# -*- coding: utf-8 -*-
"""\
Test the Unicode numbers module.
"""
from __future__ import unicode_literals

import unicodedata

from natsort.compat.py23 import py23_range, py23_unichr
from natsort.unicode_numbers import (
    decimal_chars,
    decimals,
    digit_chars,
    digits,
    digits_no_decimals,
    numeric,
    numeric_chars,
    numeric_hex,
    numeric_no_decimals,
)


def test_numeric_chars_contains_only_valid_unicode_numeric_characters():
    for a in numeric_chars:
        assert unicodedata.numeric(a, None) is not None


def test_digit_chars_contains_only_valid_unicode_digit_characters():
    for a in digit_chars:
        assert unicodedata.digit(a, None) is not None


def test_decimal_chars_contains_only_valid_unicode_decimal_characters():
    for a in decimal_chars:
        assert unicodedata.decimal(a, None) is not None


def test_numeric_chars_contains_all_valid_unicode_numeric_and_digit_characters():
    set_numeric_hex = set(numeric_hex)
    set_numeric_chars = set(numeric_chars)
    set_digit_chars = set(digit_chars)
    set_decimal_chars = set(decimal_chars)
    for i in py23_range(0X110000):
        try:
            a = py23_unichr(i)
        except ValueError:
            break
        if a in "0123456789":
            continue
        if unicodedata.numeric(a, None) is not None:
            assert i in set_numeric_hex
            assert a in set_numeric_chars
        if unicodedata.digit(a, None) is not None:
            assert i in set_numeric_hex
            assert a in set_digit_chars
        if unicodedata.decimal(a, None) is not None:
            assert i in set_numeric_hex
            assert a in set_decimal_chars

    assert set_decimal_chars.isdisjoint(digits_no_decimals)
    assert set_digit_chars.issuperset(digits_no_decimals)

    assert set_decimal_chars.isdisjoint(numeric_no_decimals)
    assert set_numeric_chars.issuperset(numeric_no_decimals)


def test_combined_string_contains_all_characters_in_list():
    assert numeric == "".join(numeric_chars)
    assert digits == "".join(digit_chars)
    assert decimals == "".join(decimal_chars)