/// <summary>
/// Initializes a new instance of the <see cref="XunitTestFrameworkDiscoverer"/> class.
/// </summary>
/// <param name="assemblyInfo">The test assembly.</param>
/// <param name="configFileName">The test configuration file.</param>
/// <param name="sourceProvider">The source information provider.</param>
/// <param name="diagnosticMessageSink">The message sink which receives <see cref="_DiagnosticMessage"/> messages.</param>
/// <param name="collectionFactory">The test collection factory used to look up test collections.</param>
public XunitTestFrameworkDiscoverer(
_IAssemblyInfo assemblyInfo,
string?configFileName,
_ISourceInformationProvider sourceProvider,
_IMessageSink diagnosticMessageSink,
IXunitTestCollectionFactory?collectionFactory = null)
: base(assemblyInfo, configFileName, sourceProvider, diagnosticMessageSink)
{
var collectionBehaviorAttribute = assemblyInfo.GetCustomAttributes(typeof(CollectionBehaviorAttribute)).SingleOrDefault();
var disableParallelization = collectionBehaviorAttribute != null && collectionBehaviorAttribute.GetNamedArgument <bool>("DisableTestParallelization");
var testAssembly = new TestAssembly(assemblyInfo, configFileName);
TestAssemblyUniqueID = testAssembly.UniqueID;
TestCollectionFactory =
collectionFactory
?? ExtensibilityPointFactory.GetXunitTestCollectionFactory(diagnosticMessageSink, collectionBehaviorAttribute, testAssembly)
?? new CollectionPerClassTestCollectionFactory(testAssembly, diagnosticMessageSink);
TestFrameworkDisplayName = $"{DisplayName} [{TestCollectionFactory.DisplayName}, {(disableParallelization ? "non-parallel" : "parallel")}]";
}
