Test Double Code C++

// Test to add  - this should fail
TEST_METHOD(checkExternalTemperatureConverted) {
	Converter tc;
	Assert::AreEqual(32.0, tc.externalToFahrenheit(), .02);
	}
// class to add 
#include 
class ExternalTemperatureGetter {
public: 
	double getTemperature() {
		double value = rand() % 100; 
		return value; 
		}
	};

// Method to add to Converter:   

ExternalTemperatureGetter* etc = 
     new ExternalTemperatureGetter(); 
public: 
     double externalToFahrenheit() {
     		double temp = etc->getTemperature();   
    		return toFahrenheit(temp); 
		}
	~Converter() {
		delete etc; 
		}