In the fast-moving mobile world, extraordinary functionality delivery for devices and operating systems is the key to mobile app success. While Selenium is still the leading suite for web applications and cross-device testing, its reach does not extend to native mobile apps. Organisations need a broad perspective and exploration of alternative frameworks especially designed for mobile app automation.
This article explores the world beyond Selenium and reveals the most powerful open-source frameworks to boost your mobile app testing strategy and take your cross-device testing to the next level.
Understanding the Mobile Testing Landscape: Exploring Alternative Frameworks
Mobile testing involves having different points of focus. Selenium WebDriver can test web view components inside a mobile app. Native mobile apps directly interact with a device’s operating system and rely on different automation solutions.
This is where frameworks like Appium and others have their significance. These frameworks act as a bridge between automation and native mobile apps, enabling you to write your test scripts, which, in turn, interact with the apps and related device functionalities.
Let us take you through some of the other additional frameworks in the market for mobile test automation.
Appium: The Universal Warrior for Mobile App Automation
According to the software, Appium is an open-source testing framework that automates native, mobile, hybrid, and web-view applications. In contrast with a far-reaching Selenium, a tool that communicates with web browsers, Appium uses WebDriver communication protocols with mobile device automation testing tools like UIAutomator in Android and XCUITest in iOS.
This means you write your test scripts using any programming language you are familiar with, be it Java, Python, or JavaScript. However, the main advantage of Appium is the possibility of interaction with native mobile elements, thus being a one-stop solution to provide comprehensive testing to organisations.
Appium provides strong supporting evidence of a compelling business case for mobile application automation and is, therefore, a good candidate for inclusion in your testing strategy. Here are some of the benefits of Appium:
- Native App Champion
Appium is dedicated to automating native mobile apps, unlike Selenium. Leveraging cutting-edge technology and user behaviour trends, this provides a dedicated solution to ensure that the application under test functions as expected and delivers an awesome user experience.
For example, you are developing a mobile app for social networking. Create automated scripts using Appium to test user registration and login, news feed functionality, and in-app purchasing on various brands with their different models. The overall time for execution is reduced, and valuable insights are gained on your app’s behaviour in most scenarios.
- Cross-Platform Compatibility
Appium is generally widely accepted as one of the most elusive in cross-platform automation, supporting technologies such as Android and iOS. That means you can create a single test script that can be run on different devices to reduce test repetition and save time. Just think about how long it would take to write different test scripts for the Android and iOS platforms.
- Open-Source and Community-Driven
Appium is open source and benefits from a thriving developer and tester community. That means continuous development, constant updates, and many online troubleshooting and learning resources.
So, if you come to a block or want to learn more about some cool Appium features, the community always has your back. In this environment of tightly-knit support, Appium thrives and continues to exist as a player in the mobile application test automation world.
Appium Considerations
While Appium offers a compelling solution for mobile app automation, there are some considerations to keep in mind:
- Learning Curve
Appium has more of a learning curve than Selenium simply because it requires you to deal with additional layers like UI Automator and XCUITest. These might be brand new territories for some testers, but many online tutorials and resources are available to minimise this knowledge gap.
- Device Management
The maintenance of a physical device lab for testing is very resource-intensive. From an organisational perspective, it means a first-time investment in the device, space, and continuous maintenance cost. Another device management approach includes integrating cloud-based platforms like LambdaTest for automation testing.
It is an AI-powered test execution platform that lets you run manual and automated tests at scale with over 3000+ real devices, browsers and OS combinations.
It provides instant, on-demand access to many real mobile devices across various operating systems and configurations through a device farm. This eliminates the need for physical device management, making the testing process easier on your part and letting you test your app on a broad spectrum of devices with minimal effort.
Appium and Cross-Device Testing
Appium is a popular tool for organization-level, cross-device test automation, enabling users to write test scripts that can run on various devices, ensuring the application runs flawlessly across a diverse user base. This is particularly useful for social media applications, where a single test script can verify user registration, login, news feed functionality, and message sending across Android and iOS devices.
This saves time and helps identify issues before they reach users. However, Appium faces competition from numerous open-source alternatives, offering varying strengths and implementations suited to specific app development needs. Despite its dominance, Appium’s value lies in its ability to script across platforms.
Platform-Specific Frameworks
Open-source platform-specific frameworks offer a powerful, straightforward, and efficient testing experience for organisations focusing solely on native app development, leveraging the most detailed development environments. Here are a few of them:
Espresso (Android)
Developed and championed by Google, Espresso is a powerhouse framework designed to automate UI interactions within Android apps. Its seamless integration with Android Studio, the primary development environment for Android apps, fosters a familiar and efficient workflow for testers.
