Achieve behavior-driven software development with good knowledge of the testing approaches!

There are standard methodologies for testing the software implemented by the Agile teams to implement required changes and add new features. However, it is observed that some teams might throw away the standard testing process, while others strictly adhere to it. Eventually, both approaches are undesirable as the test scenarios and cases should be developed before coding, in the form of iterations. This is a way followed in Agile software development.

To make the feedback loop tighter, you need to work on smaller pieces. When the testing process runs over the feature level rather than designing test cases intricately and spending a high time to create a test plan, it exceeds the efficiency of the software project. At feature level, all features are taken as mini projects of the testing project that starts even before code is written. Thus, the coding and testing processes occur simultaneously. Ideally, you have to develop the test cases before test design.

Automation is another expect that should be considered in Agile testing. Due to many short iterations in the release of software, regression testing is significant, which also makes automated testing essentially important. Ideally, automated tests should be generated before implementation of the features in the Agile testing, which is often referred as truly test driven Agile approach. However, in reality this only rarely happens.

Quality assurance and testing is a huge world just as the development itself. There are several methodologies and concepts involved in the process of development. Similarly, there are as many ways to test the software in this field keeps on evolving with time. Usually, you call the professionals who test the software as QA specialists. There are different approaches applied to testing, whereas most commonly used are the following six. Let’s have a look over the six basic types of software testing:

Software-Testing-methodologies

Black Box

It is most used in software testing to give a look of software as a box. This type of testing takes place as if the software is a black box. This refers to the idea you do not think outside the box. You are focused on the inputs and outputs and do not reason the actual output. You are not aware about the code working and just try to produce a specific output for the specific inputs. Whether it works or not this type of test is used the most, since it is unbiased at large. There are certain pros and cons of this testing method.

Black-Box-Testing

Pros

– It looks down the input and outputs specifically for the box

– Even the non-technical individuals can become a tester

– It gives a user’s perspective in testing

Cons

– It does not surface the reasons of error

– It is complex to create test case design

– There is very limited knowledge is available for the tester about the software application

White box

On contrary to black box testing, in white box testing the tester has the knowledge of the source code to some extent, so they have a fair understanding of the system’s internals. Thus, tester can inform the process of testing and focus their target on essential outputs. Being the opposite of Black box, this type of testing offers you at least an idea about what is happening within the software. Some people think white box is a unit testing; however, it is not true. For instance, in an accounting software that requires solving the complex calculations via code, it will be evident that a specific code section performs only one set of calculation for certain values while for another value other set of calculations. Thus, you are informed about the both scenarios for creating tests. Here you can encounter the potential difference among the two; white and black box testing. In black box you don’t even have the idea of the two scenarios, unless you got lucky.

White-box-testing

Pros

– More efficiently discover the hidden bugs in the software

– It helps in optimizing the code

– It spots the bugs and problems very fast

Cons

– Tester must have the technical background to have a coding knowledge in order to perform this type of testing effectively.

– Access to code is required

– It might not discover the missing functions as it targets the existing software

Acceptance

This type of tests are based on testing the customer expectations or requirement specification using some test cases while also testing the software on the whole. It is also well known as system testing and user acceptance testing. This type of testing is conducted to test the usability or functionality of the software system or even both. Basically, it tests what s happening in the software versus to what is expected from it.

Acceptance-testing

Pros

– It helps in the discovery and fixation of the issues relevant to usability very early

– It portray your system usability

– It is easy to integrate the feedback in an early stage of development

Cons

– It requires time to set up

– Requires a different environment for testing, rather than same testing environment

– It requires a test audience that is well defined

Automated

This type of testing involves an automatic process to execute the test and verify its results. Taking an example of the web application test, you can automated it by scripts running on web that opens a page, take input some data, clicks a button, and find out the page results. The automated testing can be implemented on an API, where you write the scripts and call out for the different data to API; thus, checking for the obtained outcomes. Within the fast-paced and quality driven software market, automated testing has become more common than ever. It is because of many reasons including the cost effectiveness of this method.

