public static void TwoGenericOut()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace N
{
class C
{
int M<T>(out T t1, out T t2)
{
t1 = default;
t2 = default;
return 1;
}
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var parameters = syntaxTree.FindMethodDeclaration("M").ParameterList.Parameters;
var symbol1 = semanticModel.GetDeclaredSymbol(parameters[0], CancellationToken.None);
var symbol2 = semanticModel.GetDeclaredSymbol(parameters[1], CancellationToken.None);
Assert.AreEqual(true, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol1));
Assert.AreEqual(false, SymbolComparer.Equal((ISymbol)symbol1, (ISymbol)symbol2));
Assert.AreEqual(true, ParameterSymbolComparer.Equal(symbol1, symbol1));
Assert.AreEqual(false, ParameterSymbolComparer.Equal(symbol1, symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), ParameterSymbolComparer.Default.GetHashCode(symbol1));
Assert.AreNotEqual(SymbolComparer.Default.GetHashCode(symbol1), ParameterSymbolComparer.Default.GetHashCode(symbol2));
}
public static void Equals()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace N
{
public class C
{
public int M(int i1, int i2) => 1;
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var parameters = syntaxTree.FindMethodDeclaration("M").ParameterList.Parameters;
var symbol1 = semanticModel.GetDeclaredSymbol(parameters[0], CancellationToken.None);
var symbol2 = semanticModel.GetDeclaredSymbol(parameters[1], CancellationToken.None);
Assert.AreEqual(true, SymbolComparer.Equals((ISymbol)symbol1, (ISymbol)symbol1));
Assert.AreEqual(false, SymbolComparer.Equals((ISymbol)symbol1, (ISymbol)symbol2));
Assert.AreEqual(true, ParameterSymbolComparer.Equals(symbol1, symbol1));
Assert.AreEqual(false, ParameterSymbolComparer.Equals(symbol1, symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), ParameterSymbolComparer.Default.GetHashCode(symbol1));
Assert.AreNotEqual(SymbolComparer.Default.GetHashCode(symbol1), ParameterSymbolComparer.Default.GetHashCode(symbol2));
}
