// Copyright (c) 2007 Omer Rauchwerger (a.k.a rauchy) (omer@rauchy.net)
// All rights reserved.
//
// This file is part of Regionerate.
// 
// This program is free software; you can redistribute it and/or modify it 
// under the terms of the GNU General Public License as published by 
// the Free Software Foundation; either version 3 of the License, 
// or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System.IO;
using NUnit.Framework;
using Rauchy.Regionerate.ServiceLayer.Components.Projects;

namespace Rauchy.Regionerate.ServiceLayer.Components.Tests
{
    /// <summary>
    /// Tests the <see cref="Solution"/> class.
    /// </summary>
    [ TestFixture ]
    public class SolutionTests
    {
		#region Data Members (1) 

        private const string ResourcesDirectory = @"Resources";

		#endregion Data Members 

		#region Tests (4) 

        // [rgn] Public Methods (4)
        [ Test ]
        public void DoesNotLoadVisualBasicProject()
        {
            AssertThatNoProjectsLoad( "VisualBasicSoluion.sln" );
        }

        [ Test ]
        public void LoadsBlankSolution()
        {
            AssertThatNoProjectsLoad( "BlankSolution.sln" );
        }

        [ Test ]
        public void LoadsOnlyCSharpProjectsOnMixedSolution()
        {
            AssertThatSingleProjectLoads( "MixedSolution.sln", "Empty2005Project.csproj" );
        }

        [ Test ]
        public void LoadsSingleCSharpProject()
        {
            AssertThatSingleProjectLoads( "SingleCSharpProject.sln", "Empty2005Project.csproj" );
        }

		#endregion Tests 

		#region Helper Methods (3) 

        // [rgn] Private Methods (3)
        private static void AssertThatNoProjectsLoad( string solutionName )
        {
            string resourcePath = GetResourcePath( solutionName );

            Solution solution = new Solution( resourcePath );

            Assert.IsNull( solution.GetEnumerator().Current );
            Assert.IsFalse( solution.GetEnumerator().MoveNext() );
        }

        private static void AssertThatSingleProjectLoads( string solutionName, string expectedProjectName )
        {
            string resourcePath = GetResourcePath( solutionName );

            Solution solution = new Solution( resourcePath );
            int itemCount = 0;
            foreach ( Project project in solution )
            {
                Assert.AreEqual( expectedProjectName, project.Name );
                itemCount++;
            }

            Assert.AreEqual( 1, itemCount );
        }

        /// <summary>
        /// Gets the path to a resource.
        /// </summary>
        /// <param name="fileName">Name of the file.</param>
        private static string GetResourcePath( string fileName )
        {
            return Path.Combine( ResourcesDirectory, fileName );
        }

		#endregion Helper Methods 
    }
}