Skip to main content

Appium Architecture

Back to Appium Tutorial Index

 Appium is an HTTP server which is written in Node.js and exposes REST API. It creates and handles multiple WebDriver sessions. It receives connections from a client, listens for commands, executes those commands on a mobile device, and responds with an HTTP response. It is same as the Selenium server, where in selenium server gets HTTP requests from Selenium client libraries.
Like selenium tests, appium tests are also written once and can be run on multiple devices (well almost). This primarily entails four entities -

  • Tests, written in one of the appium supported languages
  • Appium server (also known as test server), which interacts with device (or emulator) running the test
  • Device (or emulator) to run tests on
  • Machine from where tests are run

This could be visualized from following Appium Architecture Image
Herein one machine can be used to run both appium server and test. In Appium video tutorial we would be running appium server on the same machine on which tests are executed. Test code performs HTTP calls to server which then translates those commands into device specific actions sent to device.  These commands are user interactions to the device for ex - clicking on button, swiping the screen, scrolling in to area etc
Labels:

Popular posts from this blog

Appium and android mobile app automation

Next appium and Android mobile app automation video tutoria l is live. If you are new to appium then please check - appium-tutorial This video tutorial covers - Start vysor (Just for this session and not mobile automation :)) Start appium and start appium inspector Desired Capabilities platformName - Android deviceName - L2N0219828001013 (as seen on "adb devices") Saved Capability Sets Start Session Scan app elements using appium inspector Get appPackage and appActivity using "APK info" app Install "APK info" app and open app whose appPackage and appActivity are required i.e. calculator Check top section of app icon com.android.calculator2 is app package com.android.calculator2.Calculator is app activity testng.xml file settings for running Android app tests Test details com.seleniumtests.tests.mobile.AndroidAppTest and CalculatorScreen class View beautiful STF test report  
Post a Comment
Read more

Return only first or last element from webelements collection

Note: If you are new to java and selenium then start with selenium java training videos .     We often come across situation when there are multiple elements on a page and we probably like to exercise only a few of them using selenium webdriver. May be just first and last element. For example on a search result page we may like to click on only first and last link and not all. This is when Iterables API comes handy. (By the way I am assuming that you have already completed watching selenium training videos :)). Once we have collection of web element then we can use Iterables to get only first or last element as following - Consider that we fetch collection of element as - List< WebElement > webElements = getDriver().findElements(By. id ( "htmlID" ));   Now we can get the first web element from this collection as -  WebElement firstElement = Iterables. getFirst (webElements,  getDriver().findElement(By. id ( "defaultElement" )));   Herein second
2 comments
Read more

Using chrome console to test xPath and css selectors

Note: If you are new to java and selenium then start with selenium java training videos .       Since the advent of selenium there have been many plugin to test xPath / css selectors but you don’t need any of them if you have chrome browser. Using Chrome console you can test both xPath and css selectors. Launch website to be tested in chrome browser and hit F-12 and you would see chrome console opened in lower pane of application - Hit escape key and console would open another pane to write element locators - And now you can start writing xPath or css selectors in chrome console and test them - The syntax for writing css id - $$(“ ”) And hit the enter key. If your expression is right then html snippet of the application element corresponding to the css selector would be displayed - If you mouse over the html snippet in chrome console then it would highlight the corresponding element in application - If you want to clean console of previously wri
Read more