code: def test_isclose(
      *,
      dtype_and_x,
      rtol,
      atol,
      equal_nan,
      test_flags,
      backend_fw,
      fn_name,
      on_device,
  ):
      input_dtype, x = dtype_and_x
      helpers.test_function(
          input_dtypes=input_dtype,
          test_flags=test_flags,
          on_device=on_device,
          backend_to_test=backend_fw,
          fn_name=fn_name,
          a=x[0],
          b=x[1],
          rtol=rtol,
          atol=atol,
          equal_nan=equal_nan,
      )
  
imports: from hypothesis import strategies
  import ivy
  import ivy_tests.test_ivy.helpers
  from ivy_tests.test_ivy.helpers import handle_test
label_desc: Use image node_id 23 for calling a global function with example usage: test_isclose() without return types