Skipping a python unittest with a custom decorator

Example custom Python unittest skip decorator:

import functools
import glob
import os

def skipIfNoYamlFiles(f):
  @functools.wraps(f)
  def wrapper(*args, **kwargs):
    yaml_glob = os.path.normpath(os.path.dirname(__file__) + "/../../definitions/*.yaml")
    if glob.glob(yaml_glob):
      return f(*args, **kwargs)
    else:
      return unittest.skip("No YAML found with %s, skipping this test." % yaml_glob)
  return wrapper

Use it like this:

class MyTests(unittest.TestCase):

  @test_lib.skipIfNoYamlFiles
  def testValidation(self):
    """Ensure all Yaml validates."""
    print "test code goes here"