Why should you consider 8 Types of Testing?

Software testing methodologies are in fact different approaches to testing, including procedures like unit testing, system testing and much more. So far as the methods of software evaluation are concerned, there is no formally recognized body present, and there is hardly any uniform set of definitions. However, there are certain common categories of testing. Before we learn about them, it is good to take a look at the five elements that are essential for software testing.

The five necessary things for software evaluation

  • Test strategy: This is important for guiding you on the categories of evaluation that should be conducted, the sequence for performing as well as executing them, along with the optimal effort that needs to be put into every evaluation for deriving maximum effectiveness. An ideal strategy is usually based on the major requirements or information regarding what is significant to the clients.
  • Evaluation plan: It involves the testing tasks, dealing with who will be conducting which tasks, along with the starting and ending time as well as the effort required. The plan provides a comprehensive list of the evaluation requisites, including the preparation done during each testing phase.
  • Test cases: These are designed depending upon the strategy which confirms the amount of each evaluation that should be done. The development of the cases is based on the prioritized requirements along with the software’s acceptance criteria. The quality and risk assessment parameters are also kept in mind.
  • Test data: Along with the steps for test case execution, you are also required to systematically arrive at the test data to be used. This might often incorporate sets of product orders, addresses or names, or any other information the system leverages. Development of valuation data is usually carried out along with development of test case.
  • Test Environment: The evaluation process definitely calls for the right place and the right equipment. Evaluation environments might be scaled down editions of the real scenario, but every part is required to be present so that the system can run efficiently.

Kinds of software testing to be considered

Independent software testing servicesConsidering the five essentials of software testing, let us now take a look at the different kinds of evaluation that can be taken into account. Broadly the process can be divided into two categories: Manual Testing and Automation Testing.

Manual testing involves evaluating the software without any kind of automated tool or script. The tester assumes the role of the end-user and evaluates the software for identification of any unanticipated bug or behavior. On the other hand, in automation testing, the evaluator composes script and makes use of another software to test the software in question. This procedure is often utilized to re-run the evaluation scenarios that were done manually, repeatedly as well as quickly.

Apart from these broad types, the process of software evaluation may also be categorized into the following major types:

  • Black Box Testing: These evaluation procedures are based on functionality as well as requirements and not on the knowledge of coding or internal design.
  • White Box Testing: This depends on the knowledge of internal logic pertaining to an application’s code. The evaluations revolve around coverage of code statements, conditions, paths as well as branches.
  • Unit Testing: This is in fact ‘micro’ scale of evaluation involving particular code modules or functions. The programmer and not the tester usually does this, as it calls for extensive knowledge regarding the internal program, code and design.
  • Functional Testing: This category revolves around functional essentials of an application, and should be carried out by certified software testers.
  • Integration Testing: Herein the combined components of an application are evaluated to determine whether they are functioning in unison appropriately. The components may be individual applications, code modules, server and client applications across a network, and so on.
  • System Testing: Based on the requirement specifications as a whole, this procedure takes into account all of a system’s combined components.
  • Load Testing: This involves evaluating an application by subjecting it to heavy load, for instance, checking a website against load ranges for finding out under what condition the response time of the system fails or degrades.
  • Usability Testing: Carried out to determine the ‘user-friendliness’, this subjective procedure depends on the client or end-user.

All these categories have one common aim- to ensure that the software runs effectively and renders the desired output. When all the five testing essentials are in place, the different evaluation types can be leveraged appropriately leading to organizational success.

We provide independent software testing services. If you would like to hire software test professionals from us or would just like to speak to one of our expert software testers, please reach out to us at Mindfire Solutions.


What is the Best Test Case Design Method in Software Testing?

There are multiple test case design methods that are implemented and used by the software testing companies all over. The two most important ones are the Equivalence Class Partitioning and the Boundary Value Analysis. The methods imply that the evaluation case design managers must elaborate the required set of test cases. It has to be remembered in this respect that the conventional methods are not always used during the course of website testing and mobile application testing. However, prior to looking into the other methods and analyzing as to which one is suitable, let us delve a little deeper into understanding why sample evaluations are important and what is the procedure of writing the effective ones.

What are Test Cases?

Software quality assurance servicesSample tests basically include components that elaborate on inputs, actions, events or an anticipated response. The components are meant to find out if the features of the application are working in the right manner. Now, the primary objective of writing the sample tests is to approve the testing coverage of the particular application. These are written down for the purpose of bringing certain standardization while also minimizing the solution- centered approach in testing. The stipulated standards are strictly adhered to by those working in the CMMI QA testing services companies.

Procedure of Writing Test Cases

Writing test cases is a matter of much skill as well as expertise. Various things have to be kept in mind and these include the test case id, the unit that has to be tested or verified, the assumptions, if any, the steps to be executed along with the expected results.

For any application, a variety of test cases need to be included such as negative, boundary and functional test cases. Simplicity is the most important thing when it comes to writing these validation cases.

The Cause-Effect Graphing Method

As already mentioned, the traditional methods are often not used for mobile application testing or website testing. It is here that the Cause Effect Graphing Method comes to play. The method was proposed by Bill Elmendorf. He formulated the question of why the evaluations were needed by making use of the related software. The software elaborates on the required set of test cases that facilitates the entire functionality of the system. The very same procedures that are implemented in hardware logic circuit, are utilized by the cause-effect graphing method too.

