从一个模拟工厂函数返回多个模拟对象，该函数返回std::unique_ptr

Question

如何从返回std:：unique_ptr的模拟工厂函数返回多个模拟对象？

Return(ByMove(...))不能用于多次返回。

尝试根据以下答案进行操作：https://stackoverflow.com/a/70751684/3545094

我想出了这个：

class MyType {
public:
virtual ~MyType() {}
};
class MyTypeMock : public MyType {};
class MyFactory {
public:
virtual ~MyFactory() {}
virtual std::unique_ptr<MyType> create() = 0;
};
class MyFactoryMock : public MyFactory {
public:
MOCK_METHOD0(create, std::unique_ptr<MyType>());
};
TEST(SomeTest, MyTestCase) {
MyFactoryMock myFactoryMock;
EXPECT_CALL(myFactoryMock, create())
.Times(3)
.WillRepeatedly([]() { return std::make_unique<MyTypeMock>(); });
(void)myFactoryMock.create();
(void)myFactoryMock.create();
(void)myFactoryMock.create();
}

问题是从lambda到Action的转换似乎是：

/.../my_test.cc: In member function ‘virtual void SomeTest_MyTestCase_Test::TestBody()’:
/.../my_test.cc:122:111: error: cannot convert ‘SomeTest_MyTestCase_Test::TestBody()::<lambda()>’ to ‘const testing::Action<std::unique_ptr<MyType>()>&’
122 |   EXPECT_CALL(myFactoryMock, create()).Times(3).WillRepeatedly([]() { return std::make_unique<MyTypeMock>(); });
|                                                                                                               ^
In file included from /.../googletest/1.8.0-57/include/gmock/gmock-generated-function-mockers.h:43,
from /.../googletest/1.8.0-57/include/gmock/gmock.h:61,
from /.../my_test.h:15,
from /.../my_test.cc:12: /.../googletest/1.8.0-57/include/gmock/gmock-spec-builders.h:1008:53: note:   initializing argument 1 of ‘testing::internal::TypedExpectation<F>& testing::internal::TypedExpectation<F>::WillRepeatedly(const testing::Action<F>&) [with F = std::unique_ptr<MyType>()]’
1008 |   TypedExpectation& WillRepeatedly(const Action<F>& action) {
|                                    ~~~~~~~~~~~~~~~~~^~~~~~

我错过了什么？

Answer 1

将gtest/gmock提升到1.10就解决了这个问题。