Software testing Basics - software testing history, process, classification, benefits, limitations

Japanese securities companies exceed 400 Billion yen loss bug
19990 year at&t Company disconnection , The loss exceeds 7500 pill
The millennium bug bug, The global losses exceed 5000 Billion


Early definition
Software testing builds confidence that the program will run as expected .
IEE Definition
The process of using manual or automatic means to run or measure software systems , To verify whether the software system meets the specified requirements , And find out the difference between the expected results .


Resource process technology , Technology is the means ,
Doctor test coverage , Improve test efficiency

The principles of software testing

The test shows that the defect exists , But it cannot be proved that the system is free from defects
It's impossible to run out of tests , Conditions for timely termination should be set .
The test should have taken place this morning