public void MethodParameterNullAnnotator_WithEmptyList_ReturnsInput()
{
var(_, methodSyntax) = CompiledSourceFileProvider.CompileMethod(
"void T (object o1, object o2, string s1, string s2, int i1, double d1) {}");
var rewriter = new MethodParameterNullAnnotator(new ParameterSyntax[0]);
var rewritten = rewriter.Visit(methodSyntax);
Assert.That(rewritten, Is.EqualTo(methodSyntax));
}
public void CastExpressionNullAnnotator_DoesNotAnnotateNonNullableCast(string castExpression)
{
var source = string.Format(c_castTemplate, castExpression);
var(semanticModel, method) = CompiledSourceFileProvider.CompileMethod(source);
var stmt = (method.Body !.Statements.First() as LocalDeclarationStatementSyntax) !;
var castExpressionSyntax = (stmt.Declaration.Variables.First().Initializer !.Value as CastExpressionSyntax) !;
var rewriter = new CastExpressionNullAnnotator(semanticModel);
var rewritten = rewriter.Visit(castExpressionSyntax);
Assert.That(rewritten, Is.InstanceOf <CastExpressionSyntax>());
Assert.That(rewritten, Is.EqualTo(castExpressionSyntax));
}
public void MethodParameterNullAnnotator_AnnotatesCanBeNullParameters()
{
var(_, methodSyntax) = CompiledSourceFileProvider.CompileMethod(
"void T (object o1, [CanBeNull] object o2, string s1, [CanBeNull] string s2, int i1, double d1) {}");
var rewriter = new MethodParameterNullAnnotator(new ParameterSyntax[0]);
var rewritten = rewriter.Visit(methodSyntax);
Assert.That(rewritten, Is.InstanceOf <MethodDeclarationSyntax>());
var rewrittenMethod = (rewritten as MethodDeclarationSyntax) !;
Assert.That(rewrittenMethod.ParameterList.Parameters[0], Is.EqualTo(methodSyntax.ParameterList.Parameters[0]).Using <SyntaxNode>((p1, p2) => p1.IsEquivalentTo(p2)));
Assert.That(rewrittenMethod.ParameterList.Parameters[2], Is.EqualTo(methodSyntax.ParameterList.Parameters[2]).Using <SyntaxNode>((p1, p2) => p1.IsEquivalentTo(p2)));
Assert.That(rewrittenMethod.ParameterList.Parameters[4], Is.EqualTo(methodSyntax.ParameterList.Parameters[4]).Using <SyntaxNode>((p1, p2) => p1.IsEquivalentTo(p2)));
Assert.That(rewrittenMethod.ParameterList.Parameters[5], Is.EqualTo(methodSyntax.ParameterList.Parameters[5]).Using <SyntaxNode>((p1, p2) => p1.IsEquivalentTo(p2)));
Assert.That(rewrittenMethod.ParameterList.Parameters[1].Type, Is.InstanceOf <NullableTypeSyntax>());
Assert.That(rewrittenMethod.ParameterList.Parameters[3].Type, Is.InstanceOf <NullableTypeSyntax>());
}
public void MethodParameterNullAnnotator_WithNullableList_AnnotatesParameters()
{
var(_, methodSyntax) = CompiledSourceFileProvider.CompileMethod(
"void T (object o1, object o2, string s1, string s2, int i1, double d1) {}");
var nullableParameter = methodSyntax.ParameterList.Parameters.Where(parameter => parameter.Identifier.ToString().Contains("2"));
var rewriter = new MethodParameterNullAnnotator(nullableParameter.ToList());
var rewritten = rewriter.Visit(methodSyntax);
Assert.That(rewritten, Is.InstanceOf <MethodDeclarationSyntax>());
var rewrittenMethod = (rewritten as MethodDeclarationSyntax) !;
Assert.That(rewrittenMethod.ParameterList.Parameters[0], Is.EqualTo(methodSyntax.ParameterList.Parameters[0]).Using <SyntaxNode>((p1, p2) => p1.IsEquivalentTo(p2)));
Assert.That(rewrittenMethod.ParameterList.Parameters[2], Is.EqualTo(methodSyntax.ParameterList.Parameters[2]).Using <SyntaxNode>((p1, p2) => p1.IsEquivalentTo(p2)));
Assert.That(rewrittenMethod.ParameterList.Parameters[4], Is.EqualTo(methodSyntax.ParameterList.Parameters[4]).Using <SyntaxNode>((p1, p2) => p1.IsEquivalentTo(p2)));
Assert.That(rewrittenMethod.ParameterList.Parameters[5], Is.EqualTo(methodSyntax.ParameterList.Parameters[5]).Using <SyntaxNode>((p1, p2) => p1.IsEquivalentTo(p2)));
Assert.That(rewrittenMethod.ParameterList.Parameters[1].Type, Is.InstanceOf <NullableTypeSyntax>());
Assert.That(rewrittenMethod.ParameterList.Parameters[3].Type, Is.InstanceOf <NullableTypeSyntax>());
}
