| Class | BaseTestPlugins | No class docstring; 2/6 methods documented |
| Class | TestLoadingPlugins | No class docstring; 2/6 methods documented |
| Class | TestPlugins | Undocumented |
| Class | TestPluginHelp | Undocumented |
| Class | TestHelpIndex | Tests for the PluginsHelpIndex class. |
| Class | FakeModule | A fake module to test with. |
| Class | TestModuleHelpTopic | Tests for the ModuleHelpTopic class. |
| Class | TestLoadFromPath | Undocumented |
| Class | TestEnvPluginPath | Undocumented |
| Class | TestDisablePlugin | Undocumented |
| Class | TestLoadPluginAtSyntax | Undocumented |
| Class | TestLoadPluginAt | Undocumented |
| Class | TestDescribePlugins | Undocumented |