| Function | dir_reader_scenarios | Undocumented |
| Class | TestContainsWhitespace | Undocumented |
| Class | TestRename | Undocumented |
| Class | TestRandChars | Undocumented |
| Class | TestIsInside | Undocumented |
| Class | TestLstat | Undocumented |
| Class | TestRmTree | Undocumented |
| Class | TestDeleteAny | Undocumented |
| Class | TestKind | Undocumented |
| Class | TestUmask | Undocumented |
| Class | TestDateTime | No class docstring; 3/6 methods documented |
| Class | TestLinks | Undocumented |
| Class | TestCanonicalRelPath | Undocumented |
| Class | Test_CICPCanonicalRelpath | Undocumented |
| Class | TestPumpFile | Test pumpfile method. |
| Class | TestPumpStringFile | Undocumented |
| Class | TestRelpath | Undocumented |
| Class | TestSafeUnicode | Undocumented |
| Class | TestSafeUtf8 | Undocumented |
| Class | TestSafeRevisionId | No class docstring; 1/6 methods documented |
| Class | TestSafeFileId | No class docstring; 1/6 methods documented |
| Class | TestPosixFuncs | Test that the posix version of normpath returns an appropriate path |
| Class | TestWin32Funcs | Test that _win32 versions of os utilities return appropriate paths. |
| Class | TestWin32FuncsDirs | Test win32 functions that create files. |
| Class | TestParentDirectories | Test osutils.parent_directories() |
| Class | TestMacFuncsDirs | Test mac special functions that require directories. |
| Class | TestChunksToLines | Undocumented |
| Class | TestSplitLines | Undocumented |
| Class | TestWalkDirs | No class docstring; 9/24 methods documented |
| Class | TestCopyTree | Undocumented |
| Class | TestSetUnsetEnv | Test updating the environment |
| Class | TestSizeShaFile | Undocumented |
| Class | TestShaFileByName | Undocumented |
| Class | TestResourceLoading | Undocumented |
| Class | TestReCompile | Undocumented |
| Class | TestDirReader | No class docstring; 1/8 methods documented |
| Class | TestReadLink | Exposes os.readlink() problems and the osutils solution. |
| Class | TestConcurrency | Undocumented |
| Class | TestFailedToLoadExtension | Undocumented |
| Class | TestTerminalWidth | Undocumented |
| Class | TestCreationOps | No class docstring; 2/4 methods documented |
| Class | TestGetuserUnicode | Undocumented |
| Class | TestBackupNames | Undocumented |
| Class | TestFindExecutableInPath | Undocumented |
| Class | _UTF8DirReaderFeature | Undocumented |
| Function | _already_unicode | Undocumented |
| Function | _utf8_to_unicode | Undocumented |