code: def test_contraction_structure_simple_Pow():
      x = IndexedBase("x")
      y = IndexedBase("y")
      i, j, k = Idx("i"), Idx("j"), Idx("k")
      ii_jj = x[i, i] ** y[j, j]
      assert get_contraction_structure(ii_jj) == {
          None: {ii_jj},
          ii_jj: [{(i,): {x[i, i]}}, {(j,): {y[j, j]}}],
      }
  
      ii_jk = x[i, i] ** y[j, k]
      assert get_contraction_structure(ii_jk) == {
          None: {x[i, i] ** y[j, k]},
          x[i, i] ** y[j, k]: [{(i,): {x[i, i]}}],
      }
  
imports: from sympy.core import symbols, S, Pow, Function
  from sympy.functions import exp
  from sympy.testing.pytest import raises
  from sympy.tensor.indexed import Idx, IndexedBase
  from sympy.tensor.index_methods import IndexConformanceException
  from sympy.tensor.index_methods import get_contraction_structure, get_indices
label_desc: Use image node_id 11 for calling a global function with example usage: test_contraction_structure_simple_Pow() without return types