Appium Interview Questions And Answers

Appium Interview Questions And Answers: In this article, we have discussed Appium Interview Questions or Mobile Testing Interview Questions, a framework for automating mobile app development. Appium is an open-source automation framework for mobile apps that enables you to write code that runs on multiple devices without installing or managing any additional software. This, in turn, improves development speed and reduces the need for manual work.

In this post, we have listed Appium interview questions you might be asked during an Appium interview. We have tried to answer the most frequently asked questions about Appium in a single post so that you can prepare for your upcoming interviews.

Appium Interview Questions

• What are Sniffers?
• How do push notifications work?
• How to take crash logs from iOS and Android devices?
• How does a capacitive touch screen work?
• How do we create a device matrix?
• How do we take build from the Developer locally and use third-party application management, too?
• Describe any third-party issues you have encountered in your application.?
• What is more difficult to test on iOS, Android, or mobile devices?
• What are signed APKs?
• What is port testing?
• What are the app store guidelines for pushing any application in the respective app store?
• What is the difference between a simulator and an emulator?
• What is the difference between mobile web vs native application?
• How do Build Number and version number help with Android and iOS testing?
• Importance of Certificates in pushing applications in Play Store.
• How and When to perform Beta testing of the application for the new OS version released?
• Have you encountered any interrupting issue in your application. Explain in brief about interrupt testing.
• What are common ADB commands?
• What is the difference between the Android Version and the API version?
• How many days does it take to push the Android App and iOS apps into their respective app store?
• What is the difference between UDID and GCM? How do they help send push notifications?
• What are the features of Appium?
• Mention the advantages and disadvantages of Appium.
• Difference between Emulator and Simulator.
• When should you use a simulator and when should you use an emulator?
• What are the different types of mobile applications?
• What are some of the important mobile application tests?
• Do you need a server machine to run tests on Appium?
• What types of tests are suitable for Appium?
• What are the major advantages of using Appium on Sauce Labs rather than using Appium locally?
• Explain the general responsibilities and structure of a mobile application testing framework.
• List out the prerequisites required to run tests on an android application in Appium locally.
• What do you mean by Appium Inspector?
• Explain the architecture of Appium.
• What do you understand about end-to-end mobile testing automation? What should be kept in mind while performing it?
• What is mobile application testing and how does it differ from mobile testing?
• Explain the JSON Wire protocol used by Appium.
• Explain Appium Session in the context of Appium.
• Explain Desired Capabilities in the Context of Appium.
• Can a tester run tests in a multi-threaded environment while using Appium?
• Is it possible to use JavaScript to interact with applications while running Appium tests?
• What do you mean by Appium Package Master? How would you create a package?
• Explain how Appium works.
• Differentiate between Appium and Selendroid.
• Differentiate between Appium and Robotium.
• Differentiate between open-source tools, vendor tools and in-house tools.
• Differentiate between Appium and Calabash.
• Differentiate between Appium and Selenium.
• Do you think that automation testing can be a complete replacement for manual software testing?
• Mention the tests which you cannot do with an emulator but can do with a real device.
• What are the basic requirements for writing Appium tests?
• What are the tools used in Appium for debugging

Appium Interview Questions For 5 Years Experience

Company Name: Mobile Programming India Pvt. Ltd.
Mode Of Interview: Telephonic
Updated On: 11.11.2021

• How many applications have you been testing in the last 1 year
• On Android scroll up and scroll down to write the code
• Difference between scrollTo() and scrollExact()
• How do you detect that the device has connected to your pc
• How do you start the Appium server and command line programmatically? What is the command?
• How to inspect the elements of native Android applications
• Suppose there are 4 checkboxes are there 4 of them have the same XPath I want to click the 4th one
• @Dataprovider annotation in TestNG
• Different types of Exceptions
• The difference between the final and finally
• The difference between implicit Wait and explicit wait

