# -*- coding: utf-8 -*-
# Copyright: (c) 2020 Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

from __future__ import annotations

import pytest

from ansible.utils.vars import isidentifier


# Originally posted at: http://stackoverflow.com/a/29586366


@pytest.mark.parametrize(
    "identifier", [
        "foo", "foo1_23",
    ]
)
def test_valid_identifier(identifier):
    assert isidentifier(identifier)


@pytest.mark.parametrize(
    "identifier", [
        "pass", "foo ", " foo", "1234", "1234abc", "", "   ", "foo bar", "no-dashed-names-for-you",
    ]
)
def test_invalid_identifier(identifier):
    assert not isidentifier(identifier)


def test_keywords_not_in_PY2():
    """In Python 2 ("True", "False", "None") are not keywords. The isidentifier
    method ensures that those are treated as keywords on both Python 2 and 3.
    """
    assert not isidentifier("True")
    assert not isidentifier("False")
    assert not isidentifier("None")


def test_non_ascii():
    """In Python 3 non-ascii characters are allowed as opposed to Python 2. The
    isidentifier method ensures that those are treated as keywords on both
    Python 2 and 3.
    """
    assert not isidentifier("křížek")
