Selenium Python browser call: Pseudo browser

Webdriver Drive Introduction

Because the mobile side of the driver is not currently in contact, so the main introduction of PC end DRIVER,PC end of the driver are browser-based, mainly divided into 2 types:

• One is the real browser Driver:safari, Firefox, ie, Chrome, etc.

For example: Safari, Firefox, ie, Chrome are all through the browser native components to invoke the browser's native API, these driver are directly launched and by invoking the browser's underlying interface to drive the browser, so with the most realistic user scene simulation, Used primarily for web compatibility testing.

• One is pseudo browser driver:htmlunit, PHANTOMJS

Selenium supported pseudo-browsers include Htmlunit, PHANTOMJS; they are not really running in the browser, there is no GUI, but with the support of HTML, JS and other parsing capabilities of the class browser program;

These programs do not render the display of the page, but support the search for page elements, JS execution, and so on, because no CSS and GUI rendering, so the efficiency will be much faster than the real browser, mainly used in functional testing above.

Driven	Description
Firefox Driver	Included in the Selenium (Webdriver) package for each language, which is why you can use Firefox to launch scripts directly after installing selenium.
Chrome Driver	Need to download Chromedriver, because Webdriver was originally Google's project, and then merged with selenium, so the support for Chrome is also very good
IE Driver	Need to download iedriverserver.
Opera Driver	To download Operadriver,operadriver is webdriver maker Opera Software and volunteers developed the Webdriver implementation for opera
Htmlunit Driver	Htmlunit is the Java implementation of the class browser program, it will return the document simulation into HTML, so as to simulate the browser run, but not really to start a browser to execute the script contained in the selenium server, without driver, direct instantiation can
Phantomjs Driver	PHANTOMJS is an interface-free WebKit with JavaScript APIs that can be viewed as a browser with no interface. PHANTOMJS is a standalone browser app for third parties that can support HTML, JS, CSS, and other execution
Appium	Appium can be viewed as a mobile selenium, and it also supports automated testing of multiple platforms (IOS, Android, and Firefoxos) for apps and mobile web

The following main introduction of the two pseudo-browser simple call method and comparison, followed by a separate description of Firefox and IE browser calls detailed content and various problem solving methods.

Htmlunit Call

Htmlunit Official website: http://htmlunit.sourceforge.net/

This article uses the local API to view the address to test, can refer to: The previous Selenium Python browser call: Firefox article " How to view the Python Selenium API to open the address

Method One:

#Coding=utf-8 fromSeleniumImportWebdriver fromTimeImportCTime fromTimeImportSleep fromSelenium.webdriver.common.desired_capabilitiesImportdesiredcapabilitiesPrintCTime () driver=webdriver. Remote (command_executor="Http://127.0.0.1:5555/wd/hub", desired_capabilities=desiredcapabilities.htmlunit) Driver.get ("http://127.0.0.1:4567") Driver.find_element_by_partial_link_text ("Selenium"). Click ()PrintDriver.titlePrintDriver.current_urlPrintDriver.namePrintCTime () driver.close ( )

Method Two:

#Coding=utf-8 fromSeleniumImportWebdriver fromTimeImportCTime fromTimeImportSleepPrintCTime () driver=Webdriver. Remote (Command_executor='Http://127.0.0.1:5555/wd/hub', Desired_capabilities={'Platform':' any','Browsername':'Htmlunit','version':"','javascriptenabled': True}) Driver.get ("http://127.0.0.1:4567") Driver.find_element_by_partial_link_text ("Selenium"). Click ()PrintDriver.titlePrintDriver.current_urlPrintDriver.namePrintCTime () driver.close ( )

The results are as follows, because the test process has no interface, so the print time, and the page title and URL to determine the execution result:

Wed Oct 17:29:22 2015python:package seleniumhttp://127.0.0.1:4567/selenium.htmlhtmlunitwed Oct 14 17:29:22 2015

You need to start selenium server before running, the startup method is as follows:

1. C:\users\admin>java-jar Selenium-server-standalone-2.45.0.jar-role Hub

2, C:\users\admin>java-jar Selenium-server-standalone-2.45.0.jar node-port 5555-hub Http://127.0.0.1:4444/grid/ Register

PHANTOMJS Call

PHANTOMJS Official website: http://phantomjs.org/

Before making phantomjs, you need to download it first. PHANTOMJS support Windwos, MAC, Linux and other platforms, we can choose the appropriate version according to their own environment to download, download complete decompression will have to phantomjs-2.0.0-windows directory, in the bin The directory will see the Phantomjs.exe program, adding the current directory to the system environment variable path. (or drop the phantomjs.exe directly into the Python installation directory, because we've initially added Python to the system environment variable's path).

The following can be tested using the PHANTOMJS driver.

#Coding=utf-8 fromSeleniumImportWebdriver fromTimeImportCTime fromTimeImportSleepPrintCTime () driver=webdriver. PHANTOMJS (executable_path="C:\\python27\\phantomjs.exe") Driver.get ("http://127.0.0.1:4567") Driver.find_element_by_partial_link_text ("Selenium"). Click ()PrintDriver.titlePrintDriver.current_urlPrintDriver.namedriver.get_screenshot_as_file ("c:\\photo.jpg")PrintCTime () driver.close ( )

The result of the operation is as follows, and the captured picture can be seen in the C-drive, which matches the actual operating interface:

Wed Oct 17:29:50python:package seleniumhttp://127.0.0.1:4567/14 17:29:53 2015

Browser comparison

The following runs the same script in Htmlunit, Phantomjs, and Firefox (using the demo script Htmlunit above)

The time of the three is: htmlunit:0s,phantomjs:3s,firefox:8s

Here's a comparison of the pros and cons of each browser:

Drive type	Advantages	Disadvantages	Application
Real-World Browser drivers	Real-world simulation of user behavior	Low operating efficiency and stability	The Web Compatibility test uses
Htmlunit	Fast running speed	JS engine non-mainstream browser support	Page test with a small number of JS
Phantomjs	Fast running, simulated behavior close to the real browser	Cannot impersonate a specific browser behavior	Functional testing of non-GUI

Resources

[1],selenium Webdriver's various driver,

http://blog.csdn.net/five3/article/details/19085303

Selenium Python browser call: Pseudo browser