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Introduction
to Software
Testing
Testing is the process of evaluating a system or its component
Testing is executing a system in order to identify any gaps, errors, or missing requirements in contrary to the actual requirements.
This tutorial will give you a basic understanding on software testing, its types, methods, levels, and other related terminologies.
This tutorial is designed for software testing professionals who would like to understand the Testing Framework in detail along with its types, methods, and levels. This tutorial provides enough ing redients to start with the software testing process from where you can take yourself to higher levels of expertise.
Before proceeding with this tutorial, you should have a basic understanding of the software development life cycle SDLCSDLC. In addition, you should have a basic understanding of software programming using any programming language.
What is Testing?
Testing is the process of evaluating a system or its componentss with the intent to find whether it satisfies the specified requirements or not. In simple words, testing is executing a system in order to identify any gaps, errors, or missing requirements in contrary to the actual requirements.
According to ANSI/IEEE 1059 standard, Testing can be defined as - A process of analyzing a software item to detect the differences between existing and required conditions that is defects / errors / bugs that is defects / errors / bugs and to evaluate the features of the software item.
Who does Testing?
It depends on the process and the associated stakeholders of the projectss. In the IT industry, large companies have a team with responsibilities to evaluate the developed software in context of the given requirements. Moreover, developers also conduct testing which is called Unit Testing. In most cases, the following professionals are involved in testing a system within their respective capacities −
Different companies have different designations for people who test the software on the basis of their experience and knowledge such as Software Tester, Software Quality Assurance Engineer, QA Analyst, etc.
It is not possible to test the software at any time during its cycle. The next two sections state when testing should be started and when to end it during the SDLC.
When to Start Testing?
An early start to testing reduces the cost and time to rework and produce error-free software that is delivered to the client. However in Software Development Life Cycle SDLC, testing can be started from the Requirements Gathering phase and continued till the deployment of the software.
It also depends on the development model that is being used. For example, in the Waterfall model, formal testing is conducted in the testing phase; but in the increment al model, testing is performed at the end of every increment/iteration and the whole application is tested at the end.
Testing is done in different forms at every phase of SDLC −
Reviewing the design in the design phase with the intent to improve the design is also considered as testing.
Testing performed by a developer on completion of the code is also categorized as testing.
When to Stop Testing?
It is difficult to determine when to stop testing, as testing is a never-ending process and no one can claim that a software is 100% tested. The following aspects are to be considered for stopping the testing process −
Completion of test case execution
Completion of functional and code coverage to a certain point
Bug rate falls below a certain level and no high-Priority bugs are identified
Management decision
Verification & Validation
These two terms are very confusing for most people, who use them interchangeably. The following table highlights the differences between verification and validation.
Sr.No. |
Verification |
Validation |
|---|---|---|
1 |
Verification addresses the concern: "Are youbuilding it right?" |
Validation addresses the concern: "Are youbuilding the right thing?" |
2 |
Ensures that the software system meets all thefunctionality. |
Ensures that the functionalities meet the intendedbehavior. |
3 |
Verification takes place first and includes thechecking for document ation, code, etc. |
Validation occurs after verification and mainlyinvolves the checking of the overall product. |
4 |
Done by developers. |
Done by testers. |
5 |
It has static activities, as it includes collecting reviews, walkthroughs, and inspections to verify a software. |
It has dynamic activities, as it includes executing the software against the requirements. |
6 |
It is an objective process and no subjective decisionshould be needed to verify a software. |
It is a subjective process and involves subjectivedecisions on how well a software works. |
Most people get confused when it comes to pin down the differences among Quality Assurance, Quality Control, and Testing. Although they are interrelated and to some extent, they can be considered as same activities, but there exist disting uishing points that set them apart. The following table lists the points that differentiate QA, QC, and Testing.
Audit − It is a systematic process to determine how the actual testing process is conducted within an organization or a team. Generally, it is an independent examination of processes involved during the testing of a software. As per IEEE, it is a review of documented processes that organizations implement and follow. Types of audit include Legal Compliance Audit, Internal Audit, and System Audit.
Inspection − It is a formal technique that involves formal or informal technical reviews of any artifact by identifying any error or gap. As per IEEE94, inspection is a formal evaluation technique in which software requirements, designs, or codes are examined in detail by a person or a group other than the author to detect faults, violations of development standards, and other problems.
Formal inspection meetings may include the following processes: Planning, Overview Preparation, Inspection Meeting, Rework, and Follow-up.
Testing − It involves identifying bug/error/defect in a software without correcting it. Normally professionals with a quality assurance background are involved in bugs identification. Testing is performed in the testing phase.
Debugging − It involves identifying, isolating, and fixing the problems/bugs. Developers who code the software conduct debugging upon encountering an error in the code. Debugging is a part of White Box Testing or Unit Testing. Debugging can be performed in the development phase while conducting Unit Testing or in phases while fixing the reported bugs.
Key features of our Software Testing Training Institute
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Software Testing Training In Chennai with Placement
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11pt">We want you to take an informed decision before joining any institute. The points mentioned below will help you to differentiate Sql Star from other Software Testing Training Institutes in Chennai.100% Professional Development – Our training will professionally prepare, develop, and upgrade you to prosper in the face of all obstacles. We provide services like resume preparation, placement assistance, and Software Testing interview questions to sharpen your skills.
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Flexible Timings and schedules – We take into consideration the different schedules of our candidates and fix the timings accordingly. We can adapt and be flexible according to your timings and requirements
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