public void Equals()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace RoslynSandbox
{
public class Foo1
{
}
public class Foo2
{
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var node1 = syntaxTree.FindTypeDeclaration("Foo1");
var symbol1 = semanticModel.GetDeclaredSymbol(node1, CancellationToken.None);
var node2 = syntaxTree.FindTypeDeclaration("Foo2");
var symbol2 = semanticModel.GetDeclaredSymbol(node2, CancellationToken.None);
Assert.AreEqual(true, SymbolComparer.Equals((ISymbol)symbol1, (ISymbol)symbol1));
Assert.AreEqual(false, SymbolComparer.Equals((ISymbol)symbol1, (ISymbol)symbol2));
Assert.AreEqual(true, TypeSymbolComparer.Equals((ITypeSymbol)symbol1, (ITypeSymbol)symbol1));
Assert.AreEqual(false, TypeSymbolComparer.Equals((ITypeSymbol)symbol1, (ITypeSymbol)symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), TypeSymbolComparer.GetHashCode(symbol1));
Assert.AreNotEqual(SymbolComparer.Default.GetHashCode(symbol1), TypeSymbolComparer.GetHashCode(symbol2));
}
public void GenericMethodsArgumentTypeParameterEquals()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace RoslynSandbox
{
public class Foo<T>
{
public int Bar1(T x) => 1;
public int Bar2(T x) => 2;
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var node1 = syntaxTree.FindMethodDeclaration("Bar1");
var symbol1 = semanticModel.GetDeclaredSymbol(node1, CancellationToken.None).Parameters[0].Type;
var node2 = syntaxTree.FindMethodDeclaration("Bar2");
var symbol2 = semanticModel.GetDeclaredSymbol(node2, CancellationToken.None).Parameters[0].Type;
Assert.AreEqual(true, SymbolComparer.Equals((ISymbol)symbol1, (ISymbol)symbol1));
Assert.AreEqual(true, SymbolComparer.Equals((ISymbol)symbol1, (ISymbol)symbol2));
Assert.AreEqual(true, TypeSymbolComparer.Equals((ITypeSymbol)symbol1, (ITypeSymbol)symbol1));
Assert.AreEqual(true, TypeSymbolComparer.Equals((ITypeSymbol)symbol1, (ITypeSymbol)symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), TypeSymbolComparer.GetHashCode(symbol1));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), TypeSymbolComparer.GetHashCode(symbol2));
}