using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnitTestSharp;
using Azimuth.Interpolation;

namespace Azimuth.UnitTests.Interpolation
{
	public class LinearTests : TestFixture
	{
		public void Basic()
		{
			var linear = new Linear<Scalar>(10, -49, 10, 20);

			CheckEqual(-19.5, linear.Evaluate(15));
		}

		public void WeirdTimeStamps()
		{
			var linear = new Linear<Scalar>(10, -49, 10, -20);

			CheckEqual(-19.5, linear.Evaluate(-5));
		}

		public void IdenticalTimeStamps()
		{
			CheckThrow(typeof(System.Exception));
			var linear = new Linear<Scalar>(10, -49, 10, 10);
		}

		public void Extrapolation()
		{
			var linear = new Linear<Scalar>(10, 20, 10, 20);

			CheckEqual(30, linear.Evaluate(30));
		}
	}
}