text: #!/usr/bin/env python
  """Unit test for check definitions."""
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import unicode_literals
  
  import glob
  import os
  
  
  from grr_response_core import config
  from grr_response_core.lib import flags
  from grr_response_server.check_lib import checks_test_lib
  from grr.test_lib import test_lib
  
  
  class ValidFormatTest(checks_test_lib.HostCheckTest):
  
    def testParseChecks(self):
      """Tests if checks verify, collates errors to diagnose invalid checks."""
      # Find the configs.
      check_configs = []
      for path in config.CONFIG["Checks.config_dir"]:
        check_configs.extend(glob.glob(os.path.join(path, "*.yaml")))
      # Check each config file and collate errors.
      errors = ""
      for f in check_configs:
        try:
          self.assertValidCheckFile(f)
        except AssertionError as e:
          errors += "%s\n" % e
      self.assertFalse(errors, "Errors in check configurations:\n%s" % errors)
  
  
  def main(argv):
    test_lib.main(argv)
  
  
  if __name__ == "__main__":
    flags.StartMain(main)
  