def METHOD_NAME(self):
    f,s = mms.evaluate('a*div(k*grad(u))', 'x**3', scalars=['k', 'a'])
    n = mms.build_hit(f, 'force', a=42).render()
    self.assertIn('[force]', n)
    self.assertIn('type = ParsedFunction', n)
    self.assertIn("value = '6*x*a*k'", n)
    self.assertIn("vars = 'a k'", n)
    self.assertIn("vals = '42 1.0'", n)