Strategies for Testing Web Applications through Selenium

Selenium and Web Application Testing

Automated Web Application Testing have become more and more important for software projects for performing functionality testing, regression testing and covering a large number of tests in a short period of time. Various tools help software teams in building and executing automated tests. These tools help in web application testing.

Selenium is a popular Open-source automated web application testing tool, which helps to test web browsers across different platforms. Major browser vendors have taken significant steps to make Selenium Testing Services a native part of their browsers.

Selenium Testing Services help to automate browser interaction so that scripts can automatically perform the same interactions that are performed manually by the users. It enables testing the web application through a user’s perspective and evaluate the following aspects: — navigation, controls, rendering, etc.

Robust Testing Strategies enabled by Selenium:

- Acceptance Testing or Exploratory Testing is the kind of testing that should be performed through Selenium. The test cases should be based on user stories. Such a strategy integrates very well with continuous integration frameworks and tools.

- UI Unit Testing increases test coverage compared to acceptance testing along while limiting the size of the test infrastructure. Developers write the test-cases and target html files embedding the control to unit-test.

Selenium Testing Services for Web Application Testing:

- In acceptance testing, the presence of the elements should be tested before testing their functionality. If the test fails, it becomes immediately obvious if the test has failed due to functionality.

- Navigation, though trival, is a constant source of errors. The different types of navigation errors are broken links or missing pages.

- While using a framework, there is generally no control over the element ids. Here Selenium API with Selenium RC and its capabilities to handle JavaScript can be used to handle such situations.

Best Practices:

- Keeping test suites smaller will help in faster execution and find bugs easily.

- All tests in Selenium does not take more than ten minutes to run for an application.

- Matching a text pattern should be avoided. This is because changes in the text will later on break the tests. Instead of finding the text pattern, the element id should be located. Globbing and Regexps will help to access all the features of JavaScript’s regexp implementation.

- Real SSL certificates should be used in the otherwise it causes to trigger warning in the browser. As Selenium cannot interact with these warnings, its tests will fail.

- In order to consolidate the tests, the test logic should be separated from the page description. Page Objects is a design pattern that represents pages through objects. These objects are then exposed to the test logic as services that provide access to the elements and logic of the page.

Conclusion

When using Selenium Testing Services, the first instinct is to create tests for everything. This is not a good idea as it will increase the size of the tests for features that will eventually change. Instead, it should be initiated with basic tests that ensures the application has the minimum level of functionality. The next step is to proceed with testing the functions that make the business run. Eventually, test suites can be systematically expanded in order to test new features.