.Software testing is a process of finding defects that is variance between expected and actual result.
Software testing is a process used to identify the correctness, completeness, and quality of developed computer software.
Software testing is an activity to check whether the actual results match the expected results and to ensure that the software system is defect free.
Why testing is necessary?
.Software testing is necessary to make sure the product or application is defect free , as per customer specification.
.Software testing identifies faults whose removal increases the software quality and increases the software reliability.
.Testing efforts is directly proportional to the complexity of the program.
. More complex the program , more the testing effort is required.
Software should be - Error free , - Efficient , - Secured
. Software testing is important as it may cause mission failure,impact on operational performance and unreliable if not done properly.
Software bugs can potentially cause monetary and human loss, history is full of such examples
ChinaAirlines Airbus A300 crashing due to a software bug on April 26, 1994 killing 264 innocent lives.
In 1985,Canada's Therac-25 radiation therapy machine malfunctioned due to software bug and delivered lethal radiation doses to patients ,leaving 3 people dead and critically injuring 3 others
In may of 1996, a software bug caused the bank accounts of 823 customers of a major U.S. bank to be credited with 920 million US dollars.
.jpg)
.jpg)
