Testing Basic Interview Questions

Functional testing means testing the application against business requirements. Functional testing is executed using the functional specifications given by the client or by the design specifications according to use cases given by the design team. Role of functional testing is to validating the behavior of an application. Functional testing is more important because it always verifies that your system is fixed for release. The functional tests define your working system in a useful manner. In functional testing tester has to validate the application to see that all specified requirements of the client whatever we have said in SRS or BRS have been incorporated or not. Functional testing  is always concentrating on customer requirements and whereas the Non-Functional testing is always concentrating on customer expectations. Functional and Non Functional Test Cases Functional test cases target business goals and non functional test cases target performance, resource...

Regression Testing is done to ensure that fixed bug does not affect the remaining functionality of the modules and also the functionality of the same module. In short you can say regression testing  is always done to verify that modified code does not break the existing functionality of the application and works within the requirements of the system. Regression Testing Example  For Example there are three Modules in the Project named Admin Module, Personal Information, and Employment Module and suppose bug occurs in the Admin Module like on Admin Module existing User is not able to login with valid login credentials so this is the bug.  Now Testing team sends the above - mentioned Bug to the Development team to fix it and when development team fixes the Bug and hand over to Testing team than testing team checks that fixed bug does not affect the remaining functionality of the other modules (Admin, PI, Employment) and also the functionality of ...

Sanity Testing is the subset of Regression Testing and it is performed when we do not have enough time for doing testing. Sanity testing is the surface level testing where QA engineer verifies that all the menus, functions, commands available in the product and project are working fine. Sanity Testing Example For Example in a project there are five modules like login page, home page, user detail page, new user creation, and task creation etc. So we have the bug in login page like on login page username field accepts the less than six alpha-numeric characters which are against the requirements as in requirements it is specified that username should not be below than six characters but as username accepts the less than six characters it is the bug.

Smoke testing is the surface level testing to certify that build provided by development to QA is ready to accept for further testing.  What is Smoke Testing? Smoke testing is non-extensive software testing, which makes sure that the most crucial functions of a program work, but not bothering with finer details because in smoke testing we only checks the major functionality of the software. Smoke testing is performed by developers before releasing the build to the testing team and after releasing the build to the testing team it is performed by testers whether to accept the build for further testing or not.  Smoke Testing Example For Example in a project there are five modules like login, view user, user detail page, new user creation, and task creation etc. So in this five modules first of all developer perform the smoke testing by executing all the major functionality of modules like user is able to login or not wit...

Verification and Validation example is also given just below to this table.                Verification               Validation 1. Verification is a static practice of verifying documents, design, code and program. 1. Validation is a dynamic mechanism of validating and testing the actual product. 2. It does not involve executing the code. 2. It always involves executing the code. 3. It is human based checking of documents and files. 3. It is computer based execution of program. 4.  Verification uses methods like inspections, reviews, walkthroughs, and Desk-checking etc. 4.  Validation uses methods like black box (functional)  testing, gray box testing, and white box (structural) testing etc. 5.  Verification  is to check whether the softwar...

When individual software modules are merged and tested as a group than it is known as integration testing . Integration testing is sets between Unit Testing and System Testing. Integration Testing Example For example you have to test the keyboard of a computer than it is a unit testing, but when you have to combine the keyboard and mouse of a computer together to see its working or not than it is the integration testing. So it is prerequisite that for performing integration testing, a system must be unit tested before. Black-box test case design tactics are the most typical during integration, although limited amount of testing of white box may be used to ensure description of major control paths.  Why we need integration testing? Integration testing  is executed to establish whether the components interact with each other consort to the specification or not.   Integration testing in large refers to joining all the components resulting in the com...

Unit testing is a confusing part of the software development process. Unit testing involves individually testing unit of code separately to make sure that it works on its own, independent of the other units.  Unit testing is essentially a set of path, test performed to examine the several different paths through the modules.  Unit testing is remarkably done by programmers with the help of Unit framework (like J Unit, CPP Unit etc. depending up on the language source code is written). Unit testing is usually an automated process and performed within the programmers IDE. Unit testing is an action used to validate that separate units of source code remains working properly. Example: - A function, method, Loop or statement in program is working fine. It is executed by the Developer. In unit testing Individual functions or procedures are tested to make sure that they are operating correctly and all components are tested individually. Unit testing is a strategy that...