using System;
using System.Linq;

using NUnit.Framework;

namespace Wti.Data.Test
{
    [TestFixture]
    public class RingtoetsPipingSurfaceLineTest
    {
        [Test]
        public void DefaultConstructor_ExpectedValues()
        {
            // Call
            var surfaceLine = new RingtoetsPipingSurfaceLine();

            // Assert
            Assert.AreEqual(String.Empty, surfaceLine.Name);
            CollectionAssert.IsEmpty(surfaceLine.Points);
            Assert.IsNull(surfaceLine.StartingWorldPoint);
            Assert.IsNull(surfaceLine.EndingWorldPoint);
        }

        [Test]
        public void SetGeometry_EmptyCollection_PointsSetEmptyAndNullStartAndEndWorldPoints()
        {
            // Setup
            var surfaceLine = new RingtoetsPipingSurfaceLine();

            var sourceData = Enumerable.Empty<Point3D>();

            // Call
            surfaceLine.SetGeometry(sourceData);

            // Assert
            CollectionAssert.IsEmpty(surfaceLine.Points);
            Assert.IsNull(surfaceLine.StartingWorldPoint);
            Assert.IsNull(surfaceLine.EndingWorldPoint);
        }

        [Test]
        public void SetGeometry_CollectionOfOnePoint_InitializeStartAndEndWorldPointsToSameInstanceAndInitializePoints()
        {
            // Setup
            var surfaceLine = new RingtoetsPipingSurfaceLine();

            var sourceData = new[]
            {
                new Point3D
                {
                    X = 1.1, Y = 2.2, Z = 3.3
                }
            };

            // Call
            surfaceLine.SetGeometry(sourceData);

            // Assert
            Assert.AreNotSame(sourceData, surfaceLine.Points);
            CollectionAssert.AreEqual(sourceData, surfaceLine.Points);
            Assert.AreSame(sourceData[0], surfaceLine.StartingWorldPoint);
            Assert.AreSame(sourceData[0], surfaceLine.EndingWorldPoint);
        }

        [Test]
        public void ToString_ReturnName()
        {
            // Setup
            const string niceName = "Nice name";
            var surfaceLine = new RingtoetsPipingSurfaceLine
            {
                Name = niceName
            };

            // Call
            var text = surfaceLine.ToString();

            // Assert
            Assert.AreEqual(niceName, text);
        }
    }
}