code: def test_assignment(self):
      self.assertEqual(
          self.phi1.assignment(1.212, 2), self.pdf1(1.212, 2)
      )
      self.assertEqual(
          self.phi2.assignment(1, -2.231), self.pdf2(1, -2.231)
      )
      self.assertEqual(
          self.phi3.assignment(1.212, 2.213, -3),
          self.pdf3(1.212, 2.213, -3),
      )
  
imports: import unittest
  import numpy
  import numpy.testing
  from scipy.special import beta
  from scipy.stats import multivariate_normal
  from pgmpy.factors.continuous import ContinuousFactor
label_desc: Use image node_id 7 for calling the TestContinuousFactorMethods obj's underlying member method code with example usage: obj.test_assignment() without return types