Software Testing; Types, their Advantages, and Disadvantages

software testing
software testing

Previously we talked about AWS WordPress, here we are going to discuss software testing. Everything that undergoes manufacturing, also undergoes testing for quality, before sending it to the consumers. Just like that, the software that is programmed by developers is tested first. In today’s time, many types of software are available for the general public’s use. They can computer programs, android applications, iPhone applications, or special ones as well. There are many types of testing to examine and approve/disapprove these programs.

These combinations of codes and lines that a normal person can’t understand, are a vital part of our lives. Precautions are always taken before calling a project complete, just to clear any bug if there is any. It is like proofreading your assignment before its submission. Find the mistakes if they are present, and correct them. Many small mistakes can lead to huge losses in this profession.

Due to a small bug in the software, a bank could lose all its money through the ATM. An airplane could crash if the program stops working out of the blue. A mall could sell items for a much lower price than the real one. A hospital could lose all the details and information about the patients, due to a software crash. Just like that, a single error left unseen, can lead to disastrous consequences. To avoid these troubles, we use software testing.

Types of Software Testing:

types of software testing
types of software testing

Not every type of software can be tested in the same way, neither is it possible. To solve that problem, many types of testing have been created. With each passing day, even more new ways of examining programs are being made, and not all of them can be mentioned here. There are three main categories of software testing. They are:

  1. Functional Testing
  2. Non-Functional Testing
  3. Maintenance

a) Functional Software Testing:

functional testing
functional testing

It is a simple type of software testing, in which the functionality of the software undergoes testing. The internal structure of the program usually undergoes ignorance. It is the way a software’s output is going through examination by giving input. Functional testing also called Black Box testing. It has the following subtypes:

Unit testing:

In this type of testing, each part of the software is undergoes testing. A unit is the smallest part of the program that is functional and can be tested. All functions of the software undergo testing by giving inputs and checking the outputs.

Integration testing:

This is a very important type among these types of testing. It combines different elements of the software and tests them together. The purpose is to check the compatibility of the functions, after their individuality. In the end, all of the functions go through testing together in the form of one single group

Interface testing:

It is similar to integration testing. This type makes sure that data is delivering and receiving correctly between two or more components of the system. It detects errors in the transmission of data, in order to fix them. It brings the whole system together, in a way.

System testing:

It is the complete testing of software. It checks for errors from one end to the other. Everything in the program undergoes examination in this type of testing.

Regression testing:

In this specific type, among all types of testing, already found bugs are tested. A recent bug or a new change or feature is tested, to check the reliability of the software.

Acceptance testing:

Acceptance testing is when the software is complete and is ready for use. It undergoes checking and testing to see if it complies with the actual requirements of the consumer or business.

Sanity testing:

Sanity testing occurs when the software has recently received an update, or a previous bug has been resolved. When minor changes or additions in the code are made, sanity testing is done on the program. Its purpose is to check if it works according to the expectations.

Smoke testing:

Smoke testing has another name, Build Verification Testing. It tests the most important functions of a software endlessly, to check the actual endurance and strength of the program. If the software succeeds, it goes for further testing and examination.

Localization testing:

It is the process in which the software is checked if it is ready to be released in a certain population or place. It is adjusted according to the target audience. Sometimes, the software is even customized according to the region they are to be used in.

Globalization testing:

It is the most important in these types of testing, as it makes sure that the program can be released into the world. The software undergoes testing in its ability, whether it is working regardless of the location of use. Multiple language input and output are also checked and added.


It checks the overall compatibility of the component with other systems. It checks whether the program will be compatible with other parts of the system, and run smoothly.

b) Non-Functional Software Testing:


It is the most important one among the many types of testing. Nonfunctional testing Tests and examines the more internal parts of the software. It focuses mainly on the working of a software, rather than its output. The way the program operates goes through a thorough examination. These are the following subtypes it carries:

Stress testing:

It the types of testing where the program undergoes extreme load. It checks the reliability of the software, and how well it can work under a lot of stress. Making a crash report with thorough details is a must.

Performance testing:

It checks the overall performance of the software. The speed, stability, and response rate go through testing. This step is done when the software is complete, and this is one of the last few steps before release.

Load testing:

This is the step in types of testing in which the software’s response and functionality are examined under different loads. It is tested under expected loads, as well as minimal and maximal loads.

Security testing:

It includes the testing of the privacy and security of the program. The software is tested for any security breaches, from where data can be extracted by hackers. After finding the breaches, they go through closing.

Volume testing:

Flood Testing is another name for this type of testing. In this step, the enormous size and volume of data are given to the software. It is important to know that the software can analyze the data and in how much time.

Install testing:

Implementation Testing is another name for this type of testing. This is the actual last step of the testing process. The whole program undergoes installment and tests to see if it works as per the expectations. It is also seen if all the components are installed as they should.

Recovery testing:

This step in the types of testing determines the quality of recovery that the software has. Like how long does it take to start up again after a crash, or hardware failure, etc?

Reliability testing:

This method of testing makes sure that the software is reliable. It is checked that the expected results are received in different scenarios. The failure rate is assessed.

Usability testing:

This step takes place by surveying the ease of use of real people. The program is distributed among users, and the difficulty level of the user interface is checked. All of this happens in the supervision of the researcher.

Compatibility testing:

This step takes place when the program passes through all the above steps. The software is going through testing to see whether the program is able to work properly in accordance with the operating system, the hardware, and other software.

Compliance testing:

This is when all types of testing are clear. It’s when the company checks the program’s potential to function as described by the developers.


This type of testing takes place on software after the release. The program undergoes checking from time to time, in order to resolve any bug. New features add, and the overall system enhances as well with this method. After changes the changes, it undergoes testing again thoroughly. It has the following types:


This is where a working program is undergoing for errors. The error is then taken out from the code of the software, and then it undergoes correction. After further testing, the program is released for use once more.


This is the modification of the software while it is available for use. Constant upgrade and testing of the program as time passes by is vital for its survival.


This is the enhancement process of the software. New and polished features are present in the program.


This is the maintenance that takes place while the software is still working perfectly. This is to prevent future errors.

Advantages of Software Testing:

The testing process is crucial before and after releasing software. It has a lot of advantages. Some of them are as follows:

  • Avoiding software failures.
  • Special software which the bank, military, stocks, supermarkets, and other major sectors use is really strong. They undergo repairing from time to time.
  • The software quality undergoes enhancement.
  • Privacy falls into protection when the databases continually undergo checking for breaches.
  • Updates of the software make the program compete with other latest ones.
  • When the software undergoes testing before its release, future problems don’t take place.
  • The more a company tests its software and repairs them, the better their image is as a team of developers.
  • Constant testing and maintenance cause customer satisfaction.
  • It prevents emergency error fixations.
  • It prevents future huge crashes in the system that cause a lot of money to repair.
  • The types of testing are very elaborate and can detect and fix any bug.
  • The more reliable and strong your software is, the more recognized you will get.
  • The more recognized you or your team gets, the more customers you will have.
  • More sales mean more profit.
  • The better you get at making your software strong, the higher the quality of your work will be.
  • Safety breach prevention will reduce the risk of data stealth.
  • The addition of multiple languages is beneficial for the globalization of the software.

Disadvantages of Software Testing:

  • It is very time-consuming.
  • Not everyone can do software testing the way it has to be done.
  • It increases the cost of the software.
  • The team of developers requires a lot of members.
  • It requires many people with high expertise.
  • The testing surveys require real people to test the programs thoroughly. Some of them are dishonest and a data collection error might occur.
  • Repetitive maintenance tests ran by the same person might not reveal any hidden bugs.
  • Human error might occur during the process of the addition of new features.
  • The program might actually become weaker instead of improving.

Final Verdict

Software testing is vital before the public uses it. It is basically the backbone of the software. There are many types of testing. Some test the software before release and others test it after release. The maintenance testing is just as necessary as the pre-release testing.

A lot of accidents have happened in the past due to software failures. They happened due to lack of proper maintenance testing of the program that had been running. Lessons have been learned from those losses, and now software is tested all the more. The examination takes place both before and after the release. The developers are now very cautious about every aspect and component of the program.

With the proper amount of testing, the quality of the program can be increased. Although this will also raise the expenses of the software. This is not regrettable, as the better quality will attract more customers. The more customers you get, the higher your recognition will be. That will, in turn, get you more sales. These were the types of testing, advantages, and disadvantages. You have to make a proper testing plan before releasing the product. A maintenance plan is also made before release and is executed after the release.


I am a Software Engineer with ample experience in making games, websites, mobile apps and augmented reality solutions.

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