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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/

import ast

import functools

import os

import subprocess

from test.lib import TestBase, VirtualEnvironment, with_rw_directory

class TestInstallation(TestBase):

@with_rw_directory

def test_installation(self, rw_dir):

venv, run = self._set_up_venv(rw_dir)

for project in ("./smmap", "./gitdb", "."):

result = run([venv.pip, "install", project])

self._check_result(result, f"Can't install {project}")

result = run([venv.python, "-c", "import git"])

self._check_result(result, "Self-test failed")

result = run([venv.python, "-c", "import gitdb; import smmap"])

self._check_result(result, "Dependencies not installed")

# Even IF gitdb or any other dependency is supplied during development by

# inserting its location into PYTHONPATH or otherwise patched into sys.path,

# make sure it is not wrongly inserted as the *first* entry.

result = run([venv.python, "-c", "import sys; import git; print(sys.path)"])

syspath = result.stdout.splitlines()[0]

syspath = ast.literal_eval(syspath)

self.assertEqual(

"",

syspath[0],

msg="Failed to follow the conventions for https://docs.python.org/3/library/sys.html#sys.path",

)

@staticmethod

def _set_up_venv(rw_dir):

# Initialize the virtual environment.

venv = VirtualEnvironment(rw_dir, with_pip=True)

# Make its src directory a symlink to our own top-level source tree.

os.symlink(

os.path.dirname(os.path.dirname(__file__)),

venv.sources,

target_is_directory=True,

)

# Create a convenience function to run commands in it.

run = functools.partial(

subprocess.run,

stdout=subprocess.PIPE,

stderr=subprocess.PIPE,

universal_newlines=True,

cwd=venv.sources,

env={**os.environ, "PYTHONWARNINGS": "error"},

)

return venv, run

def _check_result(self, result, failure_summary):

self.assertEqual(

result.returncode,

msg=self._prepare_failure_message(result, failure_summary),

)

@staticmethod

def _prepare_failure_message(result, failure_summary):

stdout = result.stdout.rstrip()

stderr = result.stderr.rstrip()

return f"{failure_summary}\n\nstdout:\n{stdout}\n\nstderr:\n{stderr}"

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