Remove nat_cmp function

cmp is Python 2 only.

1 files changed, 0 insertions, 83 deletions

diff --git a/tests/test_natsort_cmp.py b/tests/test_natsort_cmp.py
deleted file mode 100644
index 41a252f..0000000
--- a/tests/test_natsort_cmp.py
+++ /dev/null
@@ -1,83 +0,0 @@
-# -*- coding: utf-8 -*-
-# pylint: disable=unused-variable
-"""These test the natcmp() function.
-
-Note that these tests are only relevant for Python version < 3.
-"""
-from functools import partial
-
-import pytest
-from hypothesis import given
-from hypothesis.strategies import floats, integers, lists
-from natsort import ns
-from natsort.compat.py23 import PY_VERSION, py23_cmp
-
-if PY_VERSION < 3:
-    from natsort import natcmp
-
-
-class Comparable(object):
-    """Stub class for testing natcmp functionality."""
-
-    def __init__(self, value):
-        self.value = value
-
-    def __cmp__(self, other):
-        return natcmp(self.value, other.value)
-
-
-@pytest.mark.skipif(PY_VERSION >= 3.0, reason="cmp() deprecated in Python 3")
-class TestNatCmp:
-
-    def test_classes_can_be_compared(self):
-        one = Comparable("1")
-        two = Comparable("2")
-        another_two = Comparable("2")
-        ten = Comparable("10")
-        assert ten > two == another_two > one
-
-    def test_keys_are_being_cached(self, mocker):
-        natcmp.cached_keys = {}
-        assert len(natcmp.cached_keys) == 0
-        natcmp(0, 0)
-        assert len(natcmp.cached_keys) == 1
-        natcmp(0, 0)
-        assert len(natcmp.cached_keys) == 1
-
-        with mocker.patch("natsort.compat.locale.dumb_sort", return_value=False):
-            natcmp(0, 0, alg=ns.L)
-            assert len(natcmp.cached_keys) == 2
-            natcmp(0, 0, alg=ns.L)
-            assert len(natcmp.cached_keys) == 2
-
-        with mocker.patch("natsort.compat.locale.dumb_sort", return_value=True):
-            natcmp(0, 0, alg=ns.L)
-            assert len(natcmp.cached_keys) == 3
-            natcmp(0, 0, alg=ns.L)
-            assert len(natcmp.cached_keys) == 3
-
-    def test_illegal_algorithm_raises_error(self):
-        with pytest.raises(ValueError):
-            natcmp(0, 0, alg="Just random stuff")
-
-    def test_classes_can_utilize_max_or_min(self):
-        comparables = [Comparable(i) for i in range(10)]
-
-        assert max(comparables) == comparables[-1]
-        assert min(comparables) == comparables[0]
-
-    @given(integers(), integers())
-    def test_natcmp_works_the_same_for_integers_as_cmp(self, x, y):
-        assert py23_cmp(x, y) == natcmp(x, y)
-
-    @given(floats(allow_nan=False), floats(allow_nan=False))
-    def test_natcmp_works_the_same_for_floats_as_cmp(self, x, y):
-        assert py23_cmp(x, y) == natcmp(x, y)
-
-    @given(lists(elements=integers()))
-    def test_sort_strings_with_numbers(self, a_list):
-        strings = [str(var) for var in a_list]
-        # noinspection PyArgumentList
-        natcmp_sorted = sorted(strings, cmp=partial(natcmp, alg=ns.SIGNED))
-
-        assert sorted(a_list) == [int(var) for var in natcmp_sorted]