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Why is Robust Software Testing Necessary?

20th August 2019

Mistakes are made all the time during the development of software solutions and systems. Developers miss semicolons, misunderstand requirements or certain processes may be overlooked. It is almost impossible to avoid bugs in the development process. Executing robust testing on software solutions and systems prevent the release of poor quality products and eliminates the possibility of small mistakes that could lead to large financial losses.

Why is Software Testing Necessary?

Software testing is necessary to ensure that the development of the software or system has met all the specific requirements and functions as expected. This is an inevitable and integral part in the software development process. Implementing a robust software testing process in your software development cycle provides the opportunity to rectify mistakes, which can sometimes be very expensive. It guarantees quality maintenance and acts as a shield against failures.

To provide high-quality software is to implement effective quality management tools, methodologies and processes. This will help to either reduce bugs or create a bug-free environment. Implementing quality management includes quality assurance, quality control, and testing.

What is Software Quality Assurance?

ASQ best describes Quality Assurance as a part of the quality management focused on providing confidence that quality requirements will be fulfilled. The confidence provided by quality assurance is twofold—internally to management and externally to customers, clients and third parties. Quality Assurance is also described as all the planned and systematic activities implemented within the quality system that can be demonstrated to provide confidence that a product or service will fulfill requirements for quality.

What is Software Quality Control?

Quality control is the operational techniques and activities used to fulfill requirements for quality. It is a part of quality management focused on fulfilling quality requirements and is more the inspection aspect of quality management.

What is Software Testing?

Software testing is a process in which a software application is evaluated for software bugs and verified for quality and performance. It checks whether or not the software meets the requirements needed to produce a quality software system. Software testing may either be a manual process which is led by a team or an individual who manually operates the system to ensure it meets the requirements or an automated process which is the use of various tools that simulates the full manual testing process.

The Different Stages of Testing

Large systems are built out of sub-systems that are built out of modules, which are composed of procedures and functions. The testing process should therefore proceed in stages where testing is carried out incrementally in conjunction with system implementation.

Software testing is categorized into functional testing and non-function testing. Functional Testing is a form or testing using the Black Box Testing Technique where the software is tested against the functional requirement specification to determine whether the actual result is in sync with the expected result. Non-functional testing covers all the aspects which are not covered in functional testing (performance, usability, reliability, etc.) of a software application. It verifies the behaviour of the system or software is as per the requirement or not.

Functional Testing
  • Unit Testing
  • Integration Testing
  • System Testing
  • Acceptance Testing
Non-Functional Testing
  • Performance Testing
  • Load Testing
  • Stress Testing
  • Volume Testing
  • Security Testing
  • Installation Testing
  • Recovery Testing

Software Testing Strategies

SQA states that a testing strategy is a general approach to the testing process rather than a method of devising particular system or component tests. Different testing strategies may be adopted depending on the type of system to be tested and the development process used. There are two different strategies available: Top-Down Testing and Bottom-Up Testing.

"In Top-Down Testing, high levels of a system are tested before testing the detailed components. The application is represented as a single abstract component with sub-components represented by stubs. Stubs have the same interface as the component but very limited functionality. Bottom-Up Testing is the opposite of Top-Down. It involves testing the modules at the lower levels in the hierarchy, and then working up the hierarchy of modules until the final module is tested. This type of testing is appropriate for object-oriented systems in that individual objects may be tested using their own test drivers. They are then integrated and the object collection is tested." via SQA

Software Testing Lifecycle

The software testing lifecycle includes a collection of activities executed to perform software testing. It identifies what test activities to carry out and when to accomplish those test activities. In the software testing lifecycle process, each activity is carried out in a planned and systematic way and each phase has different goals and deliverables. The different phase of the software testing cycle include: Requirement Analysis, Test Planning, Test Case Development, Environment Setup, Test Execution and Test Cycle Closure.

Software testing helps to identify defects and errors in early development lifecycle. It reduces rework and maintenance cost and increases the accuracy and reliable usability. With a robust software testing implemented in your development lifecycle, it influences the development of high quality products and services which leads to happy customers, customer loyalty and customer retention.

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