code: def test_init_exceptions(self):
      self.assertRaises(
          ValueError, IndependenceAssertion, event2=["U"], event3="V"
      )
      self.assertRaises(ValueError, IndependenceAssertion, event2=["U"])
      self.assertRaises(ValueError, IndependenceAssertion, event3=["Z"])
      self.assertRaises(ValueError, IndependenceAssertion, event1=["U"])
      self.assertRaises(
          ValueError, IndependenceAssertion, event1=["U"], event3=["Z"]
      )
  
imports: import unittest
  from pgmpy.independencies import Independencies, IndependenceAssertion
label_desc: Use image node_id 5 for calling the TestIndependenceAssertion obj's underlying member method code with example usage: obj.test_init_exceptions() without return types