Merge pull request pyca#4 from pyca/tox

Add tox and travis-ci configuration to aid proper testing.

.travis.yml

@@ -0,0 +1,15 @@
+language: python
+
+os:
+  - linux
+  - osx
+
+python:
+  - "pypy"
+  - "2.6"
+  - "2.7"
+  - "3.2"
+  - "3.3"
+
+script:
+  - python setup.py test

OpenSSL/crypto.py

@@ -1926,10 +1926,10 @@ def raise_if_problem(self, exceptionType=Error):
         try:
             _exception_from_error_queue(exceptionType)
         except exceptionType as e:
-            pass
+            from_queue = e
         if self._problems:
             raise self._problems[0]
-        return e
+        return from_queue
 
 
     def _read_passphrase(self, buf, size, rwflag, userdata):

memdbg.py

@@ -31,7 +31,7 @@
 
 def log(s):
     if verbose:
-        print s
+        print(s)
 
 def _backtrace():
     buf = _ffi.new("void*[]", 64)
@@ -75,8 +75,8 @@ def free(p):
 
 
 if _api.CRYPTO_set_mem_functions(malloc, realloc, free):
-    print 'Enabled memory debugging'
+    log('Enabled memory debugging')
     heap = {}
 else:
-    print 'Failed to enable memory debugging'
+    log('Failed to enable memory debugging')
     heap = None

setup.py

@@ -8,7 +8,7 @@
 Installation script for the OpenSSL module
 """
 
-from distutils.core import setup
+from setuptools import setup
 
 # XXX Deduplicate this
 __version__ = '0.13'
@@ -34,6 +34,7 @@
       maintainer_email = 'exarkun@twistedmatrix.com',
       url = 'https://github.com/pyca/pyopenssl',
       license = 'APL2',
+      install_requires=["cryptography>=0.1"],
       long_description = """\
 High-level wrapper around a subset of the OpenSSL library, includes
  * SSL.Connection objects, wrapping the methods of Python's portable
@@ -58,4 +59,5 @@
         'Topic :: Security :: Cryptography',
         'Topic :: Software Development :: Libraries :: Python Modules',
         'Topic :: System :: Networking',
-        ])
+        ],
+      test_suite="OpenSSL.test")

tox.ini

@@ -0,0 +1,10 @@
+[tox]
+envlist = pypy,py26,py27,py32,py33
+
+[testenv]
+setenv =
+    # Do not allowed the executing environment to pollute the test environment
+    # with extra packages.
+    PYTHONPATH=
+# The standard library unittest module can run tests on Python 2.7 and newer
+commands = python setup.py test