Automated-testing

Pros
– Cost effectiveness

– Re-work reduction as it helps to avoid the over work involved in running the software again and again

– More efficient, error free, and reliable

– You can get hidden information from the software by programming the sophisticated automation tests.

– Even if the software interface changes you can reuse the tests

Cons

– You will need expert level proficiency for writing the scripts for automation tests.

– It may lead to a deadly consequences if there is an error in the script; the major concern is to debug the test script.

– Playback methods are most costly test maintenance. In case of the small changes in the GUI you have replace the test script with a new script.

– If it requires for the test scripts to test more screens it is more complex to maintain the data files for test.

Regression

This type of testing is usually conducted to verity if the software application is working with same efficiency as it was working before. Thus, it tests the functionality of the software for it is not backsliding. Agile development emphasizes on regression testing as it works through incrementing, so there is a likelihood that adding new functions might affect the existing features. Mostly, automation tests are regression and even some think that all automation test are regression. However, this is not the case as the sole purpose of the automation is to help the test script run several times so as to achieve perfection.

Regression-testing

Pros
– It ensures the quality of the software product and its improvements

– Regression check is applied to automation

– It also makes sure that the issues encountered earlier do not occur again

– It avoids any side effects of the new code on previous work tested

– Can be implemented in iteration testing if required.

Cons

– It can be tedious process if you do not use the automated testing tools

– The small changes may cause unexpected issues so you need to conduct the regression test even for the smallest of modifications

– It is likely that you underestimate the cost, effort, and time required for the tool

Functional

It is kind of testing where the system’s actual functionality is tested. You might think, testing is always meant to test the system functionality so how is this different. However, if you really understand testing, you know that testing can be done for scalability, usability, resilience, security, performance and much more, which are not included in the functional requirements of the system. Whereas, functional testing is based on what is expected from the system and what it is doing from the functional perspective. For instance, are you getting the expected outcome if you push that button?

Functional-testing

Pros

– It helps in evaluation of the software system before it is delivered to the customer

– Enhances actual use of the system

– Testing takes place in an environment closer to customer’s environment. Ideal is to operate on same database, browsers, systems etc.

– Address the client as well as user requirements

– Quality improvement of the software system

Cons

– Redundant testing has high probability

– There is little possibility that functional test misses out the logical blunders in the system

– Readiness of the software application is not guaranteed to go live

Exploratory

In this type of test you need a set of guidelines to implement the testing process effectively. It is to make sure that you have the knowledge of exactly what you want to test and how are you going to do that. Thus, you can begin without test cases and verify if the system behavior is wrong or not. This test might piss you off as they are time consuming.

Sometimes, you can record the sessions of exploratory tests, in case finding an error, you can trace out the problem and reproduce it via following the steps used by the exploratory test. Although, not much recommended by the software testers, you have to acknowledge its potential to discover bugs that are not uncovered by any of the rational test cases.

Exploratory-testing

Pros

– It saves much time as it is based on the cognitive thinking of the tester so no need for pre-treatment

– Previously obtained results are used to give insight on the given system behaviour or error

– It gives idea of the system and its capability to successfully pass the test cases

Cons

– This testing method may tend to overload some defects

– Testers adhere to certain scenarios strictly in order to verify the persistence of their success or performance tendency of the system

CONCLUSION

Undoubtedly, we have covered only the most well-known testing methodologies and there are several other classifications of software testing; such as load, recovery, performance, security, accessibility, usability, stress, etc. These standard testing methodologies can deliver a robust software that help you in predicting the software system timeline. This requires identification of the risk areas and prioritizing them, then running a set of tests to test the expected functionality is achieved or not. When verifying the functionality and it is different from desired results, these are considered errors or defects that are addresses based on the priority. Some defects may have low severity and may be left untreated while those with high severity may be corrected.

Invision Solution handles your software testing carefully to mitigate the potential risks associated with your requirements of the system and how it affect your users. Since, a software becomes even more complex with a large number of devices and platforms it operates on. We ensure that your software application best comply with the standard requirement specification for operation and installation.

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