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Run NUnit Tests in Parallel

On BrowserStack, you can run multiple NUnit tests at the same time across various browser, device, and OS combinations. This is Parallel Testing. Parallel Testing gives you the same benefits as running a multi-threaded application.

With Parallel Testing, you can run the same test on different browser/device combinations i.e. cross-browser testing, or run different tests on the same or different browser/device combinations. Parallel Testing will help you reduce the run time of your test suite, resulting in faster build times and faster releases.

Run sample test in parallel

  1. Clone the nunit-browserstack sample repo on GitHub, if not already done:

    git clone https://github.com/browserstack/nunit-browserstack.git
    
  2. Open the solution NUnit-BrowserStack.sln in Visual Studio.

  3. Setup your credentials and browser/devices where you want to run your test, in the App.config file as shown below:

    nunit-browserstack/NUnit-BrowserStack/App.config
     <?xml version="1.0" encoding="utf-8" ?>
     <configuration>
       <configSections>
         <sectionGroup name="capabilities">
           <section name="parallel" type="System.Configuration.AppSettingsSection, System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
         </sectionGroup>
    
         <sectionGroup name="environments">
           <section name="chrome" type="System.Configuration.AppSettingsSection, System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
           <section name="firefox" type="System.Configuration.AppSettingsSection, System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
           <section name="safari" type="System.Configuration.AppSettingsSection, System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
           <section name="ie" type="System.Configuration.AppSettingsSection, System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
         </sectionGroup>
       </configSections>
    
       <appSettings>
         <add key="user" value="YOUR_USERNAME" />
         <add key="key" value="YOUR_ACCESS_KEY" />
         <add key="server" value="hub-cloud.browserstack.com" />
       </appSettings>
    
       <capabilities>
         <parallel>
           <add key="browserstack.debug" value="true" />
         </parallel>
       </capabilities>
    
       <environments>
         <chrome>
           <add key="browser" value="chrome" />
         </chrome>
         <firefox>
           <add key="browser" value="firefox" />
         </firefox>
         <safari>
           <add key="browser" value="safari" />
         </safari>
         <ie>
           <add key="browser" value="ie" />
         </ie>
       </environments>
     </configuration>
    

    Following are the test cases for running the tests in parallel with NUnit.

     [TestFixture("parallel", "chrome")]
     [TestFixture("parallel", "firefox")]
     [TestFixture("parallel", "safari")]
     [TestFixture("parallel", "ie")]
     [Parallelizable(ParallelScope.Fixtures)]
     public class ParallelTest : SingleTest
     {
       public ParallelTest(string profile, string environment) : base(profile, environment) { }
     }
    
  4. You can now run your tests in parallel on BrowserStack using the following steps:

    1. Build the solution in Visual Studio
    2. Run tests with fixture parallel from Test Explorer
Note: Achieve your test coverage and build execution time goals by using our calculator to understand how many parallel sessions you need.

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