What is a real life example of Integration Testing

[Deeptish]

What is a real life example of Integration Testing

[Goraksha]

Real life example would be,
In day to day life we use mobile phones. Now we can send messages to any other mobile irrespective of mobile manufacturer and service provider. Our main intention would be communication between mobile phones.
Consider sender and receiver as two different modules so integration is successful if we can receive what sender has sent and vice versa.

[Kapil.52]

Lets have an example of an School Exam application where marks obtained by a student is to be displayed to parent login along with the Attendance of the child till the date of exam. In this case the Attendance module and Exam module both are seperate modules. Still we are expecting that marking of Absent/Present by a teacher in Attendance module should get reflected over Exams module. It means if there are any manipulations made with the student attendance by the respective teacher then they should get reflected in the Exams module also.
In this case, we can say that the Attendance module and Exams module are INTEGRATED with each other.

[thebobblogs]

My real example is
One project have to implement feature on web app and web service which consumed by web app.
System Test will be done seperately at the same time in different test team.
Integration Test will be done together to see if they can work together after System Test is completed.

[usabaski]

See if this helps to understand 'Integration' much better. Computer components Monitor,CPU,Mouse,Keyboard etc. can be tested seperately if it works, but cannot perform independently. But only when all these individual components are connected thro appropriate cables and installing neccessary softwares, it works as a PC (personal computer). After this 'Integration' process, all components are able to perform and communicate with each other.

[dheerajs]

Integration testing is the process of testing interfaces among different module to see, whether they work as per requirement when they are combined.
Unit testing is done before Integration testing.
Real life example:
Lets manufacture a laptop. Here we can design and build Hard disk, Mother board, Dvd reader, lcd(or nowadays led) screen, web cam, keyboards etc. separately. After these parts are ready and unit testing is done, we will combine two or more parts and test, whether integrating these parts will work as per requirement or it produces some error. This is called integration testing. Generally it has two approach 'Top-Down' and 'Bottom-Up'. Sometimes 'Big-Bang' approach is also done where we combine all the module at one time and then integrate.Once the integration testing is done we do system testing and then Acceptance testing.