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import os
import pytest
from shellingham import posix
from shellingham.posix._core import Process
class EnvironManager(object):
def __init__(self):
self.backup = {}
self.changed = set()
def patch(self, **kwargs):
self.backup.update({
k: os.environ[k] for k in kwargs if k in os.environ
})
self.changed.update(kwargs.keys())
os.environ.update(kwargs)
def unpatch(self):
for k in self.changed:
try:
v = self.backup[k]
except KeyError:
os.environ.pop(k, None)
else:
os.environ[k] = v
@pytest.fixture()
def environ(request):
"""Provide environment variable override, and restore on finalize.
"""
manager = EnvironManager()
request.addfinalizer(manager.unpatch)
return manager
MAPPING_EXAMPLE_KEEGANCSMITH = [
Process(
args=(
"/Applications/iTerm.app/Contents/MacOS/iTerm2",
"--server",
"login",
"-fp",
"keegan",
),
pid="1480",
ppid="1477",
),
Process(args=("-bash",), pid="1482", ppid="1481"),
Process(args=("screen",), pid="1556", ppid="1482"),
Process(args=("-/usr/local/bin/bash",), pid="1558", ppid="1557"),
Process(
args=(
"/Applications/Emacs.app/Contents/MacOS/Emacs-x86_64-10_10",
"-nw",
),
pid="1706",
ppid="1558",
),
Process(
args=("/usr/local/bin/aspell", "-a", "-m", "-B", "--encoding=utf-8"),
pid="77061",
ppid="1706",
),
Process(args=("-/usr/local/bin/bash",), pid="1562", ppid="1557"),
Process(args=("-/usr/local/bin/bash",), pid="87033", ppid="1557"),
Process(args=("-/usr/local/bin/bash",), pid="84732", ppid="1557"),
Process(args=("-/usr/local/bin/bash",), pid="89065", ppid="1557"),
Process(args=("-/usr/local/bin/bash",), pid="80216", ppid="1557"),
]
@pytest.mark.parametrize('mapping, result', [
( # Based on pypa/pipenv#2496, provided by @keegancsmith.
MAPPING_EXAMPLE_KEEGANCSMITH, ('bash', '==MOCKED=LOGIN=SHELL==/bash'),
),
])
def test_get_shell(mocker, environ, mapping, result):
environ.patch(SHELL="==MOCKED=LOGIN=SHELL==/bash")
mocker.patch.object(posix, "_iter_process_parents", return_value=mapping)
assert posix.get_shell(pid=77061) == result
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