Learning_Selenium

~ Learning Selenium with Java ~

Description

I love learning new things but I can't help forgetting some. This is why I do this short summaries in a 'cheatsheet' like manner, to be able to keep all important details in one place.

NOTE

While learning about Selenium, I have found "Selenium WebDriver with Java - Basics to Advanced" Course on Udemy to be very useful. Check it out!

README Contents

#	Name	About	Link
1	Debian Install	Installation Guide for Debian	Install Guide
2	Quick Start	Starts a chrome windows and gets the title	Quick Start
3	Xpath + CSS (with/out RegEx)	Write and read XPath, CSS	Xpath and CSS
4	Absolute/ relative paths	sibling, parent, /selector...	Paths
5	Static/Dynamic Dropdowns	selectby..., automatisation	Dropdowns

Debian Install

• I have found the following steps here

Steps:

• insert the following code into a .sh file (using an editor of your choice), change its permission so that the file cand be run and simply ./ it with sudo.

#!/usr/bin/env bash
# https://developers.supportbee.com/blog/setting-up-cucumber-to-run-with-Chrome-on-Linux/
# https://gist.github.com/curtismcmullan/7be1a8c1c841a9d8db2c
# http://stackoverflow.com/questions/10792403/how-do-i-get-chrome-working-with-selenium-using-php-webdriver
# http://stackoverflow.com/questions/26133486/how-to-specify-binary-path-for-remote-chromedriver-in-codeception
# http://stackoverflow.com/questions/40262682/how-to-run-selenium-3-x-with-chrome-driver-through-terminal
# http://askubuntu.com/questions/760085/how-do-you-install-google-chrome-on-ubuntu-16-04

# Versions
CHROME_DRIVER_VERSION=`curl -sS chromedriver.storage.googleapis.com/LATEST_RELEASE`
SELENIUM_STANDALONE_VERSION=3.4.0
SELENIUM_SUBDIR=$(echo "$SELENIUM_STANDALONE_VERSION" | cut -d"." -f-2)

# Remove existing downloads and binaries so we can start from scratch.
sudo apt-get remove google-chrome-stable
rm ~/selenium-server-standalone-*.jar
rm ~/chromedriver_linux64.zip
sudo rm /usr/local/bin/chromedriver
sudo rm /usr/local/bin/selenium-server-standalone.jar

# Install dependencies.
sudo apt-get update
sudo apt-get install -y unzip openjdk-8-jre-headless xvfb libxi6 libgconf-2-4

# Install Chrome.
sudo curl -sS -o - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add
sudo echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list
sudo apt-get -y update
sudo apt-get -y install google-chrome-stable

# Install ChromeDriver.
wget -N http://chromedriver.storage.googleapis.com/$CHROME_DRIVER_VERSION/chromedriver_linux64.zip -P ~/
unzip ~/chromedriver_linux64.zip -d ~/
rm ~/chromedriver_linux64.zip
sudo mv -f ~/chromedriver /usr/local/bin/chromedriver
sudo chown root:root /usr/local/bin/chromedriver
sudo chmod 0755 /usr/local/bin/chromedriver

# Install Selenium.
wget -N http://selenium-release.storage.googleapis.com/$SELENIUM_SUBDIR/selenium-server-standalone-$SELENIUM_STANDALONE_VERSION.jar -P ~/
sudo mv -f ~/selenium-server-standalone-$SELENIUM_STANDALONE_VERSION.jar /usr/local/bin/selenium-server-standalone.jar
sudo chown root:root /usr/local/bin/selenium-server-standalone.jar
sudo chmod 0755 /usr/local/bin/selenium-server-standalone.jar

Notes

• chromedriver is here: '/usr/local/bin/chromedriver'
• selenium files are here: '/usr/local/bin/selenium-server-standalone.jar'

Quick Start For chromedriver

• in the chosen java IDE (ex. eclipse, NetBeans, etc. ) do:
  • create a new project
  • create a new class
  • click on Project->Properties->Java Build Path->Libraries->Add External JARs and select the file at '/usr/local/bin/selenium-server-standalone.jar'
  • insert the following code in the created class

package <package_name>;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;


public class <class_name>{

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		//selenium code		

		System.setProperty("webdriver.chrome.driver", "/usr/local/bin/chromedriver"); //
		ChromeOptions options = new ChromeOptions();
//		options.addArguments("--no-sandbox");//if error -> uncomment this (bug workaround)
		
		// ChromeDriver
		WebDriver driver = new ChromeDriver(options);
		driver.get("http://google.com");

		// Write testing code here:

		driver.close();// closes current window
		//or
		//driver.quit();//closes all chrome windows opened by selenium

	}

Notes

• change <package_name> and <class_name> to match your name of the project and your name of the class respectively

Xpath and CSS

XPath

Syntax:

"//tagName[@attribute='value']"
"//tagName[@contains(@attribute,'value')]" //Regular Expression 

• to check if XPath for the element is ok, use the JavaScript console ( CTRL+Shift+C -> Console) and write the following:

$x("<XPath>")

CSS

Syntax:

"tagname[attribute='value']"
"tagName[Attribute*='value']"// RegEx
"#id" //works for ids
".class" //works for classes NOTE that "." replaces " " in class names

Absolute/Relative paths

Relative

• depends on the position and existence of a chosen element

Syntax (XPath):

"//tagName[@attribute='value']/following-sibling::selector" //for a relative sibling
"//tagName[@attribute='value']/parent::selector" // used to grab the parent
"//tagName[@attribute='value']/selector" // used to grab a child of the chosen element

Absolute

• doesn't depend on the position and existence of other elements

Dropdowns

-there are: - static dropdowns - dynamic dropdowns Syntax:

import org.openqa.selenium.support.ui.Select;
Select s = new Select(<webdriver_element>); //webdriver element can be found by id, class, xpath, css selector etc.
					    // s will be the dropdown object with certain methods(selectby...)