Why is testing required?

Hello friends! in this post, we will study the need for software testing. Human beings are prone to mistakes because of in-attention, incorrect assumptions, carelessness or inadequate knowledge of the system. This very nature of humans makes software vulnerable to bugs, defects, and errors (we will get to know these terms in detail in later posts).

Let’s now briefly see why we need testing in software context-

  • Testing is important as it uncovers a defect before it is delivered to the customer ensuring the quality of software.
  • So that the defects or bugs can be identified in the early stages of development; as later the stage in which bug is identified, more is the cost to rectify it.
  • It makes the software more reliable and user-friendly to operate.
  • An untested software not only makes software error-prone, but it also costs the customer business failure too like in case of Microsoft’s MP3 player – Zune’s crash.
  • Software issues can cost lives too e.g. in case of Therac 25 – many people died due to concurrent programming errors wherein patients were given radiation doses that were hundreds of times greater than normal, resulting in death or serious injury.
  • Well tested software provides efficient resource utilization resulting in low cost.
  • A thoroughly tested software ensures reliable and high-performance functioning of the software.


That’s all I have in this section.¬†Please let me know¬†if you have any questions. Also, Checkout our complete software testing tutorial here

Software Testing Tutorial

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