public void MissingTypeFromTypeForwardIsReported()
{
string forwardedTypeSyntax = @"
namespace CompatTests
{
public class ForwardedTestType { }
}
";
string leftSyntax = @"
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(CompatTests.ForwardedTestType))]
namespace CompatTests
{
public class First { }
}
";
string rightSyntax = @"
namespace CompatTests
{
public class First { }
}
";
IAssemblySymbol left = SymbolFactory.GetAssemblyFromSyntaxWithReferences(leftSyntax, new[] { forwardedTypeSyntax });
IAssemblySymbol right = SymbolFactory.GetAssemblyFromSyntax(rightSyntax);
ApiComparer differ = new();
IEnumerable <CompatDifference> differences = differ.GetDifferences(left, right);
CompatDifference[] expected = new[]
{
new CompatDifference(DiagnosticIds.TypeMustExist, string.Empty, DifferenceType.Removed, "T:CompatTests.ForwardedTestType")
};
Assert.Equal(expected, differences);
}
public void MissingTypeFromTypeForwardIsReported()
{
string forwardedTypeSyntax = @"
namespace CompatTests
{
public class ForwardedTestType { }
}
";
string leftSyntax = @"
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(CompatTests.ForwardedTestType))]
namespace CompatTests
{
public class First { }
}
";
string rightSyntax = @"
namespace CompatTests
{
public class First { }
}
";
IAssemblySymbol left = SymbolFactory.GetAssemblyFromSyntaxWithReferences(leftSyntax, new[] { forwardedTypeSyntax }, includeDefaultReferences: true);
IAssemblySymbol right = SymbolFactory.GetAssemblyFromSyntax(rightSyntax);
ApiDiffer differ = new();
IEnumerable <CompatDifference> differences = differ.GetDifferences(new[] { left }, new[] { right });
CompatDifference[] expected = new[]
{
new CompatDifference(DiagnosticIds.TypeMustExist, $"Type 'CompatTests.ForwardedTestType' exists on the contract but not on the implementation", DifferenceType.Removed, "T:CompatTests.ForwardedTestType")
};
Assert.Equal(expected, differences);
}
public void TypeForwardExistsOnBoth()
{
string forwardedTypeSyntax = @"
namespace CompatTests
{
public class ForwardedTestType { }
}
";
string syntax = @"
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(CompatTests.ForwardedTestType))]
namespace CompatTests
{
public class First { }
}
";
IEnumerable <string> references = new[] { forwardedTypeSyntax };
IAssemblySymbol left = SymbolFactory.GetAssemblyFromSyntaxWithReferences(syntax, references);
IAssemblySymbol right = SymbolFactory.GetAssemblyFromSyntaxWithReferences(syntax, references);
ApiComparer differ = new();
Assert.Empty(differ.GetDifferences(new[] { left }, new[] { right }));
}