Originally posted on: http://geekswithblogs.net/Aligned/archive/2013/11/04/selenium-ndash-use-data-driven-tests-to-run-in-multiple.aspxSelenium uses WebDriver (or is it
the same? I’m still learning how it is connected) to run Automated UI tests in many different browsers. For example, you can run
the same test in Chrome and Firefox and in a smaller sized Chrome browser.
The permutations can grow quickly. One way to get them to run in MStest is to create a test method for each test (ie ChromeDeleteItem_Small, ChromeDeleteItem_Large, FFDeleteItem_Small, FFDeleteItem_Large) that each call
the same base method, passing in
the browser and size you’d like. This approach was causing a lot of duplicate code, so I decided to use
the data driven approach, common to Coded UI or Unit test methods. 1. Create a class with a test method. 2. Create a csv with two columns: BrowserType, BrowserSize 3. Add rows for each permutation: Chrome, Large | Chrome, Small | Firefox, Large | Firefox, Small | IE, Large | IE, Small | *** 4. Add
the csv to
the Visual Studio Project. 5. Set
the Copy to output directory to Copy always 6. Add
the attribute: [DataSource("Microsoft.VisualStudio.TestTools.DataSource.CSV", "|DataDirectory|\\TestMatrix.csv", "TestMatrix#csv", DataAccessMethod.Sequential), DeploymentItem("TestMatrix.csv")] 7. Run
the test in
the test explorer Example:[CodedUITest]
public class AllTasksTests : TasksTestBase
{
[TestMethod]
[TestCategory("Tasks")]
[DataSource("Microsoft.VisualStudio.TestTools.DataSource.CSV", "|DataDirectory|\\TestMatrix.csv", "TestMatrix#csv", DataAccessMethod.Sequential), DeploymentItem("TestMatrix.csv")]
public void CreateTask()
{
this.PrepForDataDrivenTest();
base.CreateTaskTest("New Task");
}
}
protected void PrepForDataDrivenTest()
{
var browserType = this.ParseBrowserType(Context.DataRow["BrowserType"].ToString());
var browserSize = this.ParseBrowserSize(Context.DataRow["BrowserSize"].ToString());
this.BrowserType = browserType;
this.BrowserSize = browserSize;
Trace.WriteLine("browser: " + browserType.ToString());
Trace.WriteLine("browser size: " + browserSize.ToString());
}
/// <summary>
/// Get
the enum value from
the string
/// </summary>
/// <param name="browserType">Chrome, Firefox, or IE</param>
/// <returns>The browser type.</returns>
private BrowserType ParseBrowserType(string browserType)
{
return (UITestFramework.BrowserType)Enum.Parse(typeof(UITestFramework.BrowserType), browserType, true);
}
/// <summary>
/// Get
the browser size enum value from
the string
/// </summary>
/// <param name="browserSize">Small, Medium, Large</param>
/// <returns>the browser size</returns>
private BrowserSizeEnum ParseBrowserSize(string browserSize)
{
return (BrowserSizeEnum)Enum.Parse(typeof(BrowserSizeEnum), browserSize, true);
}/// <summary>
/// Change
the browser to
the size based on
the enum.
/// </summary>
/// <param name="browserSize">The BrowserSizeEnum value to resize
the window to.</param>
private void ResizeBrowser(BrowserSizeEnum browserSize)
{
switch (browserSize)
{
case BrowserSizeEnum.Large:
this.driver.Manage().Window.Maximize();
break;
case BrowserSizeEnum.Medium:
this.driver.Manage().Window.Size = new Size(800, this.driver.Manage().Window.Size.Height);
break;
case BrowserSizeEnum.Small:
this.driver.Manage().Window.Size = new Size(500, this.driver.Manage().Window.Size.Height);
break;
default:
break;
}
}/// <summary>
/// Browser sizes for automation testing
/// </summary>
public enum BrowserSizeEnum
{
/// <summary>
/// Large size, Maximized to
the desktop
/// </summary>
Large,
/// <summary>
/// Similar to tablets
/// </summary>
Medium,
/// <summary>
/// Phone sizes... 610px and smaller
/// </summary>
Small
} Hope it helps!
