//-----------------------------------------------------------------------
// <copyright file="Geometry2DDataTests.cs" company="Deltares">
//  Copyright (c) 2011 Deltares. All rights reserved.
// </copyright>
// <author>B.S.T.I.M. The</author>
// <email>tom.the@deltares.nl</email>
// <date>13-05-2011</date>
// <summary>Tests for Geometry2DData (2D geometry as is used by the old D-Serie programs)</summary>
//-----------------------------------------------------------------------
namespace Deltares.Dam.Tests
{
    using System;
    using Deltares.Dam.Data;
    using NUnit.Framework;

    [TestFixture]
    public class Geometry2DDataTests
    {
        [Test]
        public void AddBoundaryLineIncreasesCount()
        {
            var geometry2DData = new Geometry2DData();
            Assert.AreEqual(0, geometry2DData.LayerCount, "New Geometry2DData object should have no boundary lines");
            geometry2DData.AddLayer(new Geometry2DLayer());
            Assert.AreEqual(1, geometry2DData.LayerCount, "Adding boundary line did not increase boundary line count");
        }

        [Test]
        public void GetBoundaryLineReturnsCorrectObject()
        {
            var geometry2DData = new Geometry2DData();
            var geometry2DBoundaryLine0 = new Geometry2DBoundaryLine();
            geometry2DBoundaryLine0.Points.Add(new Geometry2DPoint(1.0, 0.0));
            geometry2DBoundaryLine0.Points.Add(new Geometry2DPoint(10.0, 1.1));
            geometry2DData.AddLayer(new Geometry2DLayer() { boundaryLine = geometry2DBoundaryLine0 });
            var geometry2DBoundaryLine1 = new Geometry2DBoundaryLine();
            geometry2DBoundaryLine1.Points.Add(new Geometry2DPoint(1.0, 1.0));
            geometry2DBoundaryLine1.Points.Add(new Geometry2DPoint(10.0, 2.1));
            geometry2DData.AddLayer(new Geometry2DLayer() { boundaryLine = geometry2DBoundaryLine1 });

            Geometry2DLayer layerActual = geometry2DData.GetLayer(0);
            Assert.IsTrue(geometry2DBoundaryLine0.Equals(layerActual.boundaryLine));
            Assert.IsFalse(layerActual.boundaryLine.Equals(new Geometry2DBoundaryLine()));

            layerActual = geometry2DData.GetLayer(1);
            Assert.IsTrue(geometry2DBoundaryLine1.Equals(layerActual.boundaryLine));
        }


        [Test]
        [ExpectedException(typeof(ArgumentOutOfRangeException))]
        public void IndexTooSmallRaisesException()
        {
            var geometry2DData = new Geometry2DData();
            geometry2DData.AddLayer(new Geometry2DLayer());
            Geometry2DLayer geometry2DLayerActual = geometry2DData.GetLayer(0);
            geometry2DLayerActual = geometry2DData.GetLayer(-1);
        }

        [Test]
        [ExpectedException(typeof(ArgumentOutOfRangeException))]
        public void IndexTooLargeRaisesException()
        {
            var geometry2DData = new Geometry2DData();
            geometry2DData.AddLayer(new Geometry2DLayer());
            Geometry2DLayer geometry2DLayerActual = geometry2DData.GetLayer(0);
            geometry2DLayerActual = geometry2DData.GetLayer(1);
        }

        [Test]
        public void AlignedBoundaryLinesValidateSuccesful()
        {
            var geometry2DData = new Geometry2DData();
            Geometry2DBoundaryLine geometry2DBoundaryLine0 = Add2AlignedBoundaryLines(geometry2DData);
            geometry2DData.Validate(); // Should succeed
        }

        [Test]
        [ExpectedException(typeof(Geometry2DDataException))]
        public void LeftUnalignedBoundaryLinesRaiseExceptionOnValidate()
        {
            var geometry2DData = new Geometry2DData();
            Geometry2DBoundaryLine geometry2DBoundaryLine0 = Add2AlignedBoundaryLines(geometry2DData);
            geometry2DBoundaryLine0.Points[0].X += 1.0;
            geometry2DData.Validate(); // Should fail
        }

        [Test]
        [ExpectedException(typeof(Geometry2DDataException))]
        public void RightUnalignedBoundaryLinesRaiseExceptionOnValidate()
        {
            var geometry2DData = new Geometry2DData();
            Geometry2DBoundaryLine geometry2DBoundaryLine0 = Add2AlignedBoundaryLines(geometry2DData);
            geometry2DBoundaryLine0.Points[geometry2DBoundaryLine0.Points.Count - 1].X += 1.0;
            geometry2DData.Validate(); // Should fail
        }

        private Geometry2DBoundaryLine Add2AlignedBoundaryLines(Geometry2DData geometry2DData)
        {
            var geometry2DBoundaryLine0 = new Geometry2DBoundaryLine();
            geometry2DBoundaryLine0.Points.Add(new Geometry2DPoint(0.0, 0.0));
            geometry2DBoundaryLine0.Points.Add(new Geometry2DPoint(10.0, 1.1));
            geometry2DData.AddLayer(new Geometry2DLayer() { boundaryLine = geometry2DBoundaryLine0 });
            var geometry2DBoundaryLine1 = new Geometry2DBoundaryLine();
            geometry2DBoundaryLine1.Points.Add(new Geometry2DPoint(0.0, 1.0));
            geometry2DBoundaryLine1.Points.Add(new Geometry2DPoint(10.0, 2.1));
            geometry2DData.AddLayer(new Geometry2DLayer() { boundaryLine = geometry2DBoundaryLine1 });
            return geometry2DBoundaryLine0;
        }
    }
}