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// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
using System;
using ICSharpCode.NRefactory.Semantics;
using ICSharpCode.NRefactory.TypeSystem;
using NUnit.Framework;
namespace ICSharpCode.NRefactory.CSharp.Resolver
{
// assign short name to the fake reflection type
using dynamic = ICSharpCode.NRefactory.TypeSystem.ReflectionHelper.Dynamic;
[TestFixture]
public class CastTests : ResolverTestBase
{
CSharpResolver resolver;
public override void SetUp()
{
base.SetUp();
resolver = new CSharpResolver(compilation);
}
void TestCast(Type targetType, ResolveResult input, Conversion expectedConversion)
{
IType type = compilation.FindType(targetType);
ResolveResult rr = resolver.ResolveCast(type, input);
AssertType(targetType, rr);
Assert.AreEqual(typeof(ConversionResolveResult), rr.GetType());
var crr = (ConversionResolveResult)rr;
Assert.AreEqual(expectedConversion, crr.Conversion, "ConversionResolveResult.Conversion");
Assert.AreSame(input, crr.Input, "ConversionResolveResult.Input");
}
[Test]
public void SimpleCast()
{
TestCast(typeof(int), MakeResult(typeof(float)), Conversion.ExplicitNumericConversion);
TestCast(typeof(string), MakeResult(typeof(object)), Conversion.ExplicitReferenceConversion);
TestCast(typeof(byte), MakeResult(typeof(dynamic)), Conversion.ExplicitDynamicConversion);
TestCast(typeof(dynamic), MakeResult(typeof(double)), Conversion.BoxingConversion);
}
[Test]
public void NullableCasts()
{
TestCast(typeof(int), MakeResult(typeof(int?)), Conversion.ExplicitNullableConversion);
TestCast(typeof(int?), MakeResult(typeof(int)), Conversion.ImplicitNullableConversion);
TestCast(typeof(int?), MakeResult(typeof(long?)), Conversion.ExplicitLiftedNumericConversion);
TestCast(typeof(long?), MakeResult(typeof(int?)), Conversion.ImplicitLiftedNumericConversion);
}
[Test]
public void ConstantValueCast()
{
AssertConstant("Hello", resolver.ResolveCast(ResolveType(typeof(string)), MakeConstant("Hello")));
AssertConstant((byte)1L, resolver.ResolveCast(ResolveType(typeof(byte)), MakeConstant(1L)));
AssertConstant(3, resolver.ResolveCast(ResolveType(typeof(int)), MakeConstant(3.1415)));
AssertConstant(3, resolver.ResolveCast(ResolveType(typeof(int)), MakeConstant(3.99)));
AssertConstant((short)-3, resolver.ResolveCast(ResolveType(typeof(short)), MakeConstant(-3.99f)));
AssertConstant(-3L, resolver.ResolveCast(ResolveType(typeof(long)), MakeConstant(-3.5)));
}
[Ignore("Broken on mcs/mac os x")]
[Test]
public void OverflowingCast()
{
AssertConstant(uint.MaxValue, resolver.WithCheckForOverflow(false).ResolveCast(ResolveType(typeof(uint)), MakeConstant(-1.6)));
AssertError(typeof(uint), resolver.WithCheckForOverflow(true).ResolveCast(ResolveType(typeof(uint)), MakeConstant(-1.6)));
}
[Test]
public void FailingStringCast()
{
AssertError(typeof(string), resolver.ResolveCast(ResolveType(typeof(string)), MakeConstant(1)));
}
[Test]
public void OverflowingCastToEnum()
{
AssertError(typeof(StringComparison), resolver.WithCheckForOverflow(true).ResolveCast(ResolveType(typeof(StringComparison)), MakeConstant(long.MaxValue)));
}
[Test]
public void ImplicitCastInConstant()
{
string program = @"using System;
class Test {
const int $MAXSIZE = ushort.MaxValue;
}";
var rr = ResolveAtLocation<MemberResolveResult>(program);
IField field = (IField)rr.Member;
Assert.IsTrue(field.IsConst);
Assert.AreEqual("System.Int32", field.Type.FullName);
Assert.AreEqual(typeof(int), field.ConstantValue.GetType());
Assert.AreEqual(ushort.MaxValue, (int)field.ConstantValue);
}
[Test]
public void ImplicitCastInLocalConstant()
{
string program = @"using System;
class Test {
void M() {
const int $MAXSIZE = ushort.MaxValue;
}
}";
var rr = ResolveAtLocation<LocalResolveResult>(program);
Assert.IsTrue(rr.Variable.IsConst);
Assert.AreEqual("System.Int32", rr.Variable.Type.FullName);
Assert.AreEqual(typeof(int), rr.Variable.ConstantValue.GetType());
Assert.AreEqual(ushort.MaxValue, (int)rr.Variable.ConstantValue);
}
}
}
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