nodemap: add a test about nodemap "vacuum" during stream clone When the nodemap "vacuum" it generate a new datafile, with a new unique name and delete the old one. This confuse the stream clone code and create the same kind of crash we were seeing in the previous patch. We build a test case where this happens. The next changeset will contains a fix We can also notice that we are, wrongfully exchanging `undo.*` files that the client will not be able to use. This will be dealt with soon. Differential Revision: https://phab.mercurial-scm.org/D10480

[build-system]
requires = ["setuptools", "wheel"]
build-backend = "setuptools.build_meta"

[tool.black]
line-length = 80
exclude = '''
build/
| wheelhouse/
| dist/
| packages/
| \.hg/
| \.mypy_cache/
| \.venv/
| mercurial/thirdparty/
'''
skip-string-normalization = true
quiet = true