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GitPython/test/deprecation/test_compat.py at main · gitpython-developers/GitPython · GitHub
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deprecation
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test_compat.py
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deprecation
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test_compat.py
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# This module is part of GitPython and is released under the
# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
"""Tests for dynamic and static characteristics of git.compat module attributes.
These tests verify that the is_<platform> attributes are available, and are even listed
in the output of dir(), but issue warnings, and that bogus (misspelled or unrecognized)
attribute access is still an error both at runtime and with mypy. This is similar to
some of the tests in test_toplevel, but the situation being tested here is simpler
because it does not involve unintuitive module aliasing or import behavior. So this only
tests attribute access, not "from" imports (whose behavior can be intuitively inferred).
"""
import
os
import
sys
if
sys
.
version_info
>=
(
3
,
11
):
from
typing
import
assert_type
else
:
from
typing_extensions
import
assert_type
import
pytest
import
git
.
compat
_MESSAGE_LEADER
=
"{} and other is_<platform> aliases are deprecated."
"""Form taken by the beginning of the warnings issued for is_<platform> access."""
def
test_cannot_access_undefined
()
->
None
:
"""Accessing a bogus attribute in git.compat remains a dynamic and static error."""
with
pytest
.
raises
(
AttributeError
):
git
.
compat
.
foo
# type: ignore[attr-defined]
def
test_is_platform
()
->
None
:
"""The is_<platform> attributes work, warn, and mypy accepts code accessing them."""
fully_qualified_names
=
[
"git.compat.is_win"
,
"git.compat.is_posix"
,
"git.compat.is_darwin"
,
]
with
pytest
.
deprecated_call
()
as
ctx
:
is_win
=
git
.
compat
.
is_win
is_posix
=
git
.
compat
.
is_posix
is_darwin
=
git
.
compat
.
is_darwin
assert_type
(
is_win
,
bool
)
assert_type
(
is_posix
,
bool
)
assert_type
(
is_darwin
,
bool
)
messages
=
[
str
(
entry
.
message
)
for
entry
in
ctx
]
assert
len
(
messages
)
==
3
for
fullname
,
message
in
zip
(
fully_qualified_names
,
messages
):
assert
message
.
startswith
(
_MESSAGE_LEADER
.
format
(
fullname
))
# These assertions exactly reproduce the expressions in the code under test, so they
# are not good for testing that the values are correct. Instead, their purpose is to
# ensure that any dynamic machinery put in place in git.compat to cause warnings to
# be issued does not get in the way of the intended values being accessed.
assert
is_win
==
(
os
.
name
==
"nt"
)
assert
is_posix
==
(
os
.
name
==
"posix"
)
assert
is_darwin
==
(
sys
.
platform
==
"darwin"
)
def
test_dir
()
->
None
:
"""dir() on git.compat includes all public attributes, even if deprecated.
As dir() usually does, it also has nonpublic attributes, which should also not be
removed by a custom __dir__ function, but those are less important to test.
"""
expected_subset
=
{
"is_win"
,
"is_posix"
,
"is_darwin"
,
"defenc"
,
"safe_decode"
,
"safe_encode"
,
"win_encode"
,
}
actual
=
set
(
dir
(
git
.
compat
))
assert
expected_subset
<=
actual
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