def METHOD_NAME():
    ''' Check that an instance of DynamoPSy can be created successfully.'''
    invoke_info = DummyInvokeInfo()
    dynamo_psy = DynamoPSy(invoke_info)
    assert isinstance(dynamo_psy, DynamoPSy)
    assert issubclass(DynamoPSy, PSy)
    assert isinstance(dynamo_psy._invokes, DynamoInvokes)
    infrastructure_modules = dynamo_psy._infrastructure_modules
    assert isinstance(infrastructure_modules, OrderedDict)
    assert infrastructure_modules["constants_mod"] == ["i_def"]
    const = LFRicConstants()
    names = set(item["module"] for item in const.DATA_TYPE_MAP.values())
    assert len(names)+1 == len(infrastructure_modules)
    for module_name in names:
        assert infrastructure_modules[module_name] == set()