/// <inheritdoc/>
public virtual string Serialize(ITestCase testCase)
{
return(SerializationHelper.Serialize(testCase));
}
/// <inheritdoc/>
public IEnumerable <IXunitTestCase> Discover(ITestFrameworkDiscoveryOptions discoveryOptions, ITestMethod testMethod, IAttributeInfo factAttribute)
{
var defaultMethodDisplay = discoveryOptions.MethodDisplay();
// Special case Skip, because we want a single Skip (not one per data item), and a skipped test may
// not actually have any data (which is quasi-legal, since it's skipped).
if (factAttribute.GetNamedArgument <string>("Skip") != null)
{
return new[] { new XunitTestCase(defaultMethodDisplay, testMethod) }
}
;
var dataAttributes = testMethod.Method.GetCustomAttributes(typeof(DataAttribute));
if (discoveryOptions.PreEnumerateTheories())
{
try
{
using (var memoryStream = new MemoryStream())
{
var results = new List <XunitTestCase>();
foreach (var dataAttribute in dataAttributes)
{
var discovererAttribute = dataAttribute.GetCustomAttributes(typeof(DataDiscovererAttribute)).First();
var discoverer = ExtensibilityPointFactory.GetDataDiscoverer(discovererAttribute);
if (!discoverer.SupportsDiscoveryEnumeration(dataAttribute, testMethod.Method))
{
return new XunitTestCase[] { new XunitTheoryTestCase(defaultMethodDisplay, testMethod) }
}
;
// GetData may return null, but that's okay; we'll let the NullRef happen and then catch it
// down below so that we get the composite test case.
foreach (var dataRow in discoverer.GetData(dataAttribute, testMethod.Method))
{
// Attempt to serialize the test case, since we need a way to uniquely identify a test
// and serialization is the best way to do that. If it's not serializable, this will
// throw and we will fall back to a single theory test case that gets its data
// at runtime.
var testCase = new XunitTestCase(defaultMethodDisplay, testMethod, dataRow);
SerializationHelper.Serialize(testCase);
results.Add(testCase);
}
}
// REVIEW: Could we re-write LambdaTestCase to just be for exceptions?
if (results.Count == 0)
{
results.Add(new LambdaTestCase(defaultMethodDisplay, testMethod,
() => { throw new InvalidOperationException(String.Format("No data found for {0}.{1}", testMethod.TestClass.Class.Name, testMethod.Method.Name)); }));
}
return(results);
}
}
catch { }
}
return(new XunitTestCase[] { new XunitTheoryTestCase(defaultMethodDisplay, testMethod) });
}
}