SharpDevelop/ICSharpCode.NRefactory.Tests/CSharp/Resolver/ArrayCreateTests.cs

// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
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using System;
using ICSharpCode.NRefactory.Semantics;
using ICSharpCode.NRefactory.TypeSystem;
using NUnit.Framework;

namespace ICSharpCode.NRefactory.CSharp.Resolver
{
	[TestFixture]
	public class ArrayCreateTests : ResolverTestBase
	{
		[Test]
		public void SimpleArrayCreation()
		{
			string program = @"using System.Collections.Generic;
class A {
	static void Main() {
		var a = $new int[] { 42 }$;
	}
}
";
			var result = Resolve(program);
			Assert.AreEqual("System.Int32[]", result.Type.ReflectionName);
		}
		
		[Test]
		public void NestedArrayCreation()
		{
			string program = @"using System.Collections.Generic;
class A {
	static void Main() {
		var a = $new int[2][,][,,]$;
	}
}
";
			var result = Resolve(program);
			// a one-dimensional array of two-dimensional arrays of three-dimensional arrays
			ArrayType a1 = (ArrayType)result.Type;
			Assert.AreEqual(1, a1.Dimensions);
			ArrayType a2 = (ArrayType)a1.ElementType;
			Assert.AreEqual(2, a2.Dimensions);
			ArrayType a3 = (ArrayType)a2.ElementType;
			Assert.AreEqual(3, a3.Dimensions);
			Assert.AreEqual("System.Int32", a3.ElementType.ReflectionName);
		}
		
		[Test]
		public void InferredType()
		{
			string program = @"using System.Collections.Generic;
class A {
	static void Main() {
		var a = $new [] { 1, 1L }$;
	}
}
";
			var result = Resolve(program);
			Assert.AreEqual("System.Int64[]", result.Type.ReflectionName);
		}
		
		[Test]
		public void InferredType2D()
		{
			string program = @"using System.Collections.Generic;
class A {
	static void Main() {
		var a = $new [,] { { 1 }, { 1L } }$;
	}
}
";
			var result = Resolve(program);
			Assert.AreEqual("System.Int64[,]", result.Type.ReflectionName);
		}
		
		[Test]
		public void ArrayInitializerExpression()
		{
			string program = @"using System.Collections.Generic;
class A {
	int[] a = ${ 1 }$;
}
";
			var result = Resolve(program);
			Assert.AreEqual("System.Int32[]", result.Type.ReflectionName);
		}
		
		[Test]
		public void ArrayInitializerExpression2D()
		{
			string program = @"using System.Collections.Generic;
class A {
	int[,] a = ${ { 1 }, { 2 } }$;
}
";
			var result = Resolve(program);
			Assert.AreEqual("System.Int32[,]", result.Type.ReflectionName);
		}
		
		[Test]
		public void SizeArguments2x3()
		{
			string program = @"using System.Collections.Generic;
class A {
	int[,] a = ${ { 1, 2, 3 }, { 4, 5, 6 } }$;
}
";
			var result = Resolve<ArrayCreateResolveResult>(program);
			Assert.AreEqual(6, result.InitializerElements.Count);
			Assert.AreEqual(2, result.SizeArguments.Count);
			Assert.AreEqual(2, result.SizeArguments[0].ConstantValue);
			Assert.AreEqual(3, result.SizeArguments[1].ConstantValue);
		}
		
		[Test]
		public void SizeArguments3x2()
		{
			string program = @"using System.Collections.Generic;
class A {
	int[,] a = $new int[,] { { 1, 2 }, { 3, 4 }, { 5, 6 } }$;
}
";
			var result = Resolve<ArrayCreateResolveResult>(program);
			Assert.AreEqual("System.Int32[,]", result.Type.ReflectionName);
			Assert.AreEqual(6, result.InitializerElements.Count);
			Assert.AreEqual(2, result.SizeArguments.Count);
			Assert.AreEqual(3, result.SizeArguments[0].ConstantValue);
			Assert.AreEqual(2, result.SizeArguments[1].ConstantValue);
		}
		
		[Test]
		public void SizeArguments2xInvalid()
		{
			string program = @"using System.Collections.Generic;
class A {
	int[,] a = ${ { 1, 2, 3 }, { 4, 5 } }$;
}
";
			var result = Resolve<ArrayCreateResolveResult>(program);
			Assert.AreEqual("System.Int32[,]", result.Type.ReflectionName);
			Assert.AreEqual(5, result.InitializerElements.Count);
			Assert.AreEqual(2, result.SizeArguments.Count);
			Assert.AreEqual(2, result.SizeArguments[0].ConstantValue);
			Assert.IsTrue(result.SizeArguments[1].IsError);
		}
		
		[Test]
		public void SizeArgumentsExplicitSizeInconsistentWithActualSize()
		{
			string program = @"using System.Collections.Generic;
class A {
	int[,] a = $new int[5,6] { { 1, 2, 3 }, { 4, 5, 6 } }$;
}
";
			var result = Resolve<ArrayCreateResolveResult>(program);
			Assert.AreEqual("System.Int32[,]", result.Type.ReflectionName);
			Assert.AreEqual(6, result.InitializerElements.Count);
			Assert.AreEqual(2, result.SizeArguments.Count);
			Assert.AreEqual(5, result.SizeArguments[0].ConstantValue);
			Assert.AreEqual(6, result.SizeArguments[1].ConstantValue);
		}
		
		[Test]
		public void ArraySizeArgumentConversion()
		{
			string program = @"using System.Collections.Generic;
class A {
	static byte b = 5;
	int[] a = new int[$b$];
}
";
			Assert.AreEqual(Conversion.ImplicitNumericConversion, GetConversion(program));
		}
		
		[Test]
		public void ArrayInitializerConversion()
		{
			string program = @"using System.Collections.Generic;
class A {
	static byte b = 5;
	int[] a = new int[] { $b$ };
}
";
			Assert.AreEqual(Conversion.ImplicitNumericConversion, GetConversion(program));
		}
		
		[Test]
		public void ArrayInitializerConversion2()
		{
			string program = @"using System.Collections.Generic;
class A {
	static byte b = 5;
	int[] a = { $b$ };
}
";
			Assert.AreEqual(Conversion.ImplicitNumericConversion, GetConversion(program));
		}
	}
}