I am in the middle of trying to get specflow UI tests working with TFS build and I am very very close.
I wanted to be able to run the same test on a number of browsers, and so after some research I found this:
http://www.baseclass.ch/blog/Lists/Beitraege/Post.aspx?ID=4&mobile=0
And it works like a dream for local test runs. the next step was to get this to call a selenium grid during a TFS 2010 build.
After getting the nunit community build task into my build template, I am now stuck with an error I can't seem to resolve. The build reports the following error:
Error: The system cannot find the file specified. Stack Trace: at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo) at System.Diagnostics.Process.Start() at TfsBuildExtensions.Activities.CodeQuality.NUnit.RunProcess(String fullPath, String workingDirectory, String arguments) in d:\Projects\CodePlex\teambuild2010contrib\CustomActivities\Legacy\VS2010\Source\Activities\CodeQuality\NUnit\NUnit.cs:line 339 at TfsBuildExtensions.Activities.CodeQuality.NUnit.PublishMSTestResults(String resultTrxFile, String collectionUrl, String buildNumber, String teamProject, String platform, String flavor) in d:\Projects\CodePlex\teambuild2010contrib\CustomActivities\Legacy\VS2010\Source\Activities\CodeQuality\NUnit\NUnit.cs:line 394 at TfsBuildExtensions.Activities.CodeQuality.NUnit.PublishTestResultsToTFS(ActivityContext context, String folder) in d:\Projects\CodePlex\teambuild2010contrib\CustomActivities\Legacy\VS2010\Source\Activities\CodeQuality\NUnit\NUnit.cs:line 387 at TfsBuildExtensions.Activities.CodeQuality.NUnit.InternalExecute() in d:\Projects\CodePlex\teambuild2010contrib\CustomActivities\Legacy\VS2010\Source\Activities\CodeQuality\NUnit\NUnit.cs:line 299 at TfsBuildExtensions.Activities.BaseCodeActivity.Execute(CodeActivityContext context) in d:\Projects\CodePlex\teambuild2010contrib\CustomActivities\Legacy\VS2010\Source\Common\BaseCodeActivity.cs:line 67.
however, this seems to be masking a deeper error as to me it simply says that nunit can't load a custom assembly. So I had a look through the binaries folder on the build server for the nunit logs, and sure enough in my test run .xml file I find another error:
System.Configuration.ConfigurationErrorsException : The type 'OpenQA.Selenium.Remote.RemoteWebDriver, Baseclass.Contrib.SpecFlow.Selenium.NUnit.SpecFlowPlugin' could not be found. It may require assembly qualification, e.g. "MyType, MyAssembly".
at Autofac.Configuration.ConfigurationRegistrar.LoadType(String typeName, Assembly defaultAssembly)
at Autofac.Configuration.ConfigurationRegistrar.RegisterConfiguredComponents(ContainerBuilder builder, SectionHandler configurationSection)
at Autofac.Configuration.ConfigurationRegistrar.RegisterConfigurationSection(ContainerBuilder builder, SectionHandler configurationSection)
at Autofac.Configuration.Core.ConfigurationModule.Load(ContainerBuilder builder)
at Autofac.Module.Configure(IComponentRegistry componentRegistry)
at Autofac.ContainerBuilder.Build(IComponentRegistry componentRegistry, Boolean excludeDefaultModules)
at Autofac.ContainerBuilder.Build(ContainerBuildOptions options)
at RegistrationForm.Tests.Acceptance.Features.UserRegistrationFeature.FeatureSetup() in c:\Builds\1\Testing\RegistrationForm - Nightly - Main\Sources\Testing\RegistrationForm\Main\RegistrationForm.Tests.Acceptance\Features\UserRegistration.feature.cs:line 0
From this I started to look at the path to the custom assembly. This is specified in the app.config file for the project (which is transformed during the build. I also checked to ensure the file is being transformed, and in the binaries directory on the build server it is). the relevant section of the file is this.
<specFlow>
<stepAssemblies>
<stepAssembly assembly="SpecFlow.Assist.Dynamic" />
<stepAssembly assembly="Baseclass.Contrib.SpecFlow.Selenium.NUnit.Bindings" />
</stepAssemblies>
<unitTestProvider name="SeleniumNUnit" />
<plugins>
<add name="Baseclass.Contrib.SpecFlow.Selenium.NUnit" path="..\packages\Baseclass.Contrib.SpecFlow.Selenium.NUnit.1.2.0\tools" />
</plugins>
Which works locally. I figured I just need to change the path in the transformed file. At first I assumed the working directory was the binaries directory so in the transform file I have this:
<specFlow>
<plugins xdt:Transform="Replace">
<add name="Baseclass.Contrib.SpecFlow.Selenium.NUnit" path="." />
</plugins>
The dll is in the same dir (binaries) so I tried ".", "", ".\" - none of these worked. So after thinking a little more and reading the errors more carefully I thought I needed to look in the Sources folder on the build server. The Dll is in the packages folder (nuget package restore), and so the path should be the same as I use locally. this didn't work either. So what about a path relative to the ".feature" file throwing the error? this simply needed an extra "..\" - still no luck.
So i am at a bit of a loss, I feel I have tried all the paths i can think of, but my knowledge of specflow plugins and TFS build is letting me down. can anyone give me any pointers?