Espresso offers a robust suite of features, including Matcher APIs for identifying UI elements, various synchronization mechanisms for handling asynchronous operations, and built-in support for writing clear and concise test cases. Espresso is an excellent open-source choice if your organization prioritizes a user-friendly testing experience within the Android development environment.
EarlGrey (iOS)
EarlGrey (iOS) Mirroring the philosophy of Espresso, EarlGrey is an open-source framework developed by Facebook to automate iOS applications. It builds on XCTest, the native framework to perform UI tests on iOS, and is designed with an easy-to-use API for scripting. EarlGrey makes test automation easier with iOS-specific features like element interaction methods, assertion libraries, and waiting features.
For an organization entirely based on iOS application development and understanding the XCTest framework, EarlGrey will be an effective open-source solution in test automation, as EarlGrey ensures testing with its current knowledge base.
Flutter Driver
Flutter Driver is an open-source tool designed for companies using Flutter to build mobile applications. It automates widget tests, allowing scripting tests to be performed directly next to the application code.
Flutter Driver follows a widget-based testing methodology, allowing the testing of a single widget to an entire Flutter application screen. This approach reduces the learning curve for developers and simplifies testing at various stages during development. It fits perfectly into the Flutter development process.
Robotium (Hybrid and Native Apps)
Robotium is an open-source framework that automates UI testing for both native and hybrid mobile applications. It supports various Android versions and offers functionalities for interacting with native UI components and hybrid applications, including web view components and accessibility features.
Its user-friendly API allows integration with open-source testing frameworks like JUnit and TestNG. Although not actively maintained, Robotium remains a valuable option for organizations seeking a single framework for both types of testing.
Calabash (Hybrid and Native Apps)
Calabash is an open-source tool that supports automated testing on Android and iOS platforms using natural language descriptions for interaction with application elements. It improves test script readability and maintainability through its DSL-based approach.
Calabash is compatible with popular open-source testing frameworks like Cucumber and has observable integration with BDD. The DSL requires an initial investment for a learning curve, but it offers powerful and expressive capabilities, especially for teams familiar with BDD.
Choosing the Right Framework For A Confident Mobile Testing Experience
Selecting the appropriate framework for mobile app automation requires a thorough understanding of your specific testing needs and the type of mobile app you are working on. Here is a detailed breakdown that should help guide you toward the most effective solution for your needs,
Native Mobile Apps
Appium is a platform-specific automation tool that supports natively mobile applications on different platforms, allowing for comprehensive interaction with native UI elements and functionalities. However, the learning curve for Appium can be more challenging due to the need for knowledge of these tools. For cross-platform testing and flexibility, Appium is a great choice.
Espresso, developed and supported by Google, is a powerful UI testing framework used for automation in Android applications. It is fully integrated into Android Studio, the main development environment for Android-based apps. For Android-focused developers, Espresso offers a user-friendly experience integrated directly into the Android development environment.
EarlGrey is an open-source, native iOS UI automation test framework that provides powerful automation for testing. It leverages XCTest, a core framework for iOS UI tests, and offers a user-friendly API for writing test scripts. For iOS-focused organisations, EarlGrey is an efficient option for iOS automation.
Hybrid Mobile Apps
Hybrid apps are a mix between native apps and web apps. They use a web view component embedded within a native app container. Considering all this, Appium is, therefore, the right framework to use for testing hybrid apps.
Since Appium has native and web view elements within a single application, using Appium WebDriver capabilities enables you to perform web view testing. In contrast, native automation tools ensure you can test native elements.
Considering Additional Factors
Other than considering the basic functionalities of the app, consider these parameters before making your choice of framework,
Team Expertise
Take stock of your team’s skills and experience with frameworks. When you choose a framework whose conventions are familiar to your team, you will greatly minimize the learning curve and start testing faster.
Community Support
A vibrant community around a framework translates to resources easily available, tutorials that can be found, and help in problem-solving. Examples include Appium and Espresso.
Testing Tool Integration
Some could be native integrations with leading test tools, reporting frameworks, or CI/CD pipelines. Understand if the integrations are critical for your testing flow.
The Future of Mobile Test Automation
The mobile app testing landscape is evolving, leading organizations to adopt a multi-framework approach. Selenium handles web-view components, while Appium handles native app elements. Cloud-based testing platforms like LambdaTest support this strategy by offering access to various devices and streamlining the testing process among different frameworks.
Conclusion
Selenium is a crucial tool in web application testing, but organizations must expand their testing capabilities. Appium is designed for native mobile apps, while Espresso and EarlGrey are platform-specific frameworks for Android and iOS.
Understanding each framework’s strengths and weaknesses, and potentially using cloud-based testing platforms, can help develop strategies for mobile app testing that ensure flawless functionality across various devices and operating systems. A well-defined testing strategy and appropriate tools can deliver high-quality mobile apps.