| Class | TestAutoDecorate | Tests for AutoDecorate. |
| Class | TestBase | Undocumented |
| Class | TestIterateSplit | Tests for iter_split. |
| Class | TestIterChunks | Tests for iter_chunks. |
| Class | TestCachingIterator | Tests for CachingIterator. |
| Class | TestDecorateWith | Tests for decorate_with. |
| Class | TestDocstringDedent | Tests for docstring_dedent. |
| Class | TestTracebackInfo | Tests of traceback_info. |
| Class | TestRunCapturingOutput | Test run_capturing_output. |
| Class | TestFileExists | Tests for file_exists. |
| Class | TestUTCNow | Tests for utc_now. |
| Class | TestSecondsSinceEpoch | Tests for seconds_since_epoch. |
| Class | TestBZ2Pickle | Tests for save_bz2_pickle and load_bz2_pickle. |
| Class | TestObfuscateStructure | No class docstring; 6/6 methods documented |
| Class | TestSanitiseURLs | Undocumented |