code: def test_class_name():
      expr = ast.NumVal(1)
  
      expected_code = """
  namespace ML {
      public static class TestModel {
          public static double Score(double[] input) {
              return 1.0;
          }
      }
  }
  """
  
      interpreter = CSharpInterpreter(class_name="TestModel")
      assert_code_equal(interpreter.interpret(expr), expected_code)
  
imports: from itertools import product
  import pytest
  from m2cgen import ast
  from m2cgen.interpreters import CSharpInterpreter
  from tests.utils import assert_code_equal
label_desc: Use image node_id 7 for calling a global function with example usage: test_class_name() without return types