SharpDevelop/ICSharpCode.NRefactory.Tests/CSharp/CodeIssues/IncorrectCallToGetHashCodeTests.cs

//
// IncorrectCallToGetHashCodeTests.cs
//
// Author:
//       Simon Lindgren <simon.n.lindgren@gmail.com>
//
// Copyright (c) 2012 Simon Lindgren
//
// 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 NUnit.Framework;
using ICSharpCode.NRefactory.CSharp.CodeActions;
using ICSharpCode.NRefactory.CSharp.Refactoring;

namespace ICSharpCode.NRefactory.CSharp.CodeIssues
{
	[TestFixture]
	public class IncorrectCallToGetHashCodeTests : InspectionActionTestBase
	{
		[Test]
		public void SimpleCase()
		{
			var input = @"
class Foo
{
	public override int GetHashCode()
	{
		return base.GetHashCode();
	}
}";
			TestRefactoringContext context;
			var issues = GetIssues(new IncorrectCallToObjectGetHashCodeIssue(), input, out context);
			Assert.AreEqual(1, issues.Count);
		}
		
		[Test]
		public void NonObjectBase()
		{
			var input = @"
class Foo
{
}
class Bar : Foo
{
	public override int GetHashCode()
	{
		return base.GetHashCode();
	}
}";
			TestRefactoringContext context;
			var issues = GetIssues(new IncorrectCallToObjectGetHashCodeIssue(), input, out context);
			Assert.AreEqual(1, issues.Count);
		}
		
		[Test]
		public void IgnoresCallsToOtherObjects()
		{
			var input = @"
interface IFoo
{
}
class Bar : IFoo
{
	IFoo foo;

	public override int GetHashCode()
	{
		return foo.GetHashCode();
	}
}";
			TestRefactoringContext context;
			var issues = GetIssues(new IncorrectCallToObjectGetHashCodeIssue(), input, out context);
			Assert.AreEqual(0, issues.Count);
		}
		
		[Test]
		public void DoesNotCheckOutsideOverriddenGetHashCode()
		{
			var input = @"
class Foo
{
	public void Bar()
	{
		return base.GetHashCode();
	}
}";
			TestRefactoringContext context;
			var issues = GetIssues(new IncorrectCallToObjectGetHashCodeIssue(), input, out context);
			Assert.AreEqual(0, issues.Count);
		}
		
		[Test]
		public void DoesNotWarnAboutCallsToOtherMethods()
		{
			var input = @"
class Foo
{
	public override int GetHashCode()
	{
		var type = GetType();
		return 1;
	}
}";
			TestRefactoringContext context;
			var issues = GetIssues(new IncorrectCallToObjectGetHashCodeIssue(), input, out context);
			Assert.AreEqual(0, issues.Count);
		}
	}
}