private static void AnalyzeAttribute(SyntaxNodeAnalysisContext context)
{
var methodNode = context.Node.Ancestors().OfType <MethodDeclarationSyntax>().FirstOrDefault();
if (methodNode != null)
{
if (!methodNode.ContainsDiagnostics)
{
var testCaseType = context.SemanticModel.Compilation.GetTypeByMetadataName(NunitFrameworkConstants.FullNameOfTypeTestCaseAttribute);
var testType = context.SemanticModel.Compilation.GetTypeByMetadataName(NunitFrameworkConstants.FullNameOfTypeTestAttribute);
if (testCaseType == null && testType == null)
{
return;
}
var attributeNode = (AttributeSyntax)context.Node;
var attributeSymbol = context.SemanticModel.GetSymbolInfo(attributeNode).Symbol;
var isTestCaseAttribute = IsAttribute(testCaseType, NunitFrameworkConstants.NameOfTestCaseAttribute, attributeSymbol);
var isTestAttribute = IsAttribute(testType, NunitFrameworkConstants.NameOfTestAttribute, attributeSymbol);
if (isTestCaseAttribute || isTestAttribute)
{
context.CancellationToken.ThrowIfCancellationRequested();
var methodSymbol = context.SemanticModel.GetDeclaredSymbol(methodNode);
context.CancellationToken.ThrowIfCancellationRequested();
TestMethodUsageAnalyzer.AnalyzeExpectedResult(context, attributeNode, methodSymbol);
}
}
}
}
private static void AnalyzeExpectedResult(SyntaxNodeAnalysisContext context,
ImmutableArray <AttributeArgumentSyntax> attributeNamedArguments, IMethodSymbol methodSymbol)
{
var expectedResultNamedArgument = attributeNamedArguments.SingleOrDefault(
_ => _.DescendantTokens().Any(__ => __.Text == NunitFrameworkConstants.NameOfExpectedResult));
if (expectedResultNamedArgument != null)
{
var methodReturnValueType = methodSymbol.ReturnType;
if (methodReturnValueType.SpecialType == SpecialType.System_Void)
{
context.ReportDiagnostic(Diagnostic.Create(
TestMethodUsageAnalyzer.CreateDescriptor(
TestMethodUsageAnalyzerConstants.SpecifiedExpectedResultForVoidMethodMessage),
expectedResultNamedArgument.GetLocation()));
}
else
{
if (!expectedResultNamedArgument.CanAssignTo(methodReturnValueType, context.SemanticModel))
{
context.ReportDiagnostic(Diagnostic.Create(
TestMethodUsageAnalyzer.CreateDescriptor(
string.Format(TestMethodUsageAnalyzerConstants.ExpectedResultTypeMismatchMessage,
methodReturnValueType.MetadataName)),
expectedResultNamedArgument.GetLocation()));
}
}
}
}
private static void AnalyzeAttribute(SyntaxNodeAnalysisContext context)
{
var declarationNode = context.Node.Parent?.Parent;
if (declarationNode is MethodDeclarationSyntax methodNode)
{
if (!methodNode.ContainsDiagnostics)
{
var testCaseType = context.SemanticModel.Compilation.GetTypeByMetadataName(NunitFrameworkConstants.FullNameOfTypeTestCaseAttribute);
var testType = context.SemanticModel.Compilation.GetTypeByMetadataName(NunitFrameworkConstants.FullNameOfTypeTestAttribute);
if (testCaseType == null || testType == null)
{
return;
}
var attributeNode = (AttributeSyntax)context.Node;
var attributeSymbol = context.SemanticModel.GetSymbolInfo(attributeNode).Symbol;
var isTestCaseAttribute = IsAttribute(testCaseType, NunitFrameworkConstants.NameOfTestCaseAttribute, attributeSymbol);
var isTestAttribute = IsAttribute(testType, NunitFrameworkConstants.NameOfTestAttribute, attributeSymbol);
if (isTestCaseAttribute || (isTestAttribute && !HasITestBuilderAttribute(context.SemanticModel, methodNode.AttributeLists)))
{
context.CancellationToken.ThrowIfCancellationRequested();
var methodSymbol = context.SemanticModel.GetDeclaredSymbol(methodNode);
context.CancellationToken.ThrowIfCancellationRequested();
TestMethodUsageAnalyzer.AnalyzeExpectedResult(context, attributeNode, methodSymbol);
}
var parameters = methodNode.ParameterList.Parameters;
var testMethodParameters = parameters.Count;
var hasISimpleTestBuilderAttribute = HasISimpleTestBuilderAttribute(context.SemanticModel, methodNode.AttributeLists);
var hasITestBuilderAttribute = HasITestBuilderAttribute(context.SemanticModel, methodNode.AttributeLists);
var parametersMarkedWithIParameterDataSourceAttribute =
parameters.Count(p => HasIParameterDataSourceAttribute(context.SemanticModel, p.AttributeLists));
if (testMethodParameters > 0 &&
hasISimpleTestBuilderAttribute &&
!hasITestBuilderAttribute &&
parametersMarkedWithIParameterDataSourceAttribute < testMethodParameters)
{
context.ReportDiagnostic(
Diagnostic.Create(
simpleTestHasParameters,
attributeNode.GetLocation(),
testMethodParameters,
parametersMarkedWithIParameterDataSourceAttribute));
}
}
}
}