Session:
-        session = SessionClass()
     yield session
-        session.commit()
     session.close()
 
-    def test_period_base(self, session: SessionClass, period: Period) -> None:
-        session.commit()
-        pass
+
+def test_database(database: Session) -> None:
+    database.query(Guild).all()
+    print(database.query(Period).all())
+    print(database.query(Submission).all())