import subprocess
import sys

import pytest

import virtualenv

VIRTUALENV_SCRIPT = virtualenv.__file__


def test_commandline_basic(tmpdir):
    """Simple command line usage should work"""
    subprocess.check_call([sys.executable, VIRTUALENV_SCRIPT, str(tmpdir.join("venv"))])


def test_commandline_explicit_interp(tmpdir):
    """Specifying the Python interpreter should work"""
    subprocess.check_call([sys.executable, VIRTUALENV_SCRIPT, "-p", sys.executable, str(tmpdir.join("venv"))])


# The registry lookups to support the abbreviated "-p 3.5" form of specifying
# a Python interpreter on Windows don't seem to work with Python 3.5. The
# registry layout is not well documented, and it's not clear that the feature
# is sufficiently widely used to be worth fixing.
# See https://github.com/pypa/virtualenv/issues/864
@pytest.mark.skipif("sys.platform == 'win32' and sys.version_info[:1] >= (3,)")
def test_commandline_abbrev_interp(tmpdir):
    """Specifying abbreviated forms of the Python interpreter should work"""
    if sys.platform == "win32":
        fmt = "%s.%s"
    else:
        fmt = "python%s.%s"
    abbrev = fmt % (sys.version_info[0], sys.version_info[1])
    subprocess.check_call([sys.executable, VIRTUALENV_SCRIPT, "-p", abbrev, str(tmpdir.join("venv"))])