The method paves the way for finding both kinds of faults, one that cancels the other as well as those that are made invisible by the other right things. Requirement document is what is most important in the initial stages of this particular procedure of evaluation. The method implies that every input in the requirement is a condition, which can be true or false.

Quality of Software Testing

Any kind of software evaluation, done by means of the different methods as well as techniques, is meant to ensure the quality of the software. Considering the importance of quality testing, it is essential to look into the ways that lead to the development of quality software.

  • To begin with, the developers should be entrusted with the responsibility of evaluating the quality. The lesser involvement of the developers often call for issues arising in the code and these issues are often quite difficult to fix as well.
  • Engaging the users is one effective way of allowing an impressive flow of code from the developer to the user base. Users get the chance to provide feedback on the software and hence, steer further developments in future. Quick response to the feedback is equally important.

Software testing has an importance of its own and there is no possible way in which this task can be eliminated. The importance of the test engineers is increasingly realized by one and all. Alongside, a software test strategy also needs to be created while this should necessarily include the automated, exploratory and manual evaluations that are particularly helpful in reducing risks.

We provide software quality assurance services. If you would like to hire software test professionals from us or would just like to speak to one of our expert software testers, please reach out to us at Mindfire Solutions.

What Does It Really Cost to Fix a Software Defect?

While there is no denying the point that the advancements in software technology have brought about several benefits for the business enterprises all over, it is also true that certain defects in software are really hard to handle.

Software testing servicesThe later the defects are identified, the more difficult and expensive it becomes to handle them. This was said by none other than a software engineer called Barry Boehm back in 1976. He also drew a curve representing the consecutive phases of the waterfall software development lifecycle on the horizontal line. The vertical scale, on the other hand, denoted the relative cost of fixing the particular defect in a specific phase versus the cost involved in fixing the same defect in a different phase. With time, this curve was modified to make room for a second exponential relation.

Finding the Cost of Fixing a Defect

There are certain problems that arise when it comes to the fixing of a software defect. Out of these, deciding upon the cost of fixing the trouble happens to be the most important one. The actual cost involved in finding solution to a problem is often the least understood factor too. Now, the cost usually depends upon the development lifecycle as well as the development process that one chooses apart from the risk that the enterprise is ready to take. Estimation of the cost can be done by means of the following technique:

Considering that all the people working in a system test are completely dedicated to identifying and fixing defects, the number of fixes are to be taken into account. Next, the number of people including that of developers, testers and everybody else along with the duration of system test are to be considered. The process of calculation goes like this:

Average cost of fixing defects= Number of days* number of people* cost per person-day/ Number of defects that have been fixed

It is worth remembering in this regard that it is not the defects but the ones that are fixed that matters while also leading to the right calculation.

How Much Does It Cost?

The attitude taken towards fixing software defects often varies depending upon respective managers. Again, there is some confusion about when to find solution to which defect. Now, the cost of finding solution to the defects is influenced by the organizational culture and its implications. Here is a brief overview:

Routine Culture

In a routine culture, quality is considered valuable by the management but there is neither money nor the time to devote on improving the same. The problems are fixed only after quite a severe one has occurred. The easy defects are identified while the difficult ones are left out. As such, the cost of fixing a problem is the lowest of all.

Steering Culture

In a steering culture, the management realizes that quality is but a systematic issue and automatically, the task of managing is executed better. Problems are openly discussed as well as resolved in an orderly manner. The defects are found earlier than the system test leading to the creation of several bad fixes. Eventually, the cost of solving the problem is the highest among all.

Variable Culture

In a variable culture, the management usually does not consider quality to be a management issue. Personal efforts in solving problems are often preferred over a systematic approach, as a result of which, it is found that the employees identify more defects compared to what they could fix. Accordingly the average cost of fixing a defect is higher than that of a routine culture and lower than that of a steering culture.

Ways of Preventing Defects

Preventing the defects from arising in the very first place is essential for the simple reason that fixing them requires considerable effort, time and money. Early defect detection has a number of advantages. Following a list of some of the prominent ways in which the software defects can be checked:

  • Analyzing the software requirements well beforehand is a significant way of preventing troubles. The specific customer needs are to be analyzed and then transformed into product specifications with expertise. Interactive sessions with the customers is helpful in this regard.
  • Reviews, both self-reviews and peer reviews, work wonders in uncovering defects instead of finding them out later. Self-review, in particular, allows reduction of problems related to implementation of algorithms, incorrect logic and missing conditions. Many software organizations are making this a part of their best practices of coding.
  • Documentation and defect logging leads to better management of the troubles as well as the depletion trends and costs. A defect logging tool allows correction of the problem, identification of the phase and so on.
  • Analyzing the root cause can be done via applying local expertise and targeting the systematic errors. This largely helps in saving time and costs involved in fixing the troubles.

Having considered the above discussion, implementation of the defect prevention procedures into the application software testing process is the most difficult of all tasks. If carried out successfully, it can actually prevent the troubles from arising and pave the way for smooth operation of the enterprises.

We provide software testing services. If you would like to talk to one of our certified software testers, please get in touch with us at Mindfire Solutions.