Functional software test

Functions are tested by feeding them input and examining the output, and internal program structure is rarely considered unlike white-box testing.

Functional testing is conducted to evaluate the compliance of a system or component with specified functional requirements. Functional testing usually describes what the system does. Functional Testing is the process of verifying that a software application has the functionality it needs according to its requirement specification. In functional testing, each function is tested by giving it a specific value, checking the output, and verifying that its behavior matches what we expect.

Functional testing, also referred to as black-box testing, is a type of software testing where the tester knows little about the internal structure or workings of the item being tested and mainly focuses on whether or not end users have access to what they need. Functional testing is often referred to as black-box testing because it focuses exclusively on application specification rather than actual code.

Every application being developed has some functionality. Functional testing ensures that users can access all of the expected features in an application. It does not test for corner cases or error handling routines.

Black box testing is designed to test the specification of an application and not its internal structures or workings. An older system may not appear to work at all when you enter an incorrect delivery date on a new order. A tester would be looking for this type of behavior in functional testing and would fail the test if the application returned an error message or did not process the order at all.

In other words, functional testing is focused on specific results and behaviors of the system under test as defined in a requirements specification or user story. Unit Testing — This type of functional testing is performed by the programmer who creates unit test cases to ensure that each function does what it is supposed to do given a specific input. Automated unit tests unit tests written automatically by an IDE or other tool are used here for this purpose when possible.

Test Scenario Testing- If you are using Agile methodologies to develop your application, then this type of functional testing is important because it ensures that the development team has included all the necessary business requirements. Test scenario testing is often a collaborative effort between programmers and testers. Test cases are then written for each requirement in a test plan.

Smoke Testing — Smoke tests are quick, informal tests performed at the end of each iteration a period of development. Smoke testing verifies that the latest code build works as expected based on previous test results. Integration Testing — This type of functional testing is often used when several components or systems are being integrated together to form a larger application.

Integration tests ensure that the different parts of the application work together according to specifications, and they can determine whether or not errors occur during integration between the various parts and modules. Sanity Testing — Sanity testing is a quick test that is done during the early stages of development to make sure there are no show-stopper defects. System Testing — System testing is the most formal type of functional testing. In this process, the system under test is put through its paces to determine if it works as expected based on the requirements specifications.

User acceptance testing is conducted by a representative of the people who use an application. In some organizations, this may be a business representative or a customer. We undertake complete responsibility for the testing activities from creating an optimized test plan to post-production support.

We adopt a user-centric testing approach, delivering continuous value improvement in our engagements. We ensure complete traceability of business requirements to the test cases designed and executed for extensive test coverage.

As a professional company for manual testing, we provide extensive reporting with customized dashboards at regular intervals to keep you on top of testing progress and defects.

We provide world-class manual testing services. We follow defined SOPs for both Agile and waterfall development models. All Rights Reserved. Functional Software Testing Expertise. Functional Testing Approach.

Test Automation. Salient Features of our Test Automation Framework Flexible framework facilitates scalability, like adding new test scripts easily Easy and less maintenance of scripts Fine-grained test execution control Highly modularized libraries that reduce redundancy and saves time. Testing Tools. Test Automation Development Our test automation development services combine several approaches in testing while incorporating manual testing in a few areas to detect subtle bugs.

Our test automation efforts progress smoothly by: utilizing efficient automated testing frameworks, structuring automation in such a way that it is scalable and maintainable, managing test scripts and test results, reusing functions, separating data from tests.

Software testing ensures that the application has not any defect or the requirement is missing to the actual need. Either manual or automation testing can do software testing.

It is a type of software testing which is used to verify the functionality of the software application, whether the function is working according to the requirement specification.

In functional testing, each function tested by giving the value, determining the output, and verifying the actual output with the expected value.

Functional testing performed as black-box testing which is presented to confirm that the functionality of an application or system behaves as we are expecting. It is done to verify the functionality of the application. Functional testing also called as black-box testing, because it focuses on application specification rather than actual code. Tester has to test only the program rather than the system. The purpose of the functional testing is to check the primary entry function, necessarily usable function, the flow of screen GUI.

Functional testing displays the error message so that the user can easily navigate throughout the application. The main objective of functional testing is checking the functionality of the software system. It concentrates on:. Unit Testing: Unit testing is a type of software testing, where the individual unit or component of the software tested. Unit testing, examine the different part of the application, by unit testing functional testing also done, because unit testing ensures each module is working correctly.

The developer does unit testing. Unit testing is done in the development phase of the application. Smoke Testing: Functional testing by smoke testing. Smoke testing includes only the basic feature functionality of the system. Smoke testing is known as " Build Verification Testing.

For example, Smoke testing verifies that the application launches successfully will check that GUI is responsive. Sanity Testing: Sanity testing involves the entire high-level business scenario is working correctly.

Sanity testing is little advance than smoke testing. For example, login is working fine; all the buttons are working correctly; after clicking on the button navigation of the page is done or not.

Regression Testing: This type of testing concentrate to make sure that the code changes should not side effect the existing functionality of the system. Regression testing specifies when bug arises in the system after fixing the bug, regression testing concentrate on that all parts are working or not. Regression testing focuses on is there any impact on the system. Integration Testing: Integration testing combined individual units and tested as a group. The purpose of this testing is to expose the faults in the interaction between the integrated units.

White box testing: White box testing is known as Clear Box testing, code-based testing, structural testing, extensive testing, and glass box testing, transparent box testing. Black box testing: It is also known as behavioral testing. This type of testing is functional testing.

Why we called this type of testing is black-box testing, in this testing tester, can't see the internal code. For example, A tester without the knowledge of the internal structures of a website tests the web pages by using the web browser providing input and verifying the output against the expected outcome. User acceptance testing: It is a type of testing performed by the client to certify the system according to requirement.

The final phase of testing is user acceptance testing before releasing the software to the market or production environment. UAT is a kind of black-box testing where two or more end-users will involve. Retesting: Retesting is a type of testing performed to check the test cases that were unsuccessful in the final execution are successfully pass after the defects fixed.

Usually, tester assigns the bug when they find it while testing the product or its component. The bug allocated to a developer, and he fixes it. After fixing, the bug is assigned to a tester for its verification. This testing is known as retesting. Database Testing: Database testing is a type of testing which checks the schema, tables, triggers, etc. It checks the data integrity and consistency. Example: let us consider a banking application whereby a user makes a transaction.

Now from database testing following, things are important. They are:. Ad-hoc testing: Ad-hoc testing is an informal testing type whose aim is to break the system. This type of software testing is unplanned activity. It does not follow any test design to create the test cases. Ad-hoc testing is done randomly on any part of the application; it does not support any structured way of testing. Recovery Testing: Recovery testing is used to define how well an application can recover from crashes, hardware failure, and other problems.

The purpose of recovery testing is to verify the system's ability to recover from testing points of failure.

Static Testing: Static testing is a software testing technique by which we can check the defects in software without actually executing it. Static testing is done to avoid errors in the early stage of the development as it is easier to find failure in the early stages.

Static testing used to detect the mistakes that may not found in dynamic testing.