text: __author__ = "Stacy Smith"
  __credits__ = "Jeremy Schulman, Nitin Kumar"
  
  try:
      import unittest2 as unittest
  except ImportError:
      import unittest
  import pytest
  import importlib
  import sys
  
  import jnpr.junos.facts
  
  
  @pytest.mark.unit
  class TestFactInitialization(unittest.TestCase):
      def test_duplicate_facts(self):
          module = importlib.import_module("tests.unit.facts.dupe_foo1")
          sys.modules["jnpr.junos.facts.dupe_foo1"] = module
          module = importlib.import_module("tests.unit.facts.dupe_foo2")
          sys.modules["jnpr.junos.facts.dupe_foo2"] = module
          with self.assertRaises(RuntimeError):
              jnpr.junos.facts._build_fact_callbacks_and_doc_strings()
  