/// <summary>
/// Returns an implementation of <see cref="IFrontController"/> which can be used
/// for both discovery and execution.
/// </summary>
/// <param name="projectAssembly">The test project assembly.</param>
/// <param name="sourceInformationProvider">The source information provider. If <c>null</c>, uses the default (<see cref="T:Xunit.VisualStudioSourceInformationProvider"/>).</param>
/// <param name="diagnosticMessageSink">The message sink which receives <see cref="_DiagnosticMessage"/> messages.</param>
public static IFrontController ForDiscoveryAndExecution(
XunitProjectAssembly projectAssembly,
_ISourceInformationProvider?sourceInformationProvider = null,
_IMessageSink?diagnosticMessageSink = null)
{
Guard.ArgumentNotNull(projectAssembly);
var innerController = default(IFrontController);
var assemblyFileName = projectAssembly.AssemblyFileName;
var assemblyFolder = Path.GetDirectoryName(assemblyFileName);
if (diagnosticMessageSink == null)
{
diagnosticMessageSink = _NullMessageSink.Instance;
}
#if NETFRAMEWORK
if (sourceInformationProvider == null)
{
if (assemblyFileName == null)
{
sourceInformationProvider = _NullSourceInformationProvider.Instance;
}
else
{
sourceInformationProvider = new VisualStudioSourceInformationProvider(assemblyFileName, diagnosticMessageSink);
}
}
if (assemblyFolder != null)
{
if (Directory.EnumerateFiles(assemblyFolder, "xunit.execution.*.dll").Any())
{
innerController = Xunit2.ForDiscoveryAndExecution(projectAssembly, sourceInformationProvider, diagnosticMessageSink);
}
else
{
var xunitPath = Path.Combine(assemblyFolder, "xunit.dll");
if (File.Exists(xunitPath))
{
innerController = Xunit1.ForDiscoveryAndExecution(projectAssembly, sourceInformationProvider, diagnosticMessageSink);
}
}
}
#else
if (sourceInformationProvider == null)
{
sourceInformationProvider = _NullSourceInformationProvider.Instance;
}
innerController = Xunit2.ForDiscoveryAndExecution(projectAssembly, sourceInformationProvider, diagnosticMessageSink);
#endif
if (innerController == null)
{
throw new InvalidOperationException($"Unknown test framework: could not find xunit.dll (v1) or xunit.execution.*.dll (v2) in {assemblyFolder ?? "<unknown assembly folder>"}");
}
return(new XunitFrontController(innerController));
}
// Factory methods
/// <summary>
/// Returns an implementation of <see cref="IFrontControllerDiscoverer"/> which can be
/// used to discovery tests, including source-based discovery (note that xUnit.net v1
/// does not support source-based discovery).
/// </summary>
/// <param name="assemblyInfo">The assembly to use for discovery</param>
/// <param name="projectAssembly">The test project assembly.</param>
/// <param name="referenceList">The full path names of all referenced assemblies. This is used to
/// search for references to specific xUnit.net reference assemblies to determine which version
/// of xUnit.net the tests were written against.</param>
/// <param name="sourceInformationProvider">The optional source information provider.</param>
/// <param name="diagnosticMessageSink">The message sink which receives <see cref="_DiagnosticMessage"/> messages.</param>
/// <returns></returns>
public static IFrontControllerDiscoverer ForDiscovery(
_IAssemblyInfo assemblyInfo,
XunitProjectAssembly projectAssembly,
IReadOnlyCollection <string> referenceList,
_ISourceInformationProvider?sourceInformationProvider = null,
_IMessageSink?diagnosticMessageSink = null)
{
Guard.ArgumentNotNull(assemblyInfo);
Guard.ArgumentNotNull(projectAssembly);
Guard.ArgumentNotNull(referenceList);
var innerDiscoverer = default(IFrontControllerDiscoverer);
var assemblyFileName = projectAssembly.AssemblyFileName;
if (diagnosticMessageSink == null)
{
diagnosticMessageSink = _NullMessageSink.Instance;
}
if (sourceInformationProvider == null)
{
sourceInformationProvider = _NullSourceInformationProvider.Instance;
#if NETFRAMEWORK
if (assemblyFileName != null)
{
sourceInformationProvider = new VisualStudioSourceInformationProvider(assemblyFileName, diagnosticMessageSink);
}
#endif
}
var v2PathPattern = new Regex(@"^xunit\.execution\..*\.dll$");
var v2ExecutionReference = referenceList.FirstOrDefault(reference => v2PathPattern.IsMatch(Path.GetFileNameWithoutExtension(reference)));
if (v2ExecutionReference != null)
{
innerDiscoverer = Xunit2.ForDiscovery(assemblyInfo, projectAssembly, v2ExecutionReference, sourceInformationProvider, diagnosticMessageSink);
}
#if NETFRAMEWORK
if (referenceList.Any(reference => Path.GetFileNameWithoutExtension(reference) == "xunit.dll"))
{
innerDiscoverer = Xunit1.ForDiscoveryAndExecution(projectAssembly, sourceInformationProvider, diagnosticMessageSink);
}
#endif
if (innerDiscoverer == null)
{
throw new InvalidOperationException($"Unknown test framework: could not find xunit.dll (v1) or xunit.execution.*.dll (v2) in assembly reference list");
}
return(new XunitFrontController(innerDiscoverer));
}