I have written a class that enumerates over the operating system's physical displays, retrieving their information and capabilities. I actually would like to test that this class works appropriately and embrace (unit) tests in general.
However, I have no idea how I would go about testing this class. Leaving the implementation details aside, it's basically defined as so:
class VideoMode {
public:
int64 width;
int64 height;
std::vector<int64> frequencies;
}
class Display {
protected:
std::vector<VideoMode> modes_;
std::string display_name_;
std::string adapter_name_;
bool primary_;
public:
Display(char* osDevName, char* osAdapterDevName);
// typical getters
}
How would I go about testing something that is so deeply integrated and dependent on the OS, and the physically attached hardware. I understand that writing an unit test for a class like this is difficult, so what alternatives do I have?
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