Add tests

tests/test_discord_reminder_bot.py

@@ -1,5 +1,59 @@
+"""Test discord-reminder-bot.
+
+Jobs are stored in memory.
+"""
+import re
+
+import dateparser
+import pytz
+from apscheduler.jobstores.sqlalchemy import SQLAlchemyJobStore
+from apscheduler.schedulers.asyncio import AsyncIOScheduler
 from discord_reminder_bot import __version__
+from discord_reminder_bot.main import calc_countdown, send_to_discord
 
 
 def test_version():
+    """Check if version is 0.1.0."""
     assert __version__ == "0.1.0"
+
+
+class TestClass:
+    """This tests everything.
+
+    This sets up sqlite database in memory, changes scheduler timezone
+    to Europe/Stockholm and creates job that runs January 18 2040.
+    """
+
+    jobstores = {"default": SQLAlchemyJobStore(url="sqlite:///:memory")}
+    job_defaults = {"coalesce": True}
+    scheduler = AsyncIOScheduler(
+        jobstores=jobstores,
+        timezone=pytz.timezone("Europe/Stockholm"),
+        job_defaults=job_defaults,
+    )
+
+    parsed_date = dateparser.parse(
+        "18 January 2040",
+        settings={
+            "PREFER_DATES_FROM": "future",
+            "TO_TIMEZONE": "Europe/Stockholm",
+        },
+    )
+
+    run_date = parsed_date.strftime("%Y-%m-%d %H:%M:%S")  # type: ignore
+    job = scheduler.add_job(
+        send_to_discord,
+        run_date=run_date,
+        kwargs={
+            "channel_id": 865712621109772329,
+            "message": "Running PyTest",
+            "author_id": 126462229892694018,
+        },
+    )
+
+    def test_calc_countdown(self):
+        """Check if calc_countdown returns days, hours and minutes."""
+        # FIXME: This will break when there is 0 seconds/hours/days left
+        pattern = re.compile(r"\d* days, \d* hours, \d* minutes")
+        countdown = calc_countdown(self.job)
+        assert pattern.match(countdown)