public static void Equivalent()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace N
{
public class C
{
public int M1() => 1;
public int M2() => 2;
}
}");
var compilation = CSharpCompilation.Create("test", new[] { syntaxTree });
var semanticModel = compilation.GetSemanticModel(syntaxTree);
var node1 = syntaxTree.FindMethodDeclaration("M1");
var symbol1 = semanticModel.GetDeclaredSymbol(node1, CancellationToken.None);
var node2 = syntaxTree.FindMethodDeclaration("M2");
var symbol2 = semanticModel.GetDeclaredSymbol(node2, CancellationToken.None);
Assert.AreEqual(true, SymbolComparer.Equivalent((ISymbol)symbol1, (ISymbol)symbol1));
Assert.AreEqual(false, SymbolComparer.Equivalent((ISymbol)symbol1, (ISymbol)symbol2));
Assert.AreEqual(true, MethodSymbolComparer.Equivalent(symbol1, symbol1));
Assert.AreEqual(false, MethodSymbolComparer.Equivalent(symbol1, symbol2));
}
public void Equals()
{
var syntaxTree = CSharpSyntaxTree.ParseText(
@"
namespace RoslynSandbox
{
public class Foo
{
public int Bar1() => 1;
public int Bar2() => 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);
var node2 = syntaxTree.FindMethodDeclaration("Bar2");
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, MethodSymbolComparer.Equals(symbol1, symbol1));
Assert.AreEqual(false, MethodSymbolComparer.Equals(symbol1, symbol2));
Assert.AreEqual(SymbolComparer.Default.GetHashCode(symbol1), MethodSymbolComparer.Default.GetHashCode(symbol1));
Assert.AreNotEqual(SymbolComparer.Default.GetHashCode(symbol1), MethodSymbolComparer.Default.GetHashCode(symbol2));
}
