rust-dirstatemap: add unit tests
These were missing and have already proven valuable since they have found
two bugs (fixed in previous patches).
There may be other behavior to test, but this gives us a decent coverage.
Differential Revision: https://phab.mercurial-scm.org/D12524
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
end_of_line = lf
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true
end_of_line = lf
[*.t]
indent_size = 2
indent_style = space
trim_trailing_whitespace = false
end_of_line = lf