Appium Interview Questions

• What is the difference between mobile Native, Web, and Hybrid apps?
• Name the language that is used to write tests in Appium. What frameworks are supported by Appium? Appium Limitation?
• What is the difference between Appium and Calabash? Prerequisites to use Appium? How do you set up Appium?
• Advantages and disadvantages of Appium?
• What is Appium inspector, and how does it work?
• How does data exchange function between your test and the App? Explain the design of the Appium.
• How can you find the DOM element or X path in the case of a mobile application?
• Name the types of errors that you can face in Appium.
• What are the most difficult scenarios that one might face while testing Appium?
• What is an Appium package master? How can you create an Appium Package?
• What is the underlying API that Appium follows?
• How can you inspect elements that are present in the Native Android App and IOS app?
• Write the command that will allow you to identify objects uniquely when there are multiple objects within the same class name using Appium.
• Mention the method by which you can scroll down in the app.
• What is the difference between an emulator and a simulator? Which approach is the best, testing on real devices or simulators/emulators?
• Limitations of using Appium?
• How to find DOM element or xPath in a mobile application
• What are the possible errors one might encounter using Appium
• What are the most difficult scenarios to test with Appium?

Appium Interview Questions For Experienced

• How to implement parallel executions with Appium?
• Explain Appiumarchitecture
• Can we use CSS in Appium
• How to automate OTP, alerts
• How to install iOS with Appium
• What are the challenges in Appium w.r.t ios and android
• How to integrate AWS with Appium
• How to get logs in Appium
• What are ADB and ADB commands
• How does iOS architecture work in Appium?

Mobile Automation Interview Questions

• What different types of applications have you worked on?
• How do you estimate mobile app testing?
• What is a signed and unsigned build?
• How do you download the build? And how do you maintain integrity?
• Are the difference you worked on and their version?
• How do you perform security testing for the mobile app?
• Emulator and simulator use?
• App extensions? Android and iOS?
• How to check if the app has been installed silently?
• How to capture device logs? Most imp
• What is the difference between mobile and web app
• What is the reason for the app crashing

Mobile App Testing Interview Questions

• Write a code to switch context from Native to Webview in Appium test automation.
• Let’s say a page has many hyperlinks/images, and I need to check the faulty links. How can I find them?
• How to integrate Selenium with Jenkins?
• How to automate notifications in Appium?
• Where would you store common files in your framework?
• Have u checked the logs while doing automation?
• What are some similar commands in Selenium and Appium?
• How would you measure screen dimensions using the click command in Appium?
• Write code to reverse a string?
• How would you check network latency in a mobile app while using Appium?
• How would you validate the response from the database using the selenium script?
• What are the different kinds of Appium frameworks you have designed?
• They may ask you about the architecture of Appium and how it interacts with Android and iOS devices.
• Difference between native and hybrid apps.
• Diff bw emulator and simulator.
• Problems faced while automating through Appium
• How to switch between two apps in appium
• How to perform parallel execution using Appium
• They can also ask to write code using TouchAction, such as swiping to the right, scrolling until they find an element, and double-clicking.
• What framework u used for appium
• How to find app activity and app package.
• Basic code to launch a calculator app.
• Difference among mobile Native, Web and Hybrid apps?
• Name the language used to write tests in Appium. What frameworks supports Appium? What is Appium’s Limitation?
• What is the difference between Appium and Calabash? What are the prerequisites for using Appium? How do you set up Appium?

Interview Questions For Mobile Testing

• Advantages and disadvantages of Appium?
• What is Appium inspector, and how does it work?
• How does data exchange function between your test and the App? Explain the design of the Appium.
• How can you find the DOM element or X path in a mobile application?
• Name the types of errors that you can face in Appium.
• What are the most difficult scenarios that one might face while testing Appium?
• What is an Appium package master? How can you create an Appium Package?
• What is the underlying API that Appium follows?
• How can you inspect elements that are present in the Native Android App and IOS app?
• Write the command that will allow you to identify objects uniquely when there are multiple objects within the same class name using Appium.
• Mention the method by which you can scroll down in the app.
• What is the difference between an emulator and a simulator? Which approach is the best, testing on real devices or simulators/emulators?
• How to get the log from the Web server
• Then how to get the log from the mobile phone
• Limitations of using Appium?
• How to find DOM element or xPath in a mobile application
• What are the possible errors one might encounter using Appium
• What are the most difficult scenarios to test with Appium?

