Unit test and dependency Injection Example

unit-tests-and-dependency-injection.cpp

class Device { };
class Tablet : public Device{};
class Iphone : public Device{};
class Mobile : public Device{};

class Person {
	
  	//Iphone device; rahter then concrete implementation we are using interface
  	Device * device;
  public:
  	Person(Device * device) {
  		this->device = device;    
    }
  
	/*Person(Iphone device) {
  		this->device = device;    
    }*/
  	
  	void setDevice(Device * device) {
 		this->device = device;
    }
};

class MockMobile : public Device{};
class PersonTest {
	void canAPersonAffordEveryMobile() {
		Person *p1 = new Person(new Tablet());
		Person *p2 = new Person(new Iphone());
		Person *p3 = new Person(new Mobile());
		// We can check multiple configuration
		// or even a mock configration
		
		Person *p10 = new Person(0);
		p10->setDevice(new MockMobile());
	}

};