How to return multiple mock objects from a mocked factory function which returns std::unique_ptr?
Return(ByMove(...))
cannot be used to return multiple times.
Trying to work from this answer: https://stackoverflow.com/a/70751684/3545094
I came up with this:
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();
}
Problem is conversion from lambda to Action it seems:
/.../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) {
| ~~~~~~~~~~~~~~~~~^~~~~~
What am I missing?
Stepping gtest/gmock to 1.10 solves this issue.