Function test_issues_892

tests/test_resolver.py:497–542

(pex_project_dir)

def test_issues_892(pex_project_dir):
    # type: (str) -> None
    python27 = ensure_python_interpreter(PY27)
    program = dedent(
        """\
        from __future__ import print_function

        import os
        import sys


        # This puts python3.10 stdlib on PYTHONPATH.
        os.environ['PYTHONPATH'] = os.pathsep.join(sys.path)

        sys.path.append({pex_project_dir!r})
        from pex import resolver
        from pex.interpreter import PythonInterpreter
        from pex.requirements import parse_requirement_string
        from pex.targets import Targets


        python27 = PythonInterpreter.from_binary({python27!r})
        result = resolver.resolve(
            targets=Targets(interpreters=(python27,)),
            requirements=[parse_requirement_string('packaging==19.2')],
        )
        print('Resolved: {{}}'.format(result))
        """
    ).format(pex_project_dir=pex_project_dir, python27=python27)

    python310 = ensure_python_interpreter(PY310)
    cmd, process = PythonInterpreter.from_binary(python310).open_process(
        args=["-c", program], stderr=subprocess.PIPE
    )
    _, stderr = process.communicate()
    assert process.returncode == 0, dedent(
        """
        Command {cmd} failed with {returncode}.

        STDERR
        ======
        {stderr}
        """.format(
            cmd=cmd, returncode=process.returncode, stderr=stderr.decode("utf8")
        )
    )


def test_download2():