#gray box testing

White Box vs Black Box Testing: Choosing the Right Software Testing Methodology

New Post has been published on https://devvee.com/software-testing/ A BASIC WAY OF SOFTWARE TESTING Software Testing is a process to check whether the software system is developed according to the requirements of the client or not and ensure that the developed software is error free. Software Testing is a vast domain and there are 2 ways to perform software testing. Manual Testing Automatic… #Postarticle, #programming automatic testing, black box testing, gray box testing, manual testing, software testing #AutomaticTesting, #BlackBoxTesting, #GrayBoxTesting, #ManualTesting, #SoftwareTesting

Software Testing

A BASIC WAY OF SOFTWARE TESTING

Software Testing is a process to check whether the software system is developed according to the requirements of the client or not and ensure that the developed software is error free. Software Testing is a vast domain and there are 2 ways to perform software testing.

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Manual Testing

Automatic Testing

Manual Testing

As the name suggests, in manual testing, test cases are executed manually by human beings without using any software tool. 

Automatic Testing

In Automatic Testing, software systems are tested using any automation testing tool to execute a test case suit. 

Among these 2 ways of testing a software, manual testing is a basic way of software testing. Let’s have a look at manual testing in detail.

MANUAL TESTING

Manual Testing is a type of software testing in which human beings (testers) find and remove errors in a software application. This is the most traditional and primitive way of software testing and still there are some organizations that strictly follow manual testing. 

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OBJECTIVE OF MANUAL TESTING

An application can never be tested automatically without its manual testing. The main purpose of manual testing is to ensure that the software application is free of errors and bugs. Moreover, the testers have to ensure that the developed software system is according to the functional requirements specified by the customer. During the testing phase, testers design the manual test cases that cover the functionalities of the whole application. The main objective of testing is to resolve all the possible errors that occur during the testing phase.

 After diagnosing the errors, testers report the errors to developers to fix them. Then testers perform retesting and check for more errors. All this process is carried to ensure the quality of software product and to deliver a 100% error-free system.

TYPES OF MANUAL TESTING

Black box testing

White box testing

Gray box testing

BLACK BOX TESTING

In black box testing, testers ensure the functionality of the software according to the client’s requirement. The code is not visible to the tester during testing, that’s why it is called black box testing.

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WHITE BOX TESTING

During white box testing, developers test each line of code and then forward it to the tester for further testing. The code is visible to the developers that’s why it is called white box testing.

GRAY BOX TESTING

Gray box testing is done by someone who knows coding and testing both. As the name suggests, it is the mixture of white box testing and black box testing. That’s why it is called gray box testing.

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HOW TO DO MANUAL TESTING

Testers go through the software documentation to check functional requirements and non-functional requirements.

Create the test cases that cover all the functional and non-requirements.

All the test cases are executed manually by using different types of testing.

If the bugs occurred, testers report to developers to fix them.

Developers rectify those errors and report back to the test engineer.

Testers re-test the software to check that all previous errors are resolved and no new errors occurred.

One of the important stages in the software development life cycle is software testing. There are a number of testing types used for testing the software starting from the development of the application until it reaches the marketing phase. 

Before it is released for production any software has to undergo series of testing such as black box/ white box/ gray box testing, unit/ integration/ system/ acceptance testing, functional/ non-functional testing and verification and validation. Many times the software might function satisfactorily when tested as individual modules but fail when the modules are combined together.  

The black box/ white box/ gray box testing is based on the categorization of testing based on the knowledge of system. As the name "black box" suggests, this type of testing requires no knowledge of internal logic or code structure. The types of testing under this strategy are totally focused on the testing for requirements and functionality of the product/software application.

Black box testing is sometimes also known as "Opaque/ Functional/ Behavioral/ Closed Box Testing". In this the software tester will input the data and check the correctness of the output data. He is not concerned with the internal operations which make the data do what it does.

The aspect of testing that is done by white box testing is normally done by a capable software professional. White box testing strategy deals with the internal logic and structure of the code.

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This strategy is also known as glass/ structural testing and open box/ clear box testing. The tests written based on the white box testing strategy incorporate coverage of the code written, branches, paths, statements and internal logic of the code etc.

Superficial knowledge on software is not sufficient for doing this test. You must have studied the software thoroughly and you should know the functional capabilities of the software. This test will continue to reveal all the glitches in the software until they are all removed.

Gray box testing involves having access to internal data structures and algorithms for purposes of designing the test cases, but testing at the user, or black-box level. Gray box testing can be considered as the combination of black box and white box testing.

The objective of this testing is to find out defects related to bad design or bad implementation of the system. In gray box testing, the test engineer is equipped with the knowledge of system and designs test cases or test data based on system knowledge.

However, just like in the case of black box testing the tester does not have access to the code. Access to the code is available only to the white box testers. A gray box tester can input data into the database and see the output results. He can also perform SQL queries on the database to verify the column values. These are mainly used with client to server testers or individuals who use a database

Gray box testing is also known as gray box analysis. Gray box analysis combines white box techniques with black box input testing. Gray box approaches usually require using several tools together.

In this type of testing debugging of the software is carried out by a software tester who has only a limited knowledge of the internal parts of the program, unlike a white box tester who has access to a code. He has an idea about the individual modules of the system but is unaware of the exact functionality.

The black box and the gray box are similar in that they both view the program from the external point of view. Both the testers do not have internal access to the source code. Since the testers do not have access to the codes there will not be any premeditated thinking and the results will not be biased due to changes made in the code while testing.

Penetration Testing 101 – Part 3 – Gray Box Testing

Gray Box Testing – The Best of Both Worlds? Or a Big Waste of Time?

Gray box testing is a combination of black box testing and white box testing.

What is White Box Testing?

Using automated and manual tools in tandem. They can compliment each other, and to be honest, I believe all good penetration tests are gray box, or should be gray box, in nature. Gray box testing can be contrasted with black…