Question

Directions: C++. Answer the question below in paragraph format.

Many people think of programming as simply writing the code. By now, you have seen that design of the program is an important part of programming. Design is one of the initial steps in creating a program. Testing is part of the final steps in programming. There are many different forms of testing. Compare and contrast the testing concepts of Unit Testing or Integration testing.

Answer 1

The idea behind Unit Testing is to test each part of the program and show that the individual parts are correct. It can be performed at any time. Unit Testing tests only the functionality of the units themselves and may not catch integration errors, or other system-wide issues. It pays attention to the behavior of single modules. Unit test does not verify whether your code works with external dependencies.correctly.  It is usually executed by developer. Finding errors are easy. Maintenance of unit test is cheap.

Consider You are developing An application for Airline

which has following functonalalities :-

• Add a flight
• Remove a flight
• Search the flight based on flight number
• Search the flight based on departure city
• Sort According to the Least Fair
• Update the flight Details

so you will write different unit test cases for all the functionalities or modules, all are independent of each other. so there will be six unit test cases in these example. You will only check if the particular functionality is working or not.

On the other hand The idea behind Integration Testing is to combine modules in the application and test as a group to see that they are working fine. It usually carried out after Unit Testing and before System Testing. Integrating testing may detect errors when modules are integrated to build the overall system. It pays attention to integration among modules. Integration tests verifies that your code works with external dependencies correctly. it is usually executed by test team. Finding errors are difficult. Maintenance of integration test is expensive.