Software testing is a method of verifying whether the actual software product meets expected requirements and of ensuring that the software product is free from defects.
This involves the execution of software/system components using manual or automated tools to evaluate one or more properties of interest. The purpose of software testing is to identify errors, gaps, or missing requirements against the actual requirements.
Some prefer to say that software testing is a white box and black box testing. Simply put, software testing means verification of the application under test (AUT). This tutorial introduces the testing software to the public and justifies its importance.
Importance Of Software Testing
Software testing is important because if there are any bugs or errors in the software, they can be identified early and can be resolved before the software product is delivered.
A properly tested software product guarantees reliability, security, and high performance, which translates into time savings, cost efficiency, and customer satisfaction.
Testing is important because software bugs can be costly and even dangerous. Software bugs can potentially cause financial and human losses, and history is replete with such examples.
- In April 2015, the Bloomberg terminal in London crashed due to a software glitch that affected more than 300,000 traders in the financial markets. This has forced the government to postpone a £ 3bn debt sale.
- Nissan cars have recalled more than a million cars from the market due to a software failure in the airbag sensory sensors. Two crashes have been reported due to this software failure.
- Starbucks has been forced to close about 60% of stores in the United States and Canada due to a software failure in its point-of-sale system. At one point, the store served coffee for free because it was unable to process the transaction.
- Some of Amazon’s third-party retailers have seen the price of their product drop to 1p due to a software glitch. They ended up with heavy losses.
- Vulnerability in Windows 10. This bug allows users to escape security sandboxes through a vulnerability in the win32k system.
- In 2015, the F-35 fighter jet suffered a software bug, rendering it unable to properly detect targets.
- China Airlines Airbus A300 crashed due to a software bug on April 26, 1994, killing 264 innocent people live
- In 1985, Canada’s Therac-25 radiation therapy machine malfunctioned due to a software bug and delivered fatal doses of radiation to patients, killing 3 people and seriously injuring 3 others.
- In April 1999, a software bug caused a failed $ 1.2 billion military satellite launch, the costliest crash in history
- In May 1996, a software bug caused the bank accounts of 823 customers of a major US bank to be credited with US $ 920 million.