Software Testing Free

Medical Apps For Doctors教育2019-04-17

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更新日期：2019-04-17

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Quality matters- be it a product or a software. And software testers are hired to check this quality. Software testing not only helps to deliver a reliable product but also helps to gain customer loyalty and build brand value.

What is Software Testing:

Software testing is a process, to evaluate the functionality of a software application with an intent to find whether the developed software met the specified requirements or not and to identify the defects to ensure that the product is defect free in order to produce the quality product.

Let’s see standard definition, software testing types such as manual and automation testing, testing methods, testing approaches and types of black box testing.

Definition:

According to ANSI/IEEE 1059 standard – A process of analyzing a software item to detect the differences between existing and required conditions (i.e., defects) and to evaluate the features of the software item.

What is Software Testing?

Software testing is defined as an activity to check whether the actual results match the expected results and to ensure that the software system is Defect free. It involves execution of a software component or system component to evaluate one or more properties of interest.

Software testing also helps to identify errors, gaps or missing requirements in contrary to the actual requirements. It can be either done manually or using automated tools. Some prefer saying Software testing as a White Box and Black Box Testing.

In simple terms, Software Testing means Verification of Application Under Test (AUT).

Why is Software Testing Important?

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 software glitch affected more than 300,000 traders on financial markets. It forced the government to postpone a 3bn pound debt sale.

Nissan cars have to recall 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 store served coffee for free as they unable to process the transaction.

Some of the 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 Window 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 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 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.

Types of Software Testing :

Typically Testing is classified into three categories.