Further optimise the Travis testing and improve running tests for a user

+ Convert setup.py test to run py.test instead of tox
  + Tox should now run setup.py test
  + TravisCI will create a job for each TOX_ENV and then execute
    tox to run the tests for that TOX_ENV

.travis.yml

@@ -1,15 +1,19 @@
 language: python
 
+env:
+  - TOX_ENV=py33
+  - TOX_ENV=py34
+
 before_install:
-  - "sudo add-apt-repository ppa:gns3/ppa -y"
-  - "sudo apt-get update -q"
+  - sudo add-apt-repository ppa:gns3/ppa -y
+  - sudo apt-get update -q
 
 install:
-  - "pip install -r requirements.txt --use-mirrors"
-  - "pip install tox"
-  - "sudo apt-get install vpcs dynamips"
+  - pip install tox
+  - sudo apt-get install vpcs dynamips
 
-script: "python setup.py test"
+script:
+  - tox -e $TOX_ENV
 
 branches:
   only:

setup.py

@@ -20,7 +20,7 @@ from setuptools import setup, find_packages
 from setuptools.command.test import test as TestCommand
 
 
-class Tox(TestCommand):
+class PyTest(TestCommand):
 
     def finalize_options(self):
         TestCommand.finalize_options(self)
@@ -29,8 +29,9 @@ class Tox(TestCommand):
 
     def run_tests(self):
         #import here, cause outside the eggs aren't loaded
-        import tox
-        errcode = tox.cmdline(self.test_args)
+        import pytest
+        #errcode = tox.cmdline(self.test_args)
+        errcode = pytest.main(self.test_args)
         sys.exit(errcode)
 
 setup(
@@ -38,8 +39,8 @@ setup(
     version=__import__("gns3server").__version__,
     url="http://github.com/GNS3/gns3-server",
     license="GNU General Public License v3 (GPLv3)",
-    tests_require=["tox"],
-    cmdclass={"test": Tox},
+    tests_require=["pytest"],
+    cmdclass={"test": PyTest},
     author="Jeremy Grossmann",
     author_email="package-maintainer@gns3.net",
     description="GNS3 server to asynchronously manage emulators",

tox.ini

@@ -2,6 +2,6 @@
 envlist = py33, py34
 
 [testenv]
-commands = py.test [] -s tests
+commands = python setup.py test
 deps = -rdev-requirements.txt