Appium Mobile Testing Interview Questions

• Appium Architecture
• Real device steps and tools required
• how do you find the element Appium?
• how do you scroll in Appium?
• What is UIAutomator2?
• How to locate Appium locators using Appium and UIautomator2(for Android and iOS)
• What is adb?
• Appium (web view, context view)
• Appium – native methods, uiautomatorviewer, Appium inspector, logs, command line
• Appium for iOS, Android
• How to start Appium, ios command
• iOS setup documentation.
• Screenshot syntax and saving

Appium Mobile Automation Testing Interview Questions

What is Appium?
Ans: It is an open-source, cross-platform test automation tool for native, hybrid, and mobile web apps. It can be tested on simulators(iOS, FirefoxOS), emulators(Android), and real devices(iOS, Android, FirefoxOS). 

Why Appium?

• It is a free, open-source test automation framework for mobile testing.
• We can automate Android Applications as well as iOS Applications, i.e., it is a “Cross-Platform” automation tool
• It is an extension to selenium (If the people who already know selenium can quickly get the things and start working).
• It supports multiple platforms, i.e., Android, iOS, FirefoxOS
• It supports various languages with Selenium Webdriver API, i.e., Java, PHP, Python, Ruby, C#, etc.
• We can use any testing framework.
• If we use Apple’s UIAutomation library without Appium, we can only write tests using JavaScript and run tests through the Instruments application. Similarly, with Google’s UI Automator, we can only write tests in Java. Appium opens up the possibility of true cross-platform native mobile automation.

Which language is used to write tests in Appium?
Ans: We can write our Appium tests in any language because Appium is nothing more than an HttpServer. The most common languages and development frameworks are C#.net, Java, Ruby, Python, and Javascript.

What are the prerequisites to use Appium?
Ans: Below is the list of pre-requisites to start mobile automation:

• Android SDK
• Eclipse IDE
• Java Development Kit(JDK)
• Selenium Server Jars
• WebDriver language binding library
• TestNG
• Appium for Windows
• APK app info on Google Play
• JavaScript

What underlying API does Appium follow?
Ans: Appium uses the underlying Selenium API to automate Test Cases. It is an extension of Selenium because all the Selenium APIs are present in Appium, too.

What are the Desired Capabilities?
Ans: Desired capabilities are a set of keys and values (i.e., a map or hash) sent by the client to the server to tell the server what kind of automation session we are interested in.

How would you inspect elements of the Native Android App?
Ans: Using the UIAutomator tool in the Android SDK, we can access the object locators of Android Native Apps.

How will you scroll down in the App?
Ans: We can scroll down in the app using the scrollTo() method. This method will scroll automatically until the specific text does not match.

Can you start Appium Server programmatically?
Ans: Yes, we can start the Appium Server programmatically. The commands we enter to the command prompt we write in a notepad and save with .bat extension and click bat file.

Runtime.getRuntime().exec(“cmd /c start C:\\appiumstart.bat”);

How would you inspect elements on iOS Apps?
Ans: By using Appium Inspector, which is a GUI-based tool similar to Selenium IDE, we can identify the objects.

How would you identify Mobile Browser objects?
Ans: We can identify objects in a Mobile Browser by using UserAgent. We change your browser as the mobile proxy and get a purpose.

Or, we can identify objects in a Mobile Browser by using ChromeCasting. We connect your mobile to the system and inspect objects on the mobile from the system using ChromeCasting.

How would you identify the object uniquely when there are multiple objects with the same class name using Appium?
Ans: We will use driver.findElements(By.className) to take the list and get through the index. Using the list mechanism and findElements method, we will traverse through the indexes and handle the object uniquely with the class name.

What are the Limitations of Appium?

