ExpressUnit

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SeleniumHelper

How to Execute Selenium Tests in Multiple Threads

I have recently added support for multi-threaded test execution in ExpressUnit. The following article will demonstrate how this new feature can be used when executing Selenium web tests.

The degree of multi-threading is controlled through configuration, and by setting the degreeOfParallelism to n, your tests will execute using up to n threads, depending on your hardware's capabilities.

The same configuration section is used to specify your selenium host (Selenium RC) and the start-up url for your tests.

Sample tests:
Code listing 1 shows two sample Selenium web tests that are configured to run in parallel. The WebTestContext defined in the using statement is responsible for instantiating the ISelenium object and launching/stopping the browser, but it assumes that a Selnium RC process is running.

[TestClass]
public class SampleWebTest
{
    [WebTest]
    public void WebTest1()
    {
        using (WebTestContext ctx = new WebTestContext())
        {
            ctx.Selenium.Open("Default.aspx");

            Confirm.IsTrue(ctx.Selenium.IsElementPresent(
                           XPathFinder.Find.Tag("div").With.Text("This is a test form1").ToXPathExpression()));

        }
    }
    
    [WebTest]
    public void WebTest2()
    {
        using (WebTestContext ctx = new WebTestContext())
        {
            ctx.Selenium.Open("Default.aspx");

            Confirm.IsTrue(ctx.Selenium.IsElementPresent(
                        XPathFinder.Find.Tag("div").Containing("This is").ToXPathExpression()));
        }
	}
}

Figure1 shows a screen shoot of ExpressUnit running the two web tests in parallel. The orange circles next to the tests indicate which tests are currently running.

Figure 1

ExpressUnit can be downloaded from the following location Download