| Class | TestTreeDirectory | Undocumented |
| Class | TestTreeEntry | Undocumented |
| Class | TestTreeFile | Undocumented |
| Class | TestTreeLink | Undocumented |
| Class | TestDefaultFormat | Undocumented |
| Class | SampleTreeFormat | A sample format |
| Class | SampleExtraTreeFormat | A sample format that does not support use in a metadir. |
| Class | TestWorkingTreeFormat | Tests for the WorkingTreeFormat facility. |
| Class | TestWorkingTreeIterEntriesByDir_wSubtrees | Undocumented |
| Class | TestWorkingTreeFormatRegistry | Undocumented |
| Class | TestWorkingTreeFormat3 | Tests specific to WorkingTreeFormat3. |
| Class | InstrumentedTree | A instrumented tree to check the needs_tree_write_lock decorator. |
| Class | TestInstrumentedTree | No class docstring; 1/1 methods documented |
| Class | TestRevert | Undocumented |
| Class | TestAutoResolve | Undocumented |
| Class | TestFindTrees | Undocumented |