code: def test_ModuleHomomorphism_matrix():
      T = Poly(cyclotomic_poly(5, x))
      A = PowerBasis(T)
      phi = ModuleEndomorphism(A, lambda a: a**2)
      M = phi.matrix()
      assert M == DomainMatrix(
          [[1, 0, -1, 0], [0, 0, -1, 1], [0, 1, -1, 0], [0, 0, -1, 0]],
          (4, 4),
          ZZ,
      )
  
imports: from sympy.abc import x, zeta
  from sympy.polys import Poly, cyclotomic_poly
  from sympy.polys.domains import FF, QQ, ZZ
  from sympy.polys.matrices import DomainMatrix, DM
  from sympy.polys.numberfields.exceptions import ClosureFailure, MissingUnityError, StructureError
  from sympy.polys.numberfields.modules import Module, ModuleElement, ModuleEndomorphism, PowerBasis, PowerBasisElement, find_min_poly, is_sq_maxrank_HNF, make_mod_elt, to_col
  from sympy.polys.numberfields.utilities import is_int
  from sympy.polys.polyerrors import UnificationFailed
  from sympy.testing.pytest import raises
label_desc: Use image node_id 51 for calling a global function with example usage: test_ModuleHomomorphism_matrix() without return types