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// Copyright (c) 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.TypeSystem;
using NUnit.Framework;
namespace ICSharpCode.NRefactory.CSharp.Resolver
{
[TestFixture, Ignore("LINQ not yet implemented")]
public class LinqTests : ResolverTestBase
{
[Test]
public void SimpleLinqTest()
{
string program = @"using System; using System.Linq;
class TestClass {
void Test(string[] input) {
var r = from e in input
where e.StartsWith(""/"")
select e.Trim();
r.ToString();
}
}
";
LocalResolveResult lrr = Resolve<LocalResolveResult>(program.Replace("where e", "where $e$"));
Assert.AreEqual("System.String", lrr.Type.ReflectionName);
lrr = Resolve<LocalResolveResult>(program.Replace("select e", "select $e$"));
Assert.AreEqual("System.String", lrr.Type.ReflectionName);
lrr = Resolve<LocalResolveResult>(program.Replace("from e", "from $e$"));
Assert.AreEqual("System.String", lrr.Type.ReflectionName);
lrr = Resolve<LocalResolveResult>(program.Replace("r.ToString", "$r$.ToString"));
Assert.AreEqual("System.Collections.Generic.IEnumerable", lrr.Type.FullName);
Assert.AreEqual("System.String", ((ParameterizedType)lrr.Type).TypeArguments[0].FullName);
}
[Test]
public void LinqGroupTest()
{
string program = @"using System; using System.Linq;
class TestClass {
void Test(string[] input) {
var r = from e in input
group e.ToUpper() by e.Length;
$r$.ToString();
}
}
";
LocalResolveResult lrr = Resolve<LocalResolveResult>(program);
Assert.AreEqual("System.Collections.Generic.IEnumerable", lrr.Type.FullName);
ParameterizedType rt = (ParameterizedType)((ParameterizedType)lrr.Type).TypeArguments[0];
Assert.AreEqual("System.Linq.IGrouping", rt.FullName);
Assert.AreEqual("System.Int32", rt.TypeArguments[0].FullName);
Assert.AreEqual("System.String", rt.TypeArguments[1].FullName);
}
[Test]
public void LinqQueryableGroupTest()
{
string program = @"using System; using System.Linq;
class TestClass {
void Test(IQueryable<string> input) {
var r = from e in input
group e.ToUpper() by e.Length;
$r$.ToString();
}
}
";
LocalResolveResult lrr = Resolve<LocalResolveResult>(program);
Assert.AreEqual("System.Linq.IQueryable", lrr.Type.FullName);
ParameterizedType rt = (ParameterizedType)((ParameterizedType)lrr.Type).TypeArguments[0];
Assert.AreEqual("System.Linq.IGrouping", rt.FullName);
Assert.AreEqual("System.Int32", rt.TypeArguments[0].FullName);
Assert.AreEqual("System.String", rt.TypeArguments[1].FullName);
}
[Test]
public void ParenthesizedLinqTest()
{
string program = @"using System; using System.Linq;
class TestClass {
void Test(string[] input) {
$(from e in input select e.Length)$.ToArray();
}
}
";
ResolveResult rr = Resolve<ResolveResult>(program);
Assert.AreEqual("System.Collections.Generic.IEnumerable", rr.Type.FullName);
Assert.AreEqual("System.Int32", ((ParameterizedType)rr.Type).TypeArguments[0].FullName);
}
[Test]
public void LinqSelectReturnTypeTest()
{
string program = @"using System;
class TestClass { static void M() {
$(from a in new XYZ() select a.ToUpper())$.ToString();
}}
class XYZ {
public int Select<U>(Func<string, U> f) { return 42; }
}";
ResolveResult rr = Resolve<ResolveResult>(program);
Assert.AreEqual("System.Int32", rr.Type.FullName);
}
[Test]
public void LinqQueryContinuationTest()
{
string program = @"using System; using System.Linq;
class TestClass {
void Test(string[] input) {
var r = from x in input
select x.GetHashCode() into x
where x == 42
select x * x;
r.ToString();
}
}
";
LocalResolveResult lrr = Resolve<LocalResolveResult>(program.Replace("from x", "from $x$"));
Assert.AreEqual("System.String", lrr.Type.ReflectionName);
lrr = Resolve<LocalResolveResult>(program.Replace("select x.G", "select $x$.G"));
Assert.AreEqual("System.String", lrr.Type.ReflectionName);
lrr = Resolve<LocalResolveResult>(program.Replace("into x", "into $x$"));
Assert.AreEqual("System.Int32", lrr.Type.ReflectionName);
lrr = Resolve<LocalResolveResult>(program.Replace("where x", "where $x$"));
Assert.AreEqual("System.Int32", lrr.Type.ReflectionName);
lrr = Resolve<LocalResolveResult>(program.Replace("select x * x", "select x * $x$"));
Assert.AreEqual("System.Int32", lrr.Type.ReflectionName);
lrr = Resolve<LocalResolveResult>(program.Replace("r.ToString", "$r$.ToString"));
Assert.AreEqual("System.Collections.Generic.IEnumerable`1[[System.Int32]]", lrr.Type.ReflectionName);
}
}
}