# Copyright (C) 2016 Intel Corporation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

import os
import pytest
import shlex
import sys
from subprocess import Popen, PIPE

def python3_cli():
    try:
        output = Popen("python3").communicate()[0]
        return output
    except:
        pytest.mark.xfail("Error: python3 not installed")
    finally:
        return False
 
def python34_module(modulename):
    cmd = shlex.split("python3 -m %s" % modulename) 
    try:
        Popen(cmd, stdout=PIPE).communicate()[0]
    except:
        pytest.fail("Error: python module %s not present" % modulename)


class TestPython3Installed:

    @pytest.fixture
    def python3_cli(self):
        try:
            output = Popen("python3").communicate()[0]
            return output
        except:
            pytest.mark.xfail("Error: python3 not installed")
        finally:
            return False

    def test_python3_installed(self, python3_cli):
        if not python3_cli:
            pytest.fail("Error: python3 not installed")
        else:
            pass


@pytest.mark.skipif(TestPython3Installed.python3_cli, reason="no python3 installed")
class TestNewPython34Modules:
    skip_python3 = python3_cli()

    def test_python34_asyncio(self):
         python34_module("asyncio")

    def test_python34_ensurepip(self):
        python34_module("ensurepip")

    def test_python34_enum(self):
        python34_module("enum")

    def test_python34_pathlib(self):
        python34_module("pathlib")

    def test_python34_selectors(self):
        python34_module("selectors")

    def test_python34_statistics(self):
        python34_module("statistics")

    def test_python34_tracemalloc(self):
        python34_module("tracemalloc")