# Copyright (c) 2016 Moises Lopez - https://www.vauxoo.com/ <moylop260@vauxoo.com>
# Copyright (c) 2016 Claudiu Popa <pcmanticore@gmail.com>

# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/master/COPYING

"""Tests for the pylint checker in :mod:`pylint.extensions.check_mccabe
"""

import os.path as osp

from pylint import checkers
from pylint.extensions.mccabe import register
from pylint.lint import PyLinter
from pylint.testutils import MinimalTestReporter


class TestMcCabeMethodChecker(object):
    """Test McCabe Method Checker"""

    expected_msgs = [
        "'f1' is too complex. The McCabe rating is 1",
        "'f2' is too complex. The McCabe rating is 1",
        "'f3' is too complex. The McCabe rating is 3",
        "'f4' is too complex. The McCabe rating is 2",
        "'f5' is too complex. The McCabe rating is 2",
        "'f6' is too complex. The McCabe rating is 2",
        "'f7' is too complex. The McCabe rating is 3",
        "'f8' is too complex. The McCabe rating is 4",
        "'f9' is too complex. The McCabe rating is 9",
        "'method1' is too complex. The McCabe rating is 1",
        "This 'for' is too complex. The McCabe rating is 4",
        "'method3' is too complex. The McCabe rating is 2",
        "'f10' is too complex. The McCabe rating is 11",
        "'method2' is too complex. The McCabe rating is 18",
    ]

    @classmethod
    def setup_class(cls):
        cls._linter = PyLinter()
        cls._linter.set_reporter(MinimalTestReporter())
        checkers.initialize(cls._linter)
        register(cls._linter)
        cls._linter.disable('all')
        cls._linter.enable('too-complex')

    def setup_method(self):
        self.fname_mccabe_example = osp.join(
            osp.dirname(osp.abspath(__file__)), 'data', 'mccabe.py')

    def test_too_complex_message(self):
        self._linter.global_set_option('max-complexity', 0)
        self._linter.check([self.fname_mccabe_example])
        real_msgs = [message.msg for message in self._linter.reporter.messages]
        assert sorted(self.expected_msgs) == sorted(real_msgs)

    def test_max_mccabe_rate(self):
        self._linter.global_set_option('max-complexity', 9)
        self._linter.check([self.fname_mccabe_example])
        real_msgs = [message.msg for message in self._linter.reporter.messages]
        assert sorted(self.expected_msgs[-2:]) == sorted(real_msgs)


if __name__ == '__main__':
    import sys
    import pytest
    pytest.main(sys.argv)