• Appium doesn’t support testing of an Andriod version which is lower than 4.2
• It has no support to run Appium Inspector on Microsoft Windows
• It has limited support for Hybrid App testing

What is the difference between Emulator and Simulator?
Ans: The emulator is used to call Android virtual devices, which we use on our PC on a Windows machine, and the Simulator is used to call iOS virtual devices, which will launch from Xcode on a MAC.

How do you detect the device got connected to the PC?
Ans: By using the command ADB devices, we can find out whether the PC has detected any objects or devices.

Will Appium work for Mobile Browser Automation?
Ans: Yes, we can use Appium to work on Mobile Browsers also.

What are Native Apps?
Ans: Native Apps or Applications are those written by using the Android or iOS SDK’s

What are Mobile Web Apps?
Ans: Mobile Web Applications are those which are accessed using a Mobile Browser.

What test frameworks are supported by Appium?
Ans: Appium does not support test frameworks because there is no need to support them; we can use Appium with all test frameworks, whichever we want, like NUnit, etc.

What are the basic requirements for writing the Appium tests?

• We require a driver client to write Appium tests. It drives mobile applications as a user. Using the client library, we write Appium tests that wrap up our test steps and send them to the Appium server over HTTP.
• We need to initialize a session first, as an Appium takes place during the session. Once the automation is done for one session, it can be ended and waited for by other sessions.
• To initialize an Appium session, we need to define certain parameters, known as desired capabilities, like platform name, platform version, device name, and so on.
• By using a large and expressive vocabulary of driver commands, we can write our tests.

What are Hybrid Apps?
Ans: Hybrid apps are those that have a wrapper around a web view and a native control that interacts with web content.

What is the difference between Hybrid Apps and Native Apps?
Ans: Hybrid apps are web-based apps that work well on the mobile browser, whereas Native apps are written for a particular OS, i.e., Android, iOS, etc.…

What is the Appium Inspector?
Ans: Appium Inspector is similar to Selenium IDE. It is a recording and playback tool. It records and plays native application behaviour by inspecting DOM(Documentation Object Model). By DOM Inspection, it generates test scripts in any desired language. Appium uses the UIAutomator viewer in its options as It does not support Windows.

Does Appium support Emulators in iOS?
Ans: No, Appium doesn’t support Emulators in iOS.

Explain the design of the Appium.
Ans: Appium is an HTTP server that is written by using the node js platform and drivers. It drives Android and iOS sessions by using webdriver JSON wire protocol. A server is a setup on our machine which exposes REST API when Appium is downloaded and installed. Appium receives command and connection requests from the client and executes those commands on mobile devices.

Mobile test automation frameworks are Apple instruments for iOS, Google UI Automator for Android API, and Selendroid for Android API level 15 or less.

Can Appium run on Windows to test the iOS app?
Ans: No, Appium will not be able to test iOS apps on the Windows server, which is hosted locally, because Appium relies on OS X-only libraries to support iOS testing.

What kind of platforms are supported by Appium?
Ans: Appium supports platforms like:

• Android
• Firefox mobile OS
• iOS

What kind of applications can we automate using Appium?
Ans: We can automate applications using Appium

• Mobile Web Browser
• Hybrid Applications
• Native Applications

What is the default port number used for the Appium Server?
Ans: 4723 is the default port number used for the Appium Server.

To perform app automation, can we use JavaScript in Appium?
Ans: Yes, we can use JavaScript to automate applications using Appium. Whatever language that supports HTTP requests can be used with Appium.

Name the list of Appium Client Libraries.
Ans: Ruby, Java, Python, PHP, and C# are the Appium client libraries used for the extension WebDriver protocol.

Do you need an app .apk in Android to automate using Appium, or do you also need the app in your workspace?
Ans: We need the only .apk file to automate using Appium in Android.

Can we run our tests in a multithreaded environment while using Appium?
Ans: Yes, we can run our test in a multithreaded environment while using Appium, but we must ensure that we do not run more than one test at the same time against the same Appium server.

How do we find the DOM element in a mobile application?
Ans: By using “UIAutomateviewer,” we can able to find the DOM element in a mobile application.

Does Appium have the same approach as WebDriver?
Ans: Yes, Appium has the same approach as WebDriver.

