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Document some minor subtleties in test_util.py #1749

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merged 3 commits into from
Nov 29, 2023
Merged

Document some minor subtleties in test_util.py #1749

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e309b35
Mock out lchmod functions in _patch_for_wrapping_test?
EliahKagan Nov 14, 2023
a09e538
Don't mock the lchmod functions, and explain why
EliahKagan Nov 29, 2023
2fabe71
Further document cygpath test parameter collections
EliahKagan Nov 29, 2023
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10 changes: 7 additions & 3 deletions test/test_util.py
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Original file line number Diff line number Diff line change
Expand Up @@ -140,7 +140,9 @@ def _patch_for_wrapping_test(self, mocker, hide_windows_known_errors):
# git.index.util "replaces" git.util and is what "import git.util" gives us.
mocker.patch.object(sys.modules["git.util"], "HIDE_WINDOWS_KNOWN_ERRORS", hide_windows_known_errors)

# Disable common chmod functions so the callback can't fix a PermissionError.
# Mock out common chmod functions to simulate PermissionError the callback can't
# fix. (We leave the corresponding lchmod functions alone. If they're used, it's
# more important we detect any failures from inadequate compatibility checks.)
mocker.patch.object(os, "chmod")
mocker.patch.object(pathlib.Path, "chmod")

Expand Down Expand Up @@ -256,14 +258,15 @@ def _xfail_param(*values, **xfail_kwargs):
(R"D:/Apps\fOO", "/cygdrive/d/Apps/fOO"),
(R"D:\Apps/123", "/cygdrive/d/Apps/123"),
)
"""Path test cases for cygpath and decygpath, other than extended UNC paths."""

_unc_cygpath_pairs = (
(R"\\?\a:\com", "/cygdrive/a/com"),
(R"\\?\a:/com", "/cygdrive/a/com"),
(R"\\?\UNC\server\D$\Apps", "//server/D$/Apps"),
)
"""Extended UNC path test cases for cygpath."""

# Mapping of expected failures for the test_cygpath_ok test.
_cygpath_ok_xfails = {
# From _norm_cygpath_pairs:
(R"C:\Users", "/cygdrive/c/Users"): "/proc/cygdrive/c/Users",
Expand All @@ -277,9 +280,9 @@ def _xfail_param(*values, **xfail_kwargs):
(R"\\?\a:\com", "/cygdrive/a/com"): "/proc/cygdrive/a/com",
(R"\\?\a:/com", "/cygdrive/a/com"): "/proc/cygdrive/a/com",
}
"""Mapping of expected failures for the test_cygpath_ok test."""


# Parameter sets for the test_cygpath_ok test.
_cygpath_ok_params = [
(
_xfail_param(*case, reason=f"Returns: {_cygpath_ok_xfails[case]!r}", raises=AssertionError)
Expand All @@ -288,6 +291,7 @@ def _xfail_param(*values, **xfail_kwargs):
)
for case in _norm_cygpath_pairs + _unc_cygpath_pairs
]
"""Parameter sets for the test_cygpath_ok test."""


@pytest.mark.skipif(sys.platform != "cygwin", reason="Paths specifically for Cygwin.")
Expand Down
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