Python3 does not have a 'long' type

circle.yml

@@ -7,7 +7,7 @@ machine:
 
 dependencies:
   override:
-    - pip install -r requirements/prod.txt -r requirements/dev.txt
+    - pip install -r requirements/dev.txt
     - pip install tox-pyenv codecov coveralls twine
     - pyenv local 2.7.10 3.5.0
 

objectrocket/util.py

@@ -1,6 +1,8 @@
 """Utility code for the objectrocket package."""
 import functools
 import datetime
+import six
+import sys
 
 from six import create_bound_method
 
@@ -68,7 +70,7 @@ def sum_values(value1, value2):
     if value2 is None:
         return value1
 
-    number_types = (int, float, long, bool) # noqa
+    number_types = (float, bool) + six.integer_types  # noqa
 
     if isinstance(value1, number_types) and isinstance(value2, number_types):
         return int(value1 + value2)
@@ -81,10 +83,10 @@ def sum_values(value1, value2):
 
     if isinstance(value1, list):
         return list(set(value1 + value2))
-    elif isinstance(value1, str) or isinstance(value1, datetime.datetime) or isinstance(value1, unicode): # noqa
+    elif isinstance(value1, str) or isinstance(value1, datetime.datetime) or isinstance(value1, six.text_type):  # noqa
         return value1
     elif isinstance(value1, dict):
-        keys = set(value1.iterkeys()) | set(value2.iterkeys())
+        keys = set(six.iterkeys(value1)) | set(six.iterkeys(value2))
         return dict((key, sum_values(value1.get(key), value2.get(key))) for key in keys)
     else:
         return value1 + value2

requirements/dev.txt

@@ -1,3 +1,4 @@
+-r prod.txt
 Sphinx>=1.2.2
 flake8>=2.1.0
 mock>=1.0.1

tests/test_utils.py

@@ -0,0 +1,28 @@
+import pytest
+from objectrocket import util
+
+
+@pytest.mark.parametrize("values,expected",
+                         [((None, 1), 1),
+                          ((1, None), 1),
+                          ((1, 1), 2)])
+def test_sum_values_integers(values, expected):
+    assert util.sum_values(*values) == expected
+
+
+def test_sum_values_fails_different_types():
+    with pytest.raises(TypeError) as ex:
+        util.sum_values(1, 'test')
+    assert 'are not of the same type' in str(ex)
+
+
+def test_sum_values_succeed_different_number_types():
+    assert util.sum_values(1, 2.3) == 3
+
+
+def test_sum_values_succeeds_list():
+    assert util.sum_values([2, 3], [1, 2]) == [1, 2, 3]
+
+
+def test_sum_values_succeeds_dict():
+    assert util.sum_values({"one": 1}, {"two": 2}) == {'one': 1, 'two': 2}

tox.ini

@@ -5,8 +5,7 @@ skipsdist = True
 
 [testenv]
 commands = {envbindir}/py.test {posargs} {toxinidir}/tests
-deps = -r{toxinidir}/requirements/prod.txt
-       -r{toxinidir}/requirements/dev.txt
+deps = -r{toxinidir}/requirements/dev.txt
 passenv = PYPI_USERNAME PYPI_PASSWORD
 recreate = False