Apium Interview Questions for Freshers

Best Apium Interview Questions 

What Are The Advantages Of Using Appium?

It allows you to write tests against multiple mobile platforms using the same API.
You can write and run your tests using any language or test framework.
It is an open-source tool that you can easily contribute to.

What Is Appium’s Strongest Point?

Appium is based on Selenium which is an HTTP protocol by Google designed to automate browsers. The idea is actually very nice as automating an app (especially a webview-based one) is not so different (in terms of required APIs) from automating a browser.

Appium is also designed to encourage a 2-tier architecture: a machine runs the test written in one language ([csharp], [ruby], [javascript] are only a few among the many supported ones) and another one (the test server) actually executes it.

Furthermore the WebDriver protocol targets scalability (because based on HTTP), this makes Appium very scalable as well; remember that you will need to write your test once, Appium will be in charge of executing it on more platforms.

What Is The Appium Philosophy?

R1.

Test the same app you submit to the marketplace

R2.

Write your tests in any language, using any framework

R3.

Use a standard automation specification and API

R4.

Build a large and thriving open-source community effort

Why Do The Appium Clients Exist?

We have the Appium clients for 3 reasons:

1) There wasn’t time to go through a full commit and release cycle for Selenium once we’d set a release date for 1.0

2) Some of the things that Appium does, and which its users really find useful, are never going to be an official part of the new mobile spec. We want a way to make these extensions available

3) There are some behaviors whose state is as yet unknown. They might make it into the spec and get deleted from the clients, or they might be in category #2

Ultimately, the only reason for the clients will be #2. And even that is actually evidence that we are conforming to the WebDriver spec (by implementing the extension strategy it recommends) rather than departing from it. The Appium clients are the easiest and cleanest way to use Appium.

Explain What Is Appium?

Appium is a freely distributed open source mobile application UI testing framework.

What Are Main Advantages Of Using Appium On Sauce Labs?

You save the time it takes to set up the Appium server locally.
You don’t have to install/configure the mobile emulators/simulators in your local environment.
You don’t have to make any modifications to the source code of your application.
You can start scaling your tests instantly.

Which Language Should I Use To Write My Tests?

This is probably the best thing about Appium: you can write your tests in any language. Since Appium is nothing more than an HTTP server, a test which needs to be interfaced with Appium can simply use HTTP libraries to create HTTP sessions. You just need to know the Selenium protocol in order to compose the right commands and that’s it!

However, as you can imagine, there are already some libraries doing this for the most common languages and development frameworks out there: C#, [dotnet], [java], Ruby, [python] and Javascript are just few examples; and they all are open source projects.

What Type Of Tests Are Suitable For Appium?

When it comes to testing, especially webview-based apps, there are a lot of scenarios that can be tested also depending on the feature coverage you want to ensure. Appium is pretty handy for testing scenarios that users will go through when using your app.

But if you need to test more than UX simple interactions, then Appium will become a limitation. Think about features like keyboarding. It is not so easy when complex touch/keyboard mixed scenarios are involved, the probability of a false failure is high; do not misunderstand me on this: I am not saying it is impossible to do, just not so easy as you might think!

Another little nightmare with Appium is exchanging data. When your test needs to exchange data with your app (especially in the incoming direction), you will need to play some tricks. So always consider that sending and receiving information is not that straightforward. It is not Appium’s fault, the WebDriver specification was designed for automating stuff, not exchanging data!

List Out The Appium Abilities?

Appium abilities are:

Test Web
Provides cross-platform for Native and Hybrid mobile automation
Support JSON wire protocol
It does not require recompilation of App
Support automation test on physical device as well as similar or emulator both
It has no dependency on mobile device.

List Out The Pre-requisite To Use Appium?

Pre-requisite to use APPIUM is:

ANDROID SDK
JDK
TestNG
Eclipse
Selenium Server JAR
Webdriver Language Binding Library
APPIUM for Windows
APK App Info On Google Play
Js

What About Performance?

Appium is not a huge application and requires very little memory. Its architecture is actually pretty simple and light as Appium acts like a proxy between your test machine and each platform automation toolkit. Once up and running, Appium will listen to HTTP requests from your tests; when a new session is created, a component in Appium’s Node.js code called _proxy_ will forward these Selenium commands to active platform drivers.

In the case of Android for example, Appium will forward incoming commands to the [chromedriver] (90% of cases, Appium will not even change commands while routing them), this happens because ChromeDriver supports WebDriver and Selenium. For this reason Appium will not allocate much memory itself, you will see a lot of memory being allocated by other processes like [adb], ChromeDriver or the iOS automation toolkit (called by Appium while testing and automating).

What Platforms Are Supported?

Appium currently supports Android and iOS, no support for Windows unfortunately.