$ python3 -m unittest -v
test_empty (test_studylog.StudyLogTests.test_empty) ... ok
test_invalid_minutes (test_studylog.StudyLogTests.test_invalid_minutes) ... ok
test_invalid_records (test_studylog.StudyLogTests.test_invalid_records) ... ok
test_normalize_immutable (test_studylog.StudyLogTests.test_normalize_immutable) ... ok
test_summary (test_studylog.StudyLogTests.test_summary) ... ok
test_summary_immutable (test_studylog.StudyLogTests.test_summary_immutable) ... ok
test_summary_invalid (test_studylog.StudyLogTests.test_summary_invalid) ... ok
test_trim (test_studylog.StudyLogTests.test_trim) ... ok
test_zero (test_studylog.StudyLogTests.test_zero) ... ok

----------------------------------------------------------------------
Ran 9 tests in 0.000s

OK

Exit code: 0
