Update of .gitignore and added test_bite.py

Author: ushills

.gitignore

@@ -105,3 +105,7 @@ ENV/
 days/91-93-sqlalchemy/demo/persistent_rps/db/rock_paper_scissors.sqlite
 days/91-93-sqlalchemy/demo/persistent_rps_starter/.vscode/settings.json
 rock_paper_scissors.sqlite
+
+# Pytest
+.pytest_cache
+

days/01-03-datetimes/code/bite7.py

@@ -42,6 +42,6 @@ def time_between_shutdowns(loglines):
        Return this datetime.timedelta object.'''
     pass
 
-
-tbs = time_between_shutdowns(loglines)
-print('Time between shutdowns = ' + str(tbs))
+if __name__ == '__main__':
+    tbs = time_between_shutdowns(loglines)
+    print('Time between shutdowns = ' + str(tbs))

days/01-03-datetimes/code/test_bite7.py

@@ -0,0 +1,18 @@
+from datetime import datetime, timedelta
+
+from bite7 import loglines, convert_to_datetime, time_between_shutdowns
+
+
+def test_convert_to_datetime():
+    line1 = 'ERROR 2014-07-03T23:24:31 supybot Invalid user dictionary file'
+    line2 = 'INFO 2015-10-03T10:12:51 supybot Shutdown initiated.'
+    line3 = 'INFO 2016-09-03T02:11:22 supybot Shutdown complete.'
+    assert convert_to_datetime(line1) == datetime(2014, 7, 3, 23, 24, 31)
+    assert convert_to_datetime(line2) == datetime(2015, 10, 3, 10, 12, 51)
+    assert convert_to_datetime(line3) == datetime(2016, 9, 3, 2, 11, 22)
+
+
+def test_time_between_events():
+    diff = time_between_shutdowns(loglines)
+    assert type(diff) == timedelta
+    assert str(diff) == '0:03:31'