Integration Testing

INTEGRATION TESTING:-

Def: 

• => Testing performed to expose defects in the interfaces and in the interactions between integrated components or systems. 
• => Integration Testing is a level of the software testing process where individual units are combined and tested as a group. 
• => A typical software project consists of multiple software modules, coded by different programmers. Integration testing focuses on checking data communication amongst these modules. 
• => Integration testing identifies the problems that occur when the individual units are combined i.e it detects the problem in interface of the two units. 
• => In integration testing the individual tested units are grouped as one and the interface between them is tested. 

Types of Integration testing approaches:-
Approaches used in Integration testing.

• Big Bang Approach 
• Incremental Approach: 

Incremental approachagain divided into following types

I. Top-Down Testing

II. Bottom-Up Testing

III. Sandwich Testing