# Copyright (C) The Arvados Authors. All rights reserved.
#
# SPDX-License-Identifier: Apache-2.0

import re

import pytest

from arvados import _internal

class TestDeprecated:
    @staticmethod
    @_internal.deprecated('TestVersion', 'arvados.noop')
    def noop_func():
        """Do nothing

        This function returns None.
        """

    @pytest.mark.parametrize('pattern', [
        r'^Do nothing$',
        r'^ *.. WARNING:: Deprecated$',
        r' removed in Arvados TestVersion\.',
        r' Prefer arvados\.noop\b',
        r'^ *This function returns None\.$',
    ])
    def test_docstring(self, pattern):
        assert re.search(pattern, self.noop_func.__doc__, re.MULTILINE) is not None

    def test_deprecation_warning(self):
        with pytest.warns(DeprecationWarning) as check:
            self.noop_func()
        actual = str(check[0].message)
        assert ' removed in Arvados TestVersion.' in actual
        assert ' Prefer arvados.noop ' in actual


class TestParseSeq:
    @pytest.mark.parametrize('s', [
        'foo,bar',
        'foo, bar',
        'foo , bar',
    ])
    def test_default_split(self, s):
        assert list(_internal.parse_seq(s)) == ['foo', 'bar']

    @pytest.mark.parametrize('s', [
        'foo',
        ',foo',
        'foo ,',
        ' foo ',
        ',foo,',
        ', foo ,',
    ])
    def test_empty_filtering(self, s):
        assert list(_internal.parse_seq(s)) == ['foo']

    @pytest.mark.parametrize('s', [
        '',
        ' ',
        ',',
        ' , ',
    ])
    def test_empty_list(self, s):
        assert list(_internal.parse_seq(s)) == []


class TestUniq:
    @pytest.mark.parametrize('arg', [
        'abcde',
        'aabbccddee',
        'abcdeabcde',
        'ababcbabcdcbabcdedcbae',
    ])
    def test_uniq(self, arg):
        assert list(_internal.uniq(iter(arg))) == list('abcde')