code: def test_ANP_unify():
      mod_z = [ZZ(1), ZZ(0), ZZ(-2)]
      mod_q = [QQ(1), QQ(0), QQ(-2)]
  
      a = ANP([QQ(1)], mod_q, QQ)
      b = ANP([ZZ(1)], mod_z, ZZ)
  
      assert a.unify(b)[0] == QQ
      assert b.unify(a)[0] == QQ
      assert a.unify(a)[0] == QQ
      assert b.unify(b)[0] == ZZ
  
      assert a.unify_ANP(b)[-1] == QQ
      assert b.unify_ANP(a)[-1] == QQ
      assert a.unify_ANP(a)[-1] == QQ
      assert b.unify_ANP(b)[-1] == ZZ
  
imports: from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.polys.domains import ZZ, QQ
  from sympy.polys.polyclasses import DMP, DMF, ANP
  from sympy.polys.polyerrors import CoercionFailed, ExactQuotientFailed, NotInvertible
  from sympy.polys.specialpolys import f_polys
  from sympy.testing.pytest import raises, warns_deprecated_sympy
label_desc: Use image node_id 19 for calling a global function with example usage: test_ANP_unify() without return types