Transcript Selenium 2 Introduction

AUTOMATING WITH SELENIUM 2
and the PageObject Design Model
SELENIUM
YOU CAN’T BE GOOD AT EVERYTHING
 How
Selenium Remote Control works
 You
launch a server on your test machine.
 Your tests connect to that server via IP.
 The server launches a browser, with selenium CORE
embedded as javascript into the page.
 Selenium CORE simulates user actions with javascript.
THE JAVASCRIPT SANDBOX
THE GOOD
 Doesn’t
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steal your
mouse/keyboard.
Works with any browser that
uses javascript
Works for any OS that
supports java.
Very fast page interactions.
Large API
Supports a variety of
programming languages.
Can be run on remote
machines
THE BAD
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Can’t see anything outside
the page object.
Not all browsers support all
functionality.
Some pages aren’t
automatable.
Can’t see inside third party
apps
XSS Limitations
WEBDRIVER INTRODUCTION
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A different way of automating the browser.
Create a browser-specific driver to control the browser
directly.
 Have to do this for each browser!
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Object oriented API
 Doesn’t need a real browser
 No javascript limitations
 No need for a server.
 Isn’t as delicate as selenium.
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SELENIUM 2
Went into Beta Dec 24th.
 WebDriver + Selenium
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 The
two projects have merged (literally) into
Selenium 2.0
 Large browser support and no javascript limitations.
 No server
 The old API’s are still available.
 New API’s are becoming available.
AUTOMATING WITH SELENIUM 2
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You have 2 options:
 IWebDriver
 This
is just the WebDriver api
 Doesn’t support a lot of browsers.
 Will need to change all your tests.
 WebDriverBackedSelenium
 Uses
the old Selenium 1 API
 But uses WebDriver to run things if possible
 Can use selenium 1 if the browser isn’t supported.
THE WEBDRIVER API
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Object Oriented
Doesn’t break nearly as often
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Handles pageloads automatically
Fewer problems automating
Somewhat more complicated API
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selenium.type(“password”,”thisIsMyPassword”);
driver.findElement(By.id("password")).sendKeys(“thisIsMyPassword");
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By.Id, By.Xpath, By.Name, By.ClassName, By.PartialLinkText
All the supported browsers work really well
Can extend the API to add custom functionality.
Works well with a Page Object design model.
PAGE OBJECT DESIGN PATTERN
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Adds a layer of abstraction into your code.
Helps to organize your code once it grows large.
All automation is automatically reusable and shareable.
A way to separate tests from re-usable functions.
A way to store information about how the system works.
A way to specify what page functions start on, and what page they end on.
A way to programmatically break your tests when functionality changes.
Makes code maintenance easier.
There is even a PageFactory class available to automatically create them.
HOW DOES IT WORK?
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Each page is defined as it’s own class.
Actions (including navigation) are represented as functions for a class.
Each function returns a new Page object, signifying what page the actions stops
on.
Your tests “know” what page you are on, and will only give you access to
functions available to that class.
Tests only talk to the page objects.
Page objects only talk to the driver.
Elements on the page are stored as variables for the page object.
Automatic page validations can be stored in the constructor for each page
object.
Tests become a string of well defined functions, not meaningless gibberish.
Tests can be grouped by namespace.
Class Inheritance can be used to define functionality to a set of pages.
We can make functional logic transparent to the tests by returning different
inherited classes.
BAD TESTS
globalVars.logDescription = "log in";
globalVars.selenium.Open(globalVars.mobiUrl);
functions.type("userId", globalVars.studName + "1");
functions.type("password", globalVars.studPass + "1");
functions.clickAndWait("signInBtn");
selenium.click("//a[@id='discussions']/span");
selenium.click("//a[@id='thingsToKnow']/span");
globalVars.logDescription = "Checking elements on happenings:by date page";
selenium.waitForElementNotVisible("//div[@id='THSContainer']//span[@class='ajaxLoadingHeader']");
selenium.waitForElementVisible("//div[@id='THSContainer']/ul[1]/li[1]");
selenium.click("//div[@id='THSContainer']//span[@class='replytext']");
selenium.click("backButton");
selenium.waitForElementVisible("//div[@id='TTHContainer']/ul[1]/li[1]");
selenium.click("//div[@id='TTHContainer']//span[@class='replytext']");
selenium.click("backButton");
globalVars.selenium.Select("byDateFilter", "label=Things Happening Soon");
selenium.waitForElementVisible("//div[@id='THSContainer']/ul[1]/li[1]");
selenium.click("//div[@id='THSContainer']//span[@class='replytext']");
selenium.click("backButton");
globalVars.selenium.Select("byDateFilter", "label=Things That Happened");
BETTER TESTS
[Test]
public void testByDateTab()
{
funtions.loginMobi();
selenium.click("//a[@id='discussions']/span");
selenium.click("//a[@id='thingsToKnow']/span");
functions.verifyThingsToKnow();
functions.verifyThingsHappeningSoon();
selenium.Select("byDateFilter", "label=Things That Happened");
functions.verifyThingsThatHappened();
}
GOOD TESTS
[Test]
public void testByDateTab()
{
selenium.Open(Moby_Common.MobyLoginUrl);
LoginPage loginPage = new LoginPage(selenium);
HappeningsPage happeningsPage = loginPage.loginAs(Common.stud1Name, Common.stud1Password);
happeningsPage.waitToLoad();
Assert.That(!happeningsPage.isByTypePageLoaded());
Assert.That(happeningsPage.isByDatePageLoaded());
Assert.That(!happeningsPage.isByCoursePageLoaded());
happeningsPage.filterResults("byDateFilter","Things That Happened");
Assert.That(happeningsPage.isVisible("TTHContainer"));
happeningsPage.filterResults("byDateFilter", "Things Happening Soon");
Assert.That(happeningsPage.isVisible("THSContainer"));
happeningsPage.filterResults("byDateFilter", "All Types");
Assert.That(happeningsPage.isVisible("TTHContainer"));
Assert.That(happeningsPage.isVisible("THSContainer"));
}
THE PAGE OBJECT:
public class HappeningsPage : WebPageBaseClass
{
private string _loadingImage =
"//span[@class='ajaxLoadingHeader']";
private string _moreLink = "more";
public HappeningsPage(ISelenium selenium)
{
this.selenium = selenium;
this.title = "Happenings";
this.url = "index.html";
assertPageLoadedCorrectly();
}
public HappeningsPage waitToLoad()
{
waitForElementNotVisible(_loadingImage );
return new HappeningsPage(selenium);
}
public ContentItemPage goToItem(string type, string name)
{
click("//div[@id='" + type + "']//span[text()=\"" + name +
"\"]");
return new ContentItemPage(selenium);
}
public HappeningsPage clickMoreLink()
{
click(_moreLink);
return new HappeningsPage(selenium);
}
public HappeningsPage filterResults(string id, string name)
{
selectDropdown(id, name);
return new HappeningsPage(selenium);
}
}