Testing is performed by any organisation to ensure the quality of the product and continual improvement on the complience.
Testing is the product certification after the product developed and before the customer release.
Testing is a process of executing a program with intent of finding an error or testing is a process used to help to identify the correctness,completeness and quality of developed computer software.
Testing is of three types
1. Black box testing,
2. White box testing,
3. Gray box testing.