Gtest：如何在expect_call中每次根据增加的数字返回不同的字符串值？

Question

const std::wstring tesName[3] = { L"Final", L"Partial", L"Best"};

My gtest will call a function GetName() hundreds of times. So I hope that the mocked function of GetName() can return like this:

int i = 0;
EXPECT_CALL(*my_mock, GetName()).Times(AtLeast(1)).WillRepeatedly(Return(tesName[(i++)%3]));

It can always returns the name comes from the array tesName from Final to Partial to Best then start from Final again. But the above code deson't work. How could I do that?

No matter i is a local variable or a member variable of my gtest class, above code doesn't work.

In gmock document:

using testing::ReturnPointee;
...
 int x = 0;
MockFoo foo;
EXPECT_CALL(foo, GetValue())
  .WillRepeatedly(ReturnPointee(&x));  // Note the & here.
x = 42;
EXPECT_EQ(42, foo.GetValue());  // This will succeed now.

But I don't know how to apply it to my case.

Answer 1

If you know beforehand the number of times n the method should be called, you can do something like this:

{
  InSequence s;

  for (int i = 0; i < n; i++) {
    EXPECT_CALL(*my_mock, GetName())
        .WillOnce(Return(tesName[i % 3]))
        .RetiresOnSaturation();
  }
}