Fix python2.6 support for tests

- "{}".format('foo') does not work on python2.6, as the index needs to be explicitly specified.
- assertIn(x, y) was only introduced in 2.7, reverting to assertTrue(x in y)

Updated test environments definitions and docs accordingly.

.travis.yml

@@ -1,5 +1,6 @@
 language: python
 python:
+  - "2.6"
   - "2.7"
   - "3.3"
   - "3.4"

CONTRIBUTING.rst

@@ -113,7 +113,7 @@ Before you submit a pull request, check that it meets these guidelines:
 2. If the pull request adds functionality, the docs should be updated. Put
    your new functionality into a function with a docstring, and add the
    feature to the list in README.rst.
-3. The pull request should work for Python 2.7 and 3.3+. Check
+3. The pull request should work for Python 2.6, 2.7 and 3.3+. Check
    `Travis`_ and make sure that
    the tests pass for all supported Python versions.
 

README.rst

@@ -33,7 +33,7 @@ Requirements
 ------------
 
 * Redis.
-* Python 2.7 or 3.3+.
+* Python 2.6, 2.7 or 3.3+.
 
 Installation
 ------------

setup.py

@@ -26,6 +26,7 @@ setup(
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.3',

tests.py

@@ -58,8 +58,8 @@ class SnapPassRoutesTestCase(TestCase):
     def test_show_password(self):
         password = "I like novelty kitten statues!"
         key = snappass.set_password(password, 30)
-        rv = self.app.get('/{}'.format(key))
+        rv = self.app.get('/{0}'.format(key))
-        self.assertIn(password, rv.get_data(as_text=True))
+        self.assertTrue(password in rv.get_data(as_text=True))
 
 
 if __name__ == '__main__':

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py27, py33, py34, py35
+envlist = py26, py27, py33, py34, py35
 
 [testenv]
 deps =