Adding slow attribute to LDPC decoder testing.

Author: veeresht

.travis.yml

@@ -13,8 +13,7 @@ install:
     - pip install coveralls
     - python setup.py install
 script:
-    - nosetests
-    - nosetests  --with-coverage --cover-package=commpy
+    - nosetests -a '!slow' --with-coverage --cover-package=commpy
 after_success:
     - coveralls
 

commpy/channelcoding/tests/test_ldpc.py

@@ -6,9 +6,11 @@
 from numpy.testing import assert_allclose
 from commpy.channelcoding.ldpc import get_ldpc_code_params, ldpc_bp_decode
 from commpy.utilities import hamming_dist
-
 import os
 
+from nose.plugins.attrib import attr
+
+@attr('slow')
 class TestLDPCCode(object):
 
     @classmethod