Remove deprecated distutils.util.strtobool

Fix #273

simple_settings/special_settings.py

@@ -2,9 +2,9 @@
 import logging.config
 import os
 from collections import OrderedDict
-from distutils.util import strtobool
 
 from .constants import SPECIAL_SETTINGS_KEY
+from .strtobool import strtobool
 
 
 def required_settings(settings_dict):

simple_settings/strtobool.py

@@ -0,0 +1,21 @@
+_MAP = {
+    'y': True,
+    'yes': True,
+    't': True,
+    'true': True,
+    'on': True,
+    '1': True,
+    'n': False,
+    'no': False,
+    'f': False,
+    'false': False,
+    'off': False,
+    '0': False
+}
+
+
+def strtobool(value):
+    try:
+        return _MAP[str(value).lower()]
+    except KeyError:
+        raise ValueError('"{}" is not a valid bool value'.format(value))

tests/test_strtobool.py

@@ -0,0 +1,22 @@
+import pytest
+
+from simple_settings.strtobool import strtobool
+
+
+class TestStrToBool:
+
+    @pytest.mark.parametrize('value', (
+        'y', 'Y', 'yes', 't', 'True', 'ON', 1,
+    ))
+    def test_should_return_true(self, value):
+        assert strtobool(value) is True
+
+    @pytest.mark.parametrize('value', (
+        'n', 'N', 'no', 'f', 'False', 'OFF', 0,
+    ))
+    def test_should_return_false(self, value):
+        assert strtobool(value) is False
+
+    def test_should_raise_value_error(self):
+        with pytest.raises(ValueError):
+            strtobool('VERDADEIRO')