| Class | InstrumentedReplacer | Track what actions are done |
| Class | InstrumentedImportReplacer | Undocumented |
| Class | TestClass | Just a simple test class instrumented for the test cases |
| Class | TestScopeReplacer | Test the ability of the replacer to put itself into the correct scope. |
| Class | ImportReplacerHelper | Test the ability to have a lazily imported module or object |
| Class | TestImportReplacerHelper | No class docstring; 1/1 methods documented |
| Class | TestImportReplacer | No class docstring; 6/6 methods documented |
| Class | TestConvertImportToMap | Directly test the conversion from import strings to maps |
| Class | TestFromToMap | Directly test the conversion of 'from foo import bar' syntax |
| Class | TestCanonicalize | Test that we can canonicalize import texts |
| Class | TestImportProcessor | Test that ImportProcessor can turn import texts into lazy imports |
| Class | TestLazyImportProcessor | No class docstring; 2/3 methods documented |
| Class | TestScopeReplacerReentrance | The ScopeReplacer should be reentrant. |