运行make时我一直收到这些错误:
debug/main.o: In function `MockMQAdapter<SomeClass>::MockMQAdapter()':
/source/Tests/testsfoo/MockMQAdapter.h:30: undefined reference to `MQAdapter<SomeClass>::~MQAdapter()'
debug/main.o:(.rodata._ZTVN2TW9MQAdapterI6ThingyEE[_ZTVN2TW9MQAdapterI6ThingyEE]+0x10): undefined reference to MQAdapter<SomeClass>::~MQAdapter()'
debug/main.o:(.rodata._ZTVN2TW9MQAdapterI6ThingyEE[_ZTVN2TW9MQAdapterI6ThingyEE]+0x18): undefined reference to `MQAdapter<SomeClass>::~MQAdapter()'
debug/main.o:(.rodata._ZTVN2TW9MQAdapterI6ThingyEE[_ZTVN2TW9MQAdapterI6ThingyEE]+0x20): undefined reference to `MQAdapter<SomeClass>::publish(std::string const&, std::string &message)'
这是我的代码:
#include <gmock/gmock.h>
template<typename S>
class MQAdapter {
public:
MQAdapter(const std::string host, uint16_t port);
virtual ~MQAdapter();
virtual void publish(const std::string queue, std::string message);
};
MQAdapter::MQAdapter(const std::string host, uint16_t port) {}
//Generated by gmock_gen.py
template <typename T0>
class MockMQAdapter : public MQAdapter<T0> {
public:
MOCK_METHOD2_T(publish,
void(std::string, std::string));
};
我非常密切地关注了谷歌模拟指南。我不明白这些错误是什么意思。这是我的测试结果:
TEST(MyTest, ExpectCall) {
MockMQAdapter<SomeClass> *adapter = new MockMQAdapter<SomeClass>("host", 1);
EXPECT_CALL(*adapter, publish("hi", "hello"));
adapter->publish("hi", "hello");
}
答案 0 :(得分:1)
您已声明MQAdapter
析构函数,但未定义它。因此链接器在尝试解决它时会抱怨。提供一个定义,default
就足够了,即virtual ~MQAdapter() = default;
。
另一方面,构造函数的定义应该使用模板参数内联或限定:
template <typename S>
MQAdapter<S>::MQAdapter(const std::string host, uint16_t port) {}
我想这是因为这只是一个例子,但你没有使用MQAdapter
模板参数来做任何事情,所以它可能是一个普通的类。