Fix and document tests

README.md

@@ -15,3 +15,12 @@ top-level structure:
 - pyretic.py:   A wrapper that starts up Pyretic
                 and optionally an OpenFlow client (see above)
 
+## Tests
+
+The full test suite for pyretic can be run with:
+
+`py.test pyretic/tests/tests.py`
+
+Alternatively, only the unit tests can be run with:
+
+`py.test pyretic/tests/unit_tests.py`

pyretic/tests/tests.py

@@ -1,2 +1,2 @@
-from unit_tests import *
-from mininet_tests import *
+from pyretic.tests.unit_tests import *
+from pyretic.tests.mininet_tests import *

pyretic/tests/unit_tests.py

@@ -1,2 +1,5 @@
-from test_language import *
-from test_packet   import *
+from pyretic.tests.test_language import *
+from pyretic.tests.test_packet   import *
+from pyretic.tests.test_re   import *
+from pyretic.tests.test_path   import *
+from pyretic.tests.test_specialization import *