forked from tsai/mathnet-numerics
Christoph Ruegg
13 years ago
3 changed files with 210 additions and 5 deletions
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// <copyright file="TriangularTests.cs" company="Math.NET">
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// Math.NET Numerics, part of the Math.NET Project
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// http://numerics.mathdotnet.com
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// http://github.com/mathnet/mathnet-numerics
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// http://mathnetnumerics.codeplex.com
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//
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// Copyright (c) 2009-2014 Math.NET
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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// </copyright>
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using System; |
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using System.Linq; |
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using MathNet.Numerics.Distributions; |
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using NUnit.Framework; |
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namespace MathNet.Numerics.UnitTests.DistributionTests.Continuous |
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{ |
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using Random = System.Random; |
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/// <summary>
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/// Triangular distribution tests.
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/// </summary>
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[TestFixture, Category("Distributions")] |
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public class TriangularTests |
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{ |
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/// <summary>
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/// Can create Triangular distribution.
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/// </summary>
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/// <param name="lower">Lower Bound.</param>
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/// <param name="upper">Upper Bound.</param>
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/// <param name="mode">Mode.</param>
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[TestCase(0.0, 0.0, 0.0)] |
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[TestCase(-1.0, 1.0, 0.0)] |
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[TestCase(1.0, 2.0, 1.0)] |
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[TestCase(5.0, 25.0, 25.0)] |
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[TestCase(1.0e-5, 1.0e5, 1.0e-3)] |
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[TestCase(0.0, 1.0, 0.9)] |
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[TestCase(-4.0, -0.5, -2.0)] |
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[TestCase(-13.039, 8.42, 1.17)] |
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public void CanCreateTriangular(double lower, double upper, double mode) |
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{ |
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var n = new Triangular(lower, upper, mode); |
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Assert.AreEqual(lower, n.LowerBound); |
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Assert.AreEqual(upper, n.UpperBound); |
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Assert.AreEqual(mode, n.Mode); |
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} |
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/// <summary>
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/// Triangular create fails with bad parameters.
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/// </summary>
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[TestCase(0.0, 1.0, -0.1)] |
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[TestCase(0.0, 1.0, 1.1)] |
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[TestCase(0.0, -1.0, 0.5)] |
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[TestCase(2.0, 1.0, 1.5)] |
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[TestCase(Double.NaN, 1.0, 0.5)] |
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[TestCase(0.2, Double.NaN, 0.5)] |
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[TestCase(0.5, 1.0, Double.NaN)] |
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[TestCase(Double.NaN, Double.NaN, Double.NaN)] |
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[TestCase(Double.NegativeInfinity, 1.0, 0.5)] |
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[TestCase(0.0, Double.PositiveInfinity, 0.5)] |
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public void TriangularCreateFailsWithBadParameters(double lower, double upper, double mode) |
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{ |
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Assert.That(() => new Triangular(lower, upper, mode), Throws.ArgumentException); |
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} |
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/// <summary>
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/// Validate to string.
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/// </summary>
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[Test] |
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public void ValidateToString() |
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{ |
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var n = new Triangular(0d, 2d, 1d); |
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Assert.AreEqual("Triangular(Lower = 0, Upper = 2, Mode = 1)", n.ToString()); |
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} |
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/// <summary>
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/// Can Set Lower Bound
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/// </summary>
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/// <param name="lower">New Lower Bound.</param>
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[TestCase(-0.0)] |
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[TestCase(0.0)] |
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[TestCase(0.1)] |
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[TestCase(1.0)] |
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[TestCase(10.0)] |
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public void CanSetLowerBound(double lower) |
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{ |
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new Triangular(0.0, 20.0, 10.0) |
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{ |
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LowerBound = lower |
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}; |
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} |
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/// <summary>
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/// Set LowerBound fails if greater than Mode.
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/// </summary>
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[TestCase(1.0, 0.5)] |
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[TestCase(Double.PositiveInfinity, 0.5)] |
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public void SetLowerBoundFailsIfGreaterThanMode(double lower, double mode) |
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{ |
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var n = new Triangular(0.0, 100.0, mode); |
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Assert.That(() => n.LowerBound = lower, Throws.ArgumentException); |
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} |
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// Todo: Add tests for setting upper bound and mode values.
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// Todo: Add tests for:
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// - Mean,
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// - Entropy,
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// - Skewness,
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// - Mode (note: Mode is an input parameter for this distribution),
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// - Median
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// - Minimum (should be the same as LowerBound)
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// - Maximum (should be the same as UpperBound)
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/// <summary>
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/// Can sample static.
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/// </summary>
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[Test] |
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public void CanSampleStatic() |
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{ |
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Triangular.Sample(new Random(0), 2.0, 3.0, 2.5); |
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Triangular.Sample(10.0, 100.0, 30.0); |
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} |
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/// <summary>
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/// Can sample sequence static.
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/// </summary>
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[Test] |
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public void CanSampleSequenceStatic() |
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{ |
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var ied = Triangular.Samples(new Random(0), 2.0, 3.0, 2.5); |
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ied.Take(5).ToArray(); |
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ied = Triangular.Samples(10.0, 100.0, 30.0); |
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ied.Take(5).ToArray(); |
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} |
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/// <summary>
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/// Fail sample static with wrong parameters.
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/// </summary>
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[Test] |
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public void FailSampleStatic() |
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{ |
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Assert.That(() => Triangular.Sample(new Random(0), 1.0, -1.0, 0.1), Throws.ArgumentException); |
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} |
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/// <summary>
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/// Fail sample sequence static with wrong parameters.
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/// </summary>
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[Test] |
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public void FailSampleSequenceStatic() |
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{ |
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Assert.That(() => Triangular.Samples(new Random(0), 1.0, -1.0, 0.1).First(), Throws.ArgumentException); |
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} |
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/// <summary>
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/// Can sample.
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/// </summary>
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[Test] |
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public void CanSample() |
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{ |
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var n = new Triangular(0.1, 0.3, 0.2); |
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n.Sample(); |
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} |
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/// <summary>
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/// Can sample sequence.
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/// </summary>
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[Test] |
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public void CanSampleSequence() |
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{ |
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var n = new Triangular(0.1, 0.3, 0.2); |
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var ied = n.Samples(); |
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ied.Take(5).ToArray(); |
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} |
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// Todo: Add tests for:
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// - Density
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// - DensityLn
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// - Cumulative Dist.
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// - Inverse Cumulative Dist.
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} |
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} |
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