"""Tests for packaging.cygwinccompiler."""
import os
import sys
import sysconfig
from packaging.compiler.cygwinccompiler import (
    check_config_h, get_msvcr,
    CONFIG_H_OK, CONFIG_H_NOTOK, CONFIG_H_UNCERTAIN)

from packaging.tests import unittest, support


class CygwinCCompilerTestCase(support.TempdirManager,
                              unittest.TestCase):

    def setUp(self):
        super(CygwinCCompilerTestCase, self).setUp()
        self.version = sys.version
        self.python_h = os.path.join(self.mkdtemp(), 'python.h')
        self.old_get_config_h_filename = sysconfig.get_config_h_filename
        sysconfig.get_config_h_filename = self._get_config_h_filename

    def tearDown(self):
        sys.version = self.version
        sysconfig.get_config_h_filename = self.old_get_config_h_filename
        super(CygwinCCompilerTestCase, self).tearDown()

    def _get_config_h_filename(self):
        return self.python_h

    def test_check_config_h(self):
        # check_config_h looks for "GCC" in sys.version first
        # returns CONFIG_H_OK if found
        sys.version = ('2.6.1 (r261:67515, Dec  6 2008, 16:42:21) \n[GCC '
                       '4.0.1 (Apple Computer, Inc. build 5370)]')

        self.assertEqual(check_config_h()[0], CONFIG_H_OK)

        # then it tries to see if it can find "__GNUC__" in pyconfig.h
        sys.version = 'something without the *CC word'

        # if the file doesn't exist it returns  CONFIG_H_UNCERTAIN
        self.assertEqual(check_config_h()[0], CONFIG_H_UNCERTAIN)

        # if it exists but does not contain __GNUC__, it returns CONFIG_H_NOTOK
        self.write_file(self.python_h, 'xxx')
        self.assertEqual(check_config_h()[0], CONFIG_H_NOTOK)

        # and CONFIG_H_OK if __GNUC__ is found
        self.write_file(self.python_h, 'xxx __GNUC__ xxx')
        self.assertEqual(check_config_h()[0], CONFIG_H_OK)

    def test_get_msvcr(self):
        # none
        sys.version = ('2.6.1 (r261:67515, Dec  6 2008, 16:42:21) '
                       '\n[GCC 4.0.1 (Apple Computer, Inc. build 5370)]')
        self.assertEqual(get_msvcr(), None)

        # MSVC 7.0
        sys.version = ('2.5.1 (r251:54863, Apr 18 2007, 08:51:08) '
                       '[MSC v.1300 32 bits (Intel)]')
        self.assertEqual(get_msvcr(), ['msvcr70'])

        # MSVC 7.1
        sys.version = ('2.5.1 (r251:54863, Apr 18 2007, 08:51:08) '
                       '[MSC v.1310 32 bits (Intel)]')
        self.assertEqual(get_msvcr(), ['msvcr71'])

        # VS2005 / MSVC 8.0
        sys.version = ('2.5.1 (r251:54863, Apr 18 2007, 08:51:08) '
                       '[MSC v.1400 32 bits (Intel)]')
        self.assertEqual(get_msvcr(), ['msvcr80'])

        # VS2008 / MSVC 9.0
        sys.version = ('2.5.1 (r251:54863, Apr 18 2007, 08:51:08) '
                       '[MSC v.1500 32 bits (Intel)]')
        self.assertEqual(get_msvcr(), ['msvcr90'])

        # unknown
        sys.version = ('2.5.1 (r251:54863, Apr 18 2007, 08:51:08) '
                       '[MSC v.1999 32 bits (Intel)]')
        self.assertRaises(ValueError, get_msvcr)


def test_suite():
    return unittest.makeSuite(CygwinCCompilerTestCase)

if __name__ == '__main__':
    unittest.main(defaultTest='test_suite')