c++ - 尝试在 GMock 代码中使用 WithArg；错误说它不存在

Question

我正在尝试使用 WithArg在一些测试代码中。我尝试编译的代码如下所示:

using ::testing::_;
using ::testing::Invoke;
using ::testing::WithArg;

EXPECT_CALL(myMock, MockMethodThatTakesAString(_))
                   .WithArg<0>(Invoke(this, &TestClass::FunctionThatTakesAString))
                   .Times(4);

当我尝试编译这个时，我得到了错误

error: ‘class testing::internal::TypedExpectation<void(const std::basic_string<char>&)>’ has no member named ‘WithArg’

我在这里做错了什么？

Answer 1

WithArg<N>是 Action 适配器，不是成员函数。要使用它，请将其作为 WillRepeatedly 中的一个 Action 子句:

EXPECT_CALL( myMock, MockMethodThatTakesAString(_) )
       .Times(4)
       .WillRepeatedly(WithArg<0>(Invoke(this
                                       , &TestClass::FunctionThatTakesAString)));