def METHOD_NAME():
    '''Test that an instance of ScalarArgMetadata can be created
    successfully.
    '''
    field_arg = ScalarArgMetadata("GH_REAL", "GH_READ")
    assert isinstance(field_arg, ScalarArgMetadata)
    assert field_arg.form == "gh_scalar"
    assert field_arg._datatype == "gh_real"
    assert field_arg._access == "gh_read"