public override SyntaxNode VisitCompilationUnit(CompilationUnitSyntax node)
{
if (!node.Usings.Any(u => NameUtilities.FullName(u.Name).StartsWith("Xunit")))
{
// This doesn't have any Xunit using declarations, it's probably some other framework
return(node);
}
_fileHasFacts = false;
node = (CompilationUnitSyntax)base.VisitCompilationUnit(node);
var firstTrivia = node?.Usings.FirstOrDefault()?.GetLeadingTrivia() ?? TriviaList();
var usingDirectives = node.Usings.Where(u => !NameUtilities.IsName(u.Name, "Xunit") && !NameUtilities.IsName(u.Name, "Xunit.Abstractions")).ToList();
if (_fileHasFacts)
{
UsingDirectiveSyntax nUnitUsing = UsingDirective(ParseName("NUnit.Framework").WithLeadingTrivia(Space));
usingDirectives.Add(nUnitUsing);
usingDirectives = SortUsing(usingDirectives);
}
if (usingDirectives.Count != 0)
{
usingDirectives[0] = usingDirectives[0].WithLeadingTrivia(firstTrivia);
}
node = node.WithUsings(List(usingDirectives));
return(node);
}
private List <UsingDirectiveSyntax> SortUsing(IReadOnlyList <UsingDirectiveSyntax> usingDirectives)
{
int NameSortingComparison(UsingDirectiveSyntax a, UsingDirectiveSyntax b)
{
string aLeft = NameUtilities.LeftMostPart(a.Name);
string bLeft = NameUtilities.LeftMostPart(b.Name);
string aFull = NameUtilities.FullName(a.Name);
string bBull = NameUtilities.FullName(b.Name);
if (aLeft == "System")
{
if (bLeft == "System")
{
return(StringComparer.Ordinal.Compare(aFull, bBull));
}
return(-1);
}
if (bLeft == "System")
{
return(1);
}
return(StringComparer.Ordinal.Compare(aFull, bBull));
}
List <UsingDirectiveSyntax> normal = usingDirectives
.Where(u => u.Alias == null && u.StaticKeyword == default)
.Select(u => u.WithoutTrivia().WithTrailingTrivia(CarriageReturnLineFeed))
.ToList();
normal.Sort(NameSortingComparison);
List <UsingDirectiveSyntax> aliases = usingDirectives.Where(u => u.Alias != null)
.Select(u => u.WithoutTrivia().WithTrailingTrivia(CarriageReturnLineFeed))
.ToList();
aliases.Sort(NameSortingComparison);
List <UsingDirectiveSyntax> statics = usingDirectives.Where(u => u.StaticKeyword != default)
.Select(u => u.WithoutTrivia().WithTrailingTrivia(CarriageReturnLineFeed))
.ToList();
statics.Sort(NameSortingComparison);
if (normal.Count != 0 && (aliases.Count != 0 || statics.Count != 0))
{
normal[^ 1] = normal[^ 1].WithTrailingTrivia(CarriageReturnLineFeed, CarriageReturnLineFeed);
public static bool IsAssert(NameSyntax name)
{
string fullName = NameUtilities.FullName(name);
return(fullName == "Assert" || fullName == "Xunit.Assert");
}