| Class | CheckRefFormatTests | Tests for the check_ref_format function. |
| Class | PackedRefsFileTests | Undocumented |
| Class | RefsContainerTests | Undocumented |
| Class | DictRefsContainerTests | Undocumented |
| Class | DiskRefsContainerTests | Undocumented |
| Class | InfoRefsContainerTests | Undocumented |
| Class | ParseSymrefValueTests | Undocumented |
| Class | StripPeeledRefsTests | Undocumented |