code: def test_filename_match_prefix():
      name_expr = [("foo", [2 * x, 3 * y]), ("bar", [y**2, 4 * y])]
      (result,) = codegen(
          name_expr, "Rust", prefix="baz", header=False, empty=False
      )
      assert result[0] == "baz.rs"
  
imports: from io import StringIO
  from sympy.core import S, symbols, pi, Catalan, EulerGamma, Function
  from sympy.core.relational import Equality
  from sympy.functions.elementary.piecewise import Piecewise
  from sympy.utilities.codegen import RustCodeGen, codegen, make_routine
  from sympy.testing.pytest import XFAIL
  import sympy
label_desc: Use image node_id 17 for calling a global function with example usage: test_filename_match_prefix() without return types