public void DiscoverTests(IEnumerable <string> sources, IDiscoveryContext discoveryContext, IMessageLogger messageLogger, ITestCaseDiscoverySink discoverySink)
{
Initialize(discoveryContext, messageLogger);
CheckIfDebug();
TestLog.Info($"NUnit Adapter {AdapterVersion}: Test discovery starting");
// Ensure any channels registered by other adapters are unregistered
CleanUpRegisteredChannels();
if (Settings.InProcDataCollectorsAvailable && sources.Count() > 1)
{
TestLog.Error("Unexpected to discover tests in multiple assemblies when InProcDataCollectors specified in run configuration.");
Unload();
return;
}
foreach (string sourceAssembly in sources)
{
string sourceAssemblyPath = Path.IsPathRooted(sourceAssembly) ? sourceAssembly : Path.Combine(Directory.GetCurrentDirectory(), sourceAssembly);
TestLog.Debug("Processing " + sourceAssembly);
if (Settings.DumpXmlTestDiscovery)
{
dumpXml = new DumpXml(sourceAssemblyPath);
}
try
{
var package = CreateTestPackage(sourceAssemblyPath, null);
NUnitEngineAdapter.CreateRunner(package);
var results = NUnitEngineAdapter.Explore();
dumpXml?.AddString(results.AsString());
if (results.IsRunnable)
{
int cases;
using (var testConverter = new TestConverterForXml(TestLog, sourceAssemblyPath, Settings))
{
var timing = new TimingLogger(Settings, TestLog);
cases = ProcessTestCases(results, discoverySink, testConverter);
timing.LogTime("Discovery/Processing/Converting:");
}
TestLog.Debug($"Discovered {cases} test cases");
// Only save if seed is not specified in runsettings
// This allows workaround in case there is no valid
// location in which the seed may be saved.
if (cases > 0 && !Settings.RandomSeedSpecified)
{
Settings.SaveRandomSeed(Path.GetDirectoryName(sourceAssemblyPath));
}
}
else
{
if (results.HasNoNUnitTests)
{
if (Settings.Verbosity > 0)
{
TestLog.Info("Assembly contains no NUnit 3.0 tests: " + sourceAssembly);
}
}
else
{
TestLog.Info("NUnit failed to load " + sourceAssembly);
}
}
}
catch (NUnitEngineException e)
{
if (e.InnerException is BadImageFormatException)
{
// we skip the native c++ binaries that we don't support.
TestLog.Warning("Assembly not supported: " + sourceAssembly);
}
else
{
TestLog.Warning("Exception thrown discovering tests in " + sourceAssembly, e);
}
}
catch (BadImageFormatException)
{
// we skip the native c++ binaries that we don't support.
TestLog.Warning("Assembly not supported: " + sourceAssembly);
}
catch (FileNotFoundException ex)
{
// Either the NUnit framework was not referenced by the test assembly
// or some other error occurred. Not a problem if not an NUnit assembly.
TestLog.Warning("Dependent Assembly " + ex.FileName + " of " + sourceAssembly + " not found. Can be ignored if not an NUnit project.");
}
catch (FileLoadException ex)
{
// Attempts to load an invalid assembly, or an assembly with missing dependencies
TestLog.Warning("Assembly " + ex.FileName + " loaded through " + sourceAssembly + " failed. Assembly is ignored. Correct deployment of dependencies if this is an error.");
}
catch (TypeLoadException ex)
{
if (ex.TypeName == "NUnit.Framework.Api.FrameworkController")
{
TestLog.Warning(" Skipping NUnit 2.x test assembly");
}
else
{
TestLog.Warning("Exception thrown discovering tests in " + sourceAssembly, ex);
}
}
catch (Exception ex)
{
TestLog.Warning("Exception thrown discovering tests in " + sourceAssembly, ex);
}
finally
{
dumpXml?.DumpForDiscovery();
NUnitEngineAdapter?.CloseRunner();
}
}
TestLog.Info($"NUnit Adapter {AdapterVersion}: Test discovery complete");
Unload();
}
private int ProcessTestCases(NUnitResults results, ITestCaseDiscoverySink discoverySink, TestConverterForXml testConverterForXml)
{
int cases = 0;
foreach (XmlNode testNode in results.TestCases())
{
try
{
var testCase = testConverterForXml.ConvertTestCase(new NUnitEventTestCase(testNode));
discoverySink.SendTestCase(testCase);
cases += 1;
}
catch (Exception ex)
{
TestLog.Warning("Exception converting " + testNode.GetAttribute("fullname"), ex);
}
}
return(cases);
}