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Can Python Web Applications Be Tested Using Selenium?
Python is currently more popular than any other modern programming language. An interpreted and object-oriented programming language is also very popular among developers worldwide as a powerful server-side scripting language. Since Python allows developers to express concepts by writing less and more readable code, it becomes easier for programmers to significantly reduce development time. At the same time, developers can use popular web frameworks like Django to quickly build high-performance and complex Python web applications. However, developers still need to thoroughly evaluate the look, feel, and performance of a Python web application to maximize its popularity and profitability.
When testing web applications, developers can choose from a number of browser automation tools such as PAMIE, PyXPCOM, Windmill, SST, and Selenium. But most developers prefer Selenium over other frameworks to efficiently test Python web applications. Unlike other web automation tools, Selenium allows testers to write test scripts in a number of languages, including Python, C#, Java, PHP, Ruby, and Python. Thus, testers have the option to test a Python web application by writing test scripts in Python. There are also several reasons why developers around the world use Selenium to test their Python web applications.
Why QA Professionals Prefer Using Selenium to Test Python Web Applications?
Supports Major Operating Systems and Web Browsers
Selenium currently supports all major operating systems and web browsers. The framework currently supports both Microsoft Windows and Linux. Similarly, it is compatible with the most popular web browsers such as Firefox, Chrome, Internet Explorer, Safari and Opera. Compatibility makes it easy for QA professionals to test Python web application tools across multiple platforms and web browsers without writing separate code or using additional test automation tools. Selenium further comes with features to automatically generate and execute test scripts simultaneously across different web browsers and systems.
Allows users to create a Complete Test Automation Suite
Selenium testers can combine Selenium WebDriver and Selenium IDE to create a complete test automation suite. They can use Selenium WebDriver to quickly create browser-based regression automation packages and tests. Additionally, they can scale and distribute test scripts across multiple environments. Selenium IDE, on the other hand, makes it easy for testers to quickly create error recovery scripts. Thus, QA professionals can combine different parts of Selenium to create a complete test automation tool without requiring any licensed or third-party APIs.
Runs tests faster
To identify all bugs and performance issues in web applications, QA professionals need to run tests repeatedly and frequently. But the testers also have to complete all the tests within a limited time. Selenium enables testers to use cloud-based test networks to improve test performance. Besides optimizing the test infrastructure, these tools allow testers to run parallel tests. This makes it easier for testers to run tests quickly and repeatedly. Testers also have the option to choose from several open source cloud-based functional test networks to avoid escalating project costs.
Requires Basic HTML Concepts
Selenium supports a number of modern programming languages. But when testing a Python web application, it only requires basic HTML concepts. HTML is used to describe a web page, while individual HTML tags represent document content. Hence, HTML tags decide how the content will appear in web browsers. Selenium divides HTML elements or attributes into three different categories, namely single, group and customized. It identifies single elements by id, link, or link text, while group elements are defined by concatenated values or an index property. Thus, it becomes easier for testers to locate the defect or bug. This feature makes it easy for them to quickly identify exact errors and performance issues.
Assists testers in resolving maintenance issues
In addition to quickly creating and executing test scripts, QA professionals are also required to maintain test cases effectively. Selenium helps testers overcome persistence issues by structuring automated test code using a pattern called page objects. Page objects focus on the structure of the HTML code of a particular web page instead of checking how services are implemented. That way, testers can use page objects to easily find code, navigate between different web pages, and make changes only once. Since most of the Selenium code will reside inside page objects, testers can easily increase the code base without adding fresh Selenium code.
Selenium provides a Python API
As mentioned earlier, Python supports several programming languages, including Python. So testers have the option to write test scripts in Python. They can also use the Selenium Python API to write acceptance and functional tests by accessing Selenium WebDrivers such as general, support, chrome, Firefox ie remote and phantomjs. The latest version of the API also supports Python 3.2, 3.3, 3.4 and 2.7. Selenium is additionally available by downloading and installing Python packages. Thus, the organization can leverage the skills of existing Python programmers to efficiently perform acceptance and functional testing.
Works with several Test Frameworks
When testing a Python web application with Selenium, QA professionals have the option of using a number of testing frameworks. Currently, the portable web browser automation framework works with Pytest, PyUnit, unittest and robot frameworks. As part of the Python 2.1 standard library, PyUnit allows testers to easily write tests and run multiple tests in text or GUI mode. Likewise, pytest comes with a number of features that help testers write better programs. Thus, a QA professional can use these testing frameworks to ensure that a Python web application provides a seamless user experience across multiple web browsers.
Python is an open source programming language and Selenium is an open source web browser automation tool. Thus, organizations can use a programming language and a web testing tool together to reduce project costs. However, the combination will allow them to test the app on major web browsers for a period of time.
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