我可以 Return 并触发一个动作吗？用 .WillRepeatedly 增加一个计数器？

Question

我想触发一个动作 AND Return 在 googlemock 上 .WillRepeatedly() 的东西。

有人知道怎么做吗？（正在编写一个将增加引用参数的函数，而 return 我想要的是这里唯一的选择吗？）

这是我失败的尝试：

EXPECT_CALL(parser, getTemplateFileName(_))
  .WillRepeatedly(Invoke(parser.counter++), Return(TEMPLATE_NAME));

class TemplateParser: public Parser
{
    public:
        MOCK_METHOD1(getTemplateFileName, std::string(const string& name));

        void incrementCounter()
        {
          ++counter;
        }
};

// ...

EXPECT_CALL(parser, getTemplateFileName(_))
  .WillRepeatedly(Invoke(&parser, &TemplateParser::incrementCounter),
                  Return(TEMPLATE_NAME));

编辑:

正如kerrek提到的那样，我已经试过了：

EXPECT_CALL(parser, getTemplateFileName(_))
  .WillRepeatedly(DoAll(
                  Invoke(&parser, &TemplateParser::incrementCounter),
                  Return(TEMPLATE_NAME)
                       )
                  );

但我收到如下错误：

/opt/gmock-1.7.0/include/gmock/gmock-more-actions.h:80:   instantiated from ‘Result testing::internal::InvokeMethodAction<Class, MethodPtr>::Perform(const ArgumentTuple&) const [with Result = void, ArgumentTuple = std::tuple<const std::string&>, Class = TemplateParser, MethodPtr = unsigned int (TemplateParser::*)()]’
/opt/gmock-1.7.0/include/gmock/gmock-actions.h:371:   instantiated from ‘typename testing::internal::Function<F>::Result testing::PolymorphicAction<Impl>::MonomorphicImpl<F>::Perform(const typename testing::internal::Function<F>::ArgumentTuple&) [with F = void(const std::string&), Impl = testing::internal::InvokeMethodAction<TemplateParser, unsigned int (TemplateParser::*)()>]’
test/src/ParserTest.cpp:315:   instantiated from here
/opt/gmock-1.7.0/include/gmock/gmock-generated-actions.h:83: error: too many arguments to function
/opt/gmock-1.7.0/include/gmock/gmock-generated-actions.h:83: error: return-statement with a value, in function returning 'void'
make: *** [test/obj/ParserTest.o] Error 1

Answer 1

您可以使用 DoAll，正如 Kerrek 在评论中建议的那样，使用 InvokeWithoutArgs。

另一种方法是创建一个自定义函数，使用 lambda 以非常直接的方式执行这两个操作。

EXPECT_CALL(parser, getTemplateFileName(_))
    .WillRepeatedly(InvokeWithoutArgs([&]()
                                      {
                                          parser.counter++;
                                          return TEMPLATE_NAME;
                                      });

我可以 Return 并触发一个动作吗？用 .WillRepeatedly 增加一个计数器？

Can I Return and trigger an action e.g. increment a counter with .WillRepeatedly?

c++

mocking

googlemock

gmock