| Class | TestCommandHelp | Tests for help on commands. |
| Class | ZzzTranslationsForDoc | Undocumented |
| Class | TestCommandHelpI18n | Tests for help on translated commands. |
| Class | TestHelp | Undocumented |
| Class | TestRegisteredTopic | Tests for the RegisteredTopic class. |
| Class | TestTopicIndex | Tests for the HelpTopicIndex class. |
| Class | TestConfigOptionIndex | Tests for the HelpCommandIndex class. |
| Class | TestCommandIndex | Tests for the HelpCommandIndex class. |
| Class | TestHelpIndices | Tests for the HelpIndices class. |