There are numerous steps involved in the automated functional testing of a web app, such as:
- Determining the functional components of the web app that needs to be tested, which includes basic usability, accessibility, main functions of the application, and error conditions.
- Creating the input data for functionality testing after determining the main components of testing.
- Determining the expected outcome for the functionality based on the input data.
- Executing test cases that are created for functional testing.
- And the last step involves comparing the output results with the expected results, and if the outcome is similar to expected results, then your functional testing is successful.
Although it seems pretty easy to execute automated functional testing of a web app, it’s not that simple, especially for beginners.
Techniques for Functional Testing
Functional testing can be divided into two broad categories –Positive testing and Negative testing, which can later be divided into sub-categories. So, let’s have a look at each of these categories:
- Positive Testing – This type of testing ensures that the product meets the basics requirements of users and work efficiently as expected. It can be divided into three subcategories, which include:End-user based testsDecision-based testsAlternate path tests
- Negative Testing – This type of testing ensures that the application behaves normally, even if it is subjected to unexpected data or continuous changes in the source code. It can be divided into three sub-categories, which include:Equivalence testsBoundary value testsAd-hoc tests.
Best Automated Functional Testing Tools
Although it can be carried out manually as well, testers prefer to use an automated functional testing tool to execute testing quickly. There are multiple tools available in the market, and choosing one amongst them is a bit complicated. Here, we have listed some of the best tools for automated functional testing:
- LambdaTest – It is an incredible cloud-based Selenium Grid that can help you perform automated functional testing of your web app across multiple platforms. Besides, it provides you with numerous features like Screenshot, Video Recording, Live Interactive Testing, etc.
- Ranorex Studio – It is an all-in-one automated functional testing tool for desktop, web, and mobile apps with in-built selenium WebDriver.
- Selenium – If you’re looking for an open-source automation tool, then Selenium is the way to go. If you’re wondering, what is Selenium, you can refer to our detailed page on it.
- JUnit – Businesses who need to test the functionality of their Java applications can opt for JUnit, which is designed explicitly for Unit and System testing of Java applications.
- SoapUI – It is another open-source functional testing tool that is widely used for web service testing. Also, it supports various protocols like HTTP, SOAP, and JDBC.
Apart from the above, there are other automated functional tetsting tools also available in the market. So, before making a decision, do thorough research to select the ideal tool based on your requirements. However, Selenium is still considered as the most preferred tool for automated functional testing.
For functional testing the most common platform is Appium.
Appium testing has various advantages:
- Does not require you to compile the app
- Appium can automate Native, Web, and Hybrid mobile applications and the tests can be executed on Real Devices, Simulators, and Emulators.
- Appium is cross-platform.
- Enables Testers to Automate Apps without Adding Extra Components.
- Provides a Record and Playback Tool.
Steps to automate functional testing:
- Use an automation script for some of the critical journeys.
- Load it on an environment like QAppAssure, by MOZARK, to execute the automation script. Mozark devices are instrumented to do performance measurements (battery drain, CPU/RAM usage) while the automated run is on.
- It will allow you to run automated tests on 100s of devices and while the tests are in progress, it will also capture the system traces and system resource usage and give you a summary at the end of the process