Add py36 environment to CI and fix test

test_predeactivate_hook fails on py36 because tmpdir (py.local) now
implements the __path__ protocol so it the call to open inside
nodeenv.set_predeactivate_hook actually goes through but fails
with an FileNotFoundError

Author: nicoddemus

.travis.yml

@@ -5,6 +5,7 @@ env: # These should match the tox env list
     - TOXENV=py33
     - TOXENV=py34
     - TOXENV=py35
+    - TOXENV=py36
     - TOXENV=pypy
 install: pip install coveralls tox
 script: tox

setup.py

@@ -54,6 +54,7 @@ def read_file(file_name):
         'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Topic :: Software Development :: Libraries :: Python Modules'

tests/nodeenv_test.py

@@ -146,7 +146,7 @@ def test_print_node_versions_node(cap_logging_info):
 def test_predeactivate_hook(tmpdir):
     # Throw error if the environment directory is not a string
     with pytest.raises((TypeError, AttributeError)):
-        nodeenv.set_predeactivate_hook(tmpdir)
+        nodeenv.set_predeactivate_hook(1)
     # Throw error if environment directory has no bin path
     with pytest.raises((OSError, IOError)):
         nodeenv.set_predeactivate_hook(tmpdir.strpath)

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 # These should match the travis env list
-envlist = py27,py33,py34,py35,pypy
+envlist = py27,py33,py34,py35,py36,pypy
 
 [testenv]
 install_command = pip install --use-wheel {opts} {packages}