Use py.test for running unittests

.gitignore

@@ -18,3 +18,5 @@ test/data/*.gpsdecode.json
 .eggs
 venv
 venv2
+.cache
+.coverage

.travis.yml

@@ -28,8 +28,8 @@ before_install:
   - pip install pip setuptools --upgrade
 
 install:
-  - CC=g++-4.8 python setup.py install
+  - CC=g++-4.8 pip install .\[test\] --upgrade
 
 script:
-  - python setup.py test
+  - py.test test ais --cov ais --cov-report term-missing
   - if [[ $TRAVIS_PYTHON_VERSION == '3.4' ]]; then (cd src && CC=gcc-4.8 CXX=g++-4.8 make -f Makefile-custom test); fi

setup.py

@@ -5,7 +5,8 @@
 
 from setuptools import setup, find_packages, Extension
 
-VERSION = open('VERSION').readline().strip()
+with open('VERSION') as f:
+    VERSION = f.readline().strip()
 
 EXTRA_COMPILE_ARGS = []
 if sys.platform in ('darwin', 'linux', 'linux2'):
@@ -65,7 +66,7 @@
           'six'
       ],
       extras_require={
-          'test': ['gpsd_format']
+          'test': ['pytest', 'pytest-cov']
       },
       classifiers=[
           'License :: OSI Approved :: Apache Software License',
@@ -93,5 +94,5 @@
               'libais_stats = ais.stats:main',
           ]
       },
-      test_suite = "test"
+      test_suite="test"
       )