What is Testing in Software ? Better to know before joining MNC's Company.

What is Testing in Software? 

Software Testing is a method to check whether the actual software product matches expected requirements and to ensure that the software product is Defect free. It 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 in contrast to actual requirements.

Some prefer saying Software testing definition as a White Box and Black Box Testing. In simple terms, Software Testing means the Verification of Application Under Test (AUT). This Software Testing course introduces testing software to the audience and justifies the importance of software testing.

Software techniques can be majorly classified into two categories: 

1. Black Box Testing: The technique of testing in which the tester doesn’t have access to the source code of the software and is conducted at the software interface without concern with the internal logical structure of the software is known as black-box testing. 

2. White-Box Testing: The technique of testing in which the tester is aware of the internal workings of the product, has access to its source code, and is conducted by making sure that all internal operations are performed according to the specifications is known as white box testing. 

What is the need of Testing?

Testing is important because software bugs could be expensive or even dangerous. Software bugs can potentially cause monetary and human loss, and history is full of such examples.

• In April 2015, Bloomberg terminal in London crashed due to a software glitch that affected more than 300,000 traders on financial markets. It forced the government to postpone a 3bn pound debt sale.
• Nissan cars recalled over 1 million cars from the market due to software failure in the airbag sensory detectors. There has been reported two accident due to this software failure.
• Starbucks was forced to close about 60 percent of stores in the U.S and Canada due to software failure in its POS system. At one point, the store served coffee for free as they were unable to process the transaction.
• Some of Amazon’s third-party retailers saw their product price is reduced to 1p due to a software glitch. They were left with heavy losses.
• Vulnerability in Windows 10. This bug enables users to escape from security sandboxes through a flaw in the win32k system.
• In 2015 fighter plane F-35 fell victim to a software bug, making it unable to detect targets correctly.
• China Airlines Airbus A300 crashed due to a software bug on April 26, 1994, killing 264 innocents live
• In 1985, Canada’s Thorac-25 radiation therapy machine malfunctioned due to software bugs and delivered lethal radiation doses to patients, leaving 3 people dead and critically injuring 3 others.
• In April of 1999, a software bug caused the failure of a $1.2 billion military satellite launch, the costliest accident in history
• 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.

What are the benefits of Software Testing?

• Cost-Effective: It is one of the important advantages of software testing. Testing any IT project on time helps you to save your money for the long term. In case if the bugs are caught in the earlier stage of software testing, it costs less to fix.
• Security: It is the most vulnerable and sensitive benefit of software testing. People are looking for trusted products. It helps in removing risks and problems earlier.
• Product quality: It is an essential requirement of any software product. Testing ensures a quality product is delivered to customers.
• Customer Satisfaction: The main aim of any product is to give satisfaction to its customers. UI/UX Testing ensures the best user experience.