User interface or UI testing may include straightforward ‘smoke tests’ to intricate end-to-end email sign-up verifications. Testers or QA engineers are required to carry out UI tests as quickly and inconsistently as they can. Hence, this is where test automation does wonders; allowing you to reliably test using a software framework. In this article, you will find out the value of UI test automation and suggestions regarding the top testing frameworks for Android applications.

MailSlurp is compatible with any testing framework and is a great API for the automation of email and SMS testing.

Android UI Testing: what is it?

An efficient UI is essential for Android Applications. Test a UI beforehand to prevent later issues. Otherwise, your application may crash, display false information, or direct users to the wrong locations. UI testing looks for bugs and clears them to give users a bug-free time.

Automated Testing versus Manual Testing for Android

Human assessment is essential when it is about examining design components, colors, or user experience (UX), where a software program fails to provide feedback. Real people can comprehend whether the UI complies with the standards. You may use a test automation framework for different checks including button pressing and form completions. Automated Android UI testing, when done using a computer, shows minimal anomalies across test runs. Remove user variety and error detect bugs in your program.

With the same QA team, you may even grow the number of features of your Android app. It also frees QA engineers to develop new scripts or execute any necessary manual testing. Signups or password resets through email, however, are difficult to test. Manual testing was an option until tools like MailSlurp were made available to execute automated testing via API.

Choosing the top frameworks for Automated Android UI Testing

There are two essential criteria to determine the top frameworks for Automated Android UI Testing. First, it must be actively maintained by the developer. Next, it should be completely free to use and download, with no additional fee to gain access. Here are our top three picks for Android UI testing:

Espresso or UIAutomator 2

Focusing on Android, Espresso is a framework for automated UI testing for android apps by Google. It does not support operating systems like iOS. Similarly, UIAutomator 2 tests user interfaces and enables interaction with multiple applications such as Settings. Both testing frameworks complement each other and may be combined in a single test file.


Detox is another automated testing framework that allows users to do end-to-end testing on their phones. It may work with an Android emulator or a phone connected to the computer. Above all, it is frequently updated to add features and resolve additional issues every time.


Appium runs tests on both Android and iOS devices by employing the same test code for both. It implements cross-platform support by converting Appium test orders into equivalents for mobile-specific devices, both Android, and iOS.

Test Project

Made for point-and-click style testing, Test Project features a Recorder as the key element. Worth-mentioning Android UI Testing Frameworks Although they don’t fit the criteria, you may use the following too:


Calabash, by Microsoft, is perfect for both Android and iOS UI Test automation.


Robotium is devoted to Android Applications only.

Which Framework is Ideal for Test Automation?

Although the choice is scattered, there has to be one framework on the list to best serve your needs. For instance, Use Espresso or UIAutomator2 if you don't plan to produce an iOS counterpart. For both Android and iOS, opt for Appium. Detox is the best if you want updated features often.

MailSlurp lets you Automate Email Signups and More!

MailSlurp’s API gives you email addresses and phone numbers. Using any of the frameworks, make sure your app is acting per your needs through the MailSlurp.