More Interview Questions: Testing Interview Questions

What are the advantages of Appium?

• Appium supports multiple programming languages
• It is an open-source tool
• It supports iOS and Android platforms, and it drives iOS and Android Apps using WebDriver protocol.
• Appium can automate Mobile Web Browser, Hybrid Applications, and Native Applications
• It supports multiple frameworks
• It is a cross-platform automation tool
• It supports Selenium and JSON wire protocol

What are the disadvantages of Appium?

• Appium does not support testing of Android versions lower than 4.1
• Doesn’t support Image Comparison

Is a server node required to execute Appium tests?
Ans: No, we don’t need a server node to execute Appium tests.

What are the basic selenium commands to use with an Appium?

• Managing Alert boxes
• Elements locate commands by using the class name, ID
• Text commands like type(). Syntax: wdBacked.type(locator,value);

What is the difference between the Find Element and Find Elements methods in selenium?

• Find Element means to Capture a Single WebElement
• Find Elements means to Capture Multiple WebElements from the List of Webelement

What is the command used to start and stop the Appium service?
Ans: Once we are done with tests such as ‘appiumservice.start()’ and ‘appiumservice.stop(),’ we can start Appium and stop the Appium service. With the help of ‘buildDefaultService(),’ we can easily start and stop the Appium service.

What are the steps to configure and run Mobile Automation Test cases using Appium?

• Download Java and set Java_Home in environmental variables.
• Download Android Studio.
• Check the Android installation path in the machine
• Set Android_Home Environmental variables path to SDK location and include bin folder paths in the PATH variable
• Open Android Studio and configure Virtual device/Emulator
• Open Emulator and check whether it is working
• Download Node.js
• Set Node_Home Environmental variables path
• Set npm Environmental variables path
• Download Appium Server from Node
• Download the Appium Java client library
• Install Eclipse Create a Project in Eclipse and configure Appium libraries
• Start Appium Server

Difference between Selenium and Appium?
Ans: Selenium is an open-source tool that allows the automation of the elements of Web Applications as well as Mobile Applications, whereas Appium is also an open-source tool to test the web applications which run on mobile browsers.

How will we run parallel iOS tests in Appium?
Ans: By using Sauce Labs, we can run iOS tests parallel, we need to upload our Appium test to sauce labs, and it will run as many iOS tests parallel.

What are the advantages of using Appium over Sauce Labs?

• You don’t have to install/configure the mobile emulators/simulators in your local environment.
• Modifications to the source code of the application are not required.
• You can start scaling your tests instantly.
• Setup time for the Appium server locally is reduced.

Can we able to test iOS applications on a Linux machine using Appium?
Ans: No, we won’t be able to test iOS applications on Linux machines by using Appium.

What is an Xcode in Appium?
Ans: Xcode is an integrated development environment for OS X and iOS.

Does Appium support the ‘C’ language?
Ans: No, Appium doesn’t support the ‘C’ language.

What is POM, and what is the basic use of POM?
Ans: POM is an XML file that is used for configuring the project in MAVEN.

How will we inspect elements using the Appium?
Ans: By using the uiautomatorviewer and Appium Inspector, we can inspect elements in Appium.

What is the Full form of the APK extension?
Ans: APK stands for Android Application Package File.

What tools can be used for debugging Android?
Ans: The Android Monitor.bat tool is used to debug Android.

How can we test screen sizes for different devices?
Ans: By using Emulators, we can test different devices on screen sizes.

What is the extension used for Android files?
Ans: .apk(Android application package) is used for Android files.

What is the extension used for iOS files?
Ans: .ipa(iOS App Store Package) is used for iOS files.

Which is the most complex task to perform using Appium?
Ans: The data exchange part is a complex task to perform using Appium.

What are the possible errors you might encounter while using Appium?

• Fail to start an Appium session
• Nothing happens when Clicking on the Inspector icon

What tools can be used for debugging iOS?
Ans: The iPhone Configuration Utility tool is used for debugging on iOS

If you find any interview question that is not covered in the list, please comment in this blog post, so that I can update this list