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325 lines
14 KiB
325 lines
14 KiB
// <copyright file="Complex32Test.TextHandling.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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//
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// Copyright (c) 2009-2016 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.Globalization;
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using NUnit.Framework;
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namespace MathNet.Numerics.UnitTests.ComplexTests
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{
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/// <summary>
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/// Complex32 text handling tests.
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/// </summary>
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[TestFixture]
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public class Complex32TextHandlingTest
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{
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/// <summary>
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/// Can format complex to string.
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/// </summary>
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/// <param name="real">Real part.</param>
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/// <param name="imag">Imaginary part.</param>
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/// <param name="expected">Expected value.</param>
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[TestCase(1, -2, "(1, -2)")]
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[TestCase(1, 2, "(1, 2)")]
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[TestCase(1, 0, "(1, 0)")]
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[TestCase(0, -2, "(0, -2)")]
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[TestCase(0, 2, "(0, 2)")]
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[TestCase(0, 0, "(0, 0)")]
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[TestCase(Single.NaN, Single.NaN, "({1}, {1})")]
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[TestCase(Single.NaN, 0, "({1}, 0)")]
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[TestCase(0, Single.NaN, "(0, {1})")]
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[TestCase(Single.PositiveInfinity, Single.PositiveInfinity, "({2}, {2})")]
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[TestCase(1.1f, 0, "(1{0}1, 0)")]
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[TestCase(-1.1f, 0, "(-1{0}1, 0)")]
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[TestCase(0, 1.1f, "(0, 1{0}1)")]
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[TestCase(0, -1.1f, "(0, -1{0}1)")]
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[TestCase(1.1f, 1.1f, "(1{0}1, 1{0}1)")]
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public void CanFormatComplexToString(float real, float imag, string expected)
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{
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var numberFormat = NumberFormatInfo.CurrentInfo;
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var a = new Complex32(real, imag);
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Assert.AreEqual(
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String.Format(
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expected,
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numberFormat.NumberDecimalSeparator,
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numberFormat.NaNSymbol,
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numberFormat.PositiveInfinitySymbol),
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a.ToString());
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}
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/// <summary>
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/// Can format complex to string with culture.
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/// </summary>
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/// <param name="cultureName">Culture ID.</param>
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/// <param name="number">Complex Number.</param>
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[TestCase("en-US", "1.1")]
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[TestCase("tr-TR", "1,1")]
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[TestCase("de-DE", "1,1")]
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//[TestCase("de-CH", "1.1")] Windows 8.1 issue, see http://bit.ly/W81deCH
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//[TestCase("he-IL", "1.1")] Mono 4 Issue
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public void CanFormatComplexToStringWithCulture(string cultureName, string number)
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{
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var provider = new CultureInfo(cultureName);
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var nan = double.NaN.ToString(provider);
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var infinity = double.PositiveInfinity.ToString(provider);
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Assert.AreEqual("(" + nan + ", " + nan + ")", Complex32.NaN.ToString(provider));
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Assert.AreEqual("(" + infinity + ", " + infinity + ")", Complex32.PositiveInfinity.ToString(provider));
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Assert.AreEqual("(0, 0)", Complex32.Zero.ToString(provider));
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Assert.AreEqual("(" + String.Format("{0}", number) + ", 0)", new Complex32(1.1f, 0.0f).ToString(provider));
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Assert.AreEqual("(" + String.Format("-{0}", number) + ", 0)", new Complex32(-1.1f, 0f).ToString(provider));
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Assert.AreEqual("(0, " + String.Format("-{0}", number) + ")", new Complex32(0.0f, -1.1f).ToString(provider));
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Assert.AreEqual("(0, " + String.Format("{0}", number) + ")", new Complex32(0.0f, 1.1f).ToString(provider));
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Assert.AreEqual("(" + String.Format("{0}", number) + ", " + String.Format("{0}", number) + ")", new Complex32(1.1f, 1.1f).ToString(provider));
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}
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/// <summary>
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/// Can format complex to string with format.
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/// </summary>
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[Test]
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public void CanFormatComplexToStringWithFormat()
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{
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Assert.AreEqual("(0, 0)", String.Format("{0:G}", Complex32.Zero));
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Assert.AreEqual("(1, 2)", String.Format("{0:G}", new Complex32(1, 2)));
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Assert.AreEqual("(001, 002)", String.Format("{0:000;minus 000;zero}", new Complex32(1, 2)));
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Assert.AreEqual("(zero, minus 002)", String.Format("{0:000;minus 000;zero}", new Complex32(0, -2)));
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Assert.AreEqual("(zero, zero)", String.Format("{0:000;minus 000;zero}", Complex32.Zero));
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Assert.AreEqual("(0, 0)", Complex32.Zero.ToString("G"));
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Assert.AreEqual("(1, 2)", new Complex32(1, 2).ToString("G"));
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Assert.AreEqual("(001, 002)", new Complex32(1, 2).ToString("#000;minus 000;zero"));
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Assert.AreEqual("(zero, minus 002)", new Complex32(0, -2).ToString("#000;minus 000;zero"));
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Assert.AreEqual("(zero, zero)", Complex32.Zero.ToString("#000;minus 000;zero"));
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}
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/// <summary>
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/// Can format complex to string with format invariant.
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/// </summary>
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[Test]
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public void CanFormatComplexToStringWithFormatInvariant()
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{
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var culture = CultureInfo.InvariantCulture;
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Assert.AreEqual("(NaN, NaN)", String.Format(culture, "{0:.000}", Complex32.NaN));
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Assert.AreEqual("(.000, .000)", String.Format(culture, "{0:.000}", Complex32.Zero));
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Assert.AreEqual("(1.100, .000)", String.Format(culture, "{0:.000}", new Complex32(1.1f, 0.0f)));
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Assert.AreEqual("(1.100, 1.100)", String.Format(culture, "{0:.000}", new Complex32(1.1f, 1.1f)));
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Assert.AreEqual("(NaN, NaN)", Complex32.NaN.ToString("#.000", culture));
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Assert.AreEqual("(Infinity, Infinity)", Complex32.PositiveInfinity.ToString("#.000", culture));
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Assert.AreEqual("(.000, .000)", Complex32.Zero.ToString("#.000", culture));
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Assert.AreEqual("(1.100, .000)", new Complex32(1.1f, 0.0f).ToString("#.000", culture));
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Assert.AreEqual("(.000, -1.100)", new Complex32(0.0f, -1.1f).ToString("#.000", culture));
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Assert.AreEqual("(.000, 1.100)", new Complex32(0.0f, 1.1f).ToString("#.000", culture));
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Assert.AreEqual("(1.100, 1.100)", new Complex32(1.1f, 1.1f).ToString("#.000", culture));
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}
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/// <summary>
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/// Can parse string to complex with a culture.
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/// </summary>
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/// <param name="text">Text to parse.</param>
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/// <param name="expectedReal">Expected real part.</param>
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/// <param name="expectedImaginary">Expected imaginary part.</param>
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/// <param name="cultureName">Culture ID.</param>
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[TestCase("-1 -2i", -1, -2, "en-US")]
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[TestCase("-1 - 2i ", -1, -2, "de-CH")]
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public void CanParseStringToComplexWithCulture(string text, float expectedReal, float expectedImaginary, string cultureName)
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{
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var parsed = Complex32.Parse(text, new CultureInfo(cultureName));
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Assert.AreEqual(expectedReal, parsed.Real);
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Assert.AreEqual(expectedImaginary, parsed.Imaginary);
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}
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/// <summary>
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/// Can try parse string to complex with invariant.
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/// </summary>
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/// <param name="str">String to parse.</param>
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/// <param name="expectedReal">Expected real part.</param>
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/// <param name="expectedImaginary">Expected imaginary part.</param>
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[TestCase("1", 1, 0)]
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[TestCase("-1", -1, 0)]
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[TestCase("-i", 0, -1)]
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[TestCase("i", 0, 1)]
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[TestCase("2i", 0, 2)]
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[TestCase("1 + 2i", 1, 2)]
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[TestCase("1+2i", 1, 2)]
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[TestCase("1 - 2i", 1, -2)]
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[TestCase("1-2i", 1, -2)]
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[TestCase("1,2 ", 1, 2)]
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[TestCase("1 , 2", 1, 2)]
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[TestCase("1,2i", 1, 2)]
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[TestCase("-1, -2i", -1, -2)]
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[TestCase(" - 1 , - 2 i ", -1, -2)]
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[TestCase("(+1,2i)", 1, 2)]
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[TestCase("(-1 , -2)", -1, -2)]
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[TestCase("(-1 , -2i)", -1, -2)]
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[TestCase("(+1e1 , -2e-2i)", 10, -0.02f)]
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[TestCase("(-1E1 -2e2i)", -10, -200)]
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[TestCase("(-1e+1 -2e2i)", -10, -200)]
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[TestCase("(-1e1 -2e+2i)", -10, -200)]
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[TestCase("(-1e-1 -2E2i)", -0.1f, -200)]
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[TestCase("(-1e1 -2e-2i)", -10, -0.02f)]
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[TestCase("(-1E+1 -2e+2i)", -10, -200)]
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[TestCase("(-1e-1,-2e-2i)", -0.1f, -0.02f)]
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[TestCase("(+1 +2i)", 1, 2)]
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[TestCase("(-1E+1 -2e+2i)", -10, -200)]
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[TestCase("(-1e-1,-2e-2i)", -0.1f, -0.02f)]
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public void CanTryParseStringToComplexWithInvariant(string str, float expectedReal, float expectedImaginary)
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{
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var invariantCulture = CultureInfo.InvariantCulture;
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Complex32 z;
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var ret = Complex32.TryParse(str, invariantCulture, out z);
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Assert.IsTrue(ret);
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Assert.AreEqual(expectedReal, z.Real);
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Assert.AreEqual(expectedImaginary, z.Imaginary);
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}
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/// <summary>
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/// If missing closing paren parse throws <c>FormatException</c>.
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/// </summary>
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[Test]
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public void IfMissingClosingParenParseThrowsFormatException()
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{
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Assert.That(() => Complex32.Parse("(1,2"), Throws.TypeOf<FormatException>());
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}
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/// <summary>
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/// Try parse can handle symbols.
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/// </summary>
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[Test]
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public void TryParseCanHandleSymbols()
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{
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Complex32 z;
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var ni = NumberFormatInfo.CurrentInfo;
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var separator = CultureInfo.CurrentCulture.TextInfo.ListSeparator;
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var ret = Complex32.TryParse(
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ni.NegativeInfinitySymbol + separator + ni.PositiveInfinitySymbol, out z);
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Assert.IsTrue(ret, "A1");
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Assert.AreEqual(float.NegativeInfinity, z.Real, "A2");
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Assert.AreEqual(float.PositiveInfinity, z.Imaginary, "A3");
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ret = Complex32.TryParse(ni.NaNSymbol + separator + ni.NaNSymbol, out z);
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Assert.IsTrue(ret, "B1");
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Assert.AreEqual(float.NaN, z.Real, "B2");
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Assert.AreEqual(float.NaN, z.Imaginary, "B3");
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ret = Complex32.TryParse(ni.NegativeInfinitySymbol + "+" + ni.PositiveInfinitySymbol + "i", out z);
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Assert.IsTrue(ret, "C1");
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Assert.AreEqual(float.NegativeInfinity, z.Real, "C2");
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Assert.AreEqual(float.PositiveInfinity, z.Imaginary, "C3");
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ret = Complex32.TryParse(ni.NaNSymbol + "+" + ni.NaNSymbol + "i", out z);
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Assert.IsTrue(ret, "D1");
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Assert.AreEqual(float.NaN, z.Real, "D2");
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Assert.AreEqual(float.NaN, z.Imaginary, "D3");
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ret = Complex32.TryParse(
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float.MaxValue.ToString("R") + " " + float.MinValue.ToString("R") + "i",
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out z);
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Assert.IsTrue(ret, "E1");
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Assert.AreEqual(float.MaxValue, z.Real, "E2");
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Assert.AreEqual(float.MinValue, z.Imaginary, "E3");
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}
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#if !NETCOREAPP1_1
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/// <summary>
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/// Try parse can handle symbols with a culture.
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/// </summary>
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/// <param name="cultureName">Culture ID.</param>
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[TestCase("en-US")]
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[TestCase("tr-TR")]
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[TestCase("de-DE")]
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[TestCase("de-CH")]
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//[TestCase("he-IL")] Mono 4 Issue
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public void TryParseCanHandleSymbolsWithCulture(string cultureName)
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{
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Complex32 z;
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var culture = new CultureInfo(cultureName);
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var ni = culture.NumberFormat;
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var separator = culture.TextInfo.ListSeparator;
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var ret = Complex32.TryParse(
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ni.NegativeInfinitySymbol + separator + ni.PositiveInfinitySymbol, culture, out z);
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Assert.IsTrue(ret, "A1");
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Assert.AreEqual(float.NegativeInfinity, z.Real, "A2");
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Assert.AreEqual(float.PositiveInfinity, z.Imaginary, "A3");
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ret = Complex32.TryParse(ni.NaNSymbol + separator + ni.NaNSymbol, culture, out z);
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Assert.IsTrue(ret, "B1");
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Assