code: def test_trivial_indices():
      x, y = symbols("x y")
      assert get_indices(x) == (set(), {})
      assert get_indices(x * y) == (set(), {})
      assert get_indices(x + y) == (set(), {})
      assert get_indices(x**y) == (set(), {})
  
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 1 for calling a global function with example usage: test_trivial_indices() without return types