Risk based testing

What is risk based testing (rbt)?

This is a kind of software testing based on projects after doing an assessment of all the risks inherent in it. The gist of this testing lies in the fact that the risks assessed in the project are prioritised to pin point the tests found most appropriate for the execution of test cycle.

What is the need for risk based testing?

Since risk is a probability of occurrence of a project threatening event and can have a major bearing not only upon the quality of the software product but also on the organisation's finances. In a project there can be infinite number of tests to verify innumerable product functionalities. All of this when added to an environment filled with project deadlines makes the idea of prioritising the risks while testing take centre stage. This is where risk based testing comes handy.

How to carry out the risk assessment for RBT?

A comparison of two different sets of modules or sets is a key element initiated towards assessing risks. An insightful interpretation of some of the most significant business modules is a good first step in prioritising tests based on risks. The following practices go a long way in heading along that direction:

  • Regression testing helps in determining if a change in one part of software can negatively affect the functioning of other sub modules of the same software.
  • Change based testing is one of the best methods to make a fine assessment of the changes made in a software release and then further prioritising on the modified modules.

How to conduct risk based testing?

Risk based testing involves a simple procedure which can be understood by working on the following set of guidelines:

  • A prioritised list of risks is generated. This is a risk identification process and involves making an all encompassing list of all the potential hurdles which can pose a threat to the smooth flow of events in testing based on the seriousness of their likely impact. These risks can be associated with causes delaying the schedule of tests or natural disasters.
  • The process of risk based testing starts quite early in the project, identifying the risks to product quality and this information on the risks involved is used to pilot the test planning, preparation and its eventual execution.
  • Risk based testing includes risk mitigation which helps to reduce the likelihood of defects from occurring in the first place.
  • Even with the possession of a priority wise list of defects, risk based testing is carried out in such a way that all kinds of risks are explored.
  • Risk based testing covers a contingency plan for reducing the potential damage caused due to bugs or flaws which do miss out on being detected.
  • One of the most crucial aspects of risk based testing, that is, risk analysis is also carried out to eke out aggressive strategies which can help prevent those faults which can be a fruit of both testing as well as non testing activities.
  • Risk based testing also helps us in giving us a measurement of our abilities to detect and eliminate flaws from crucial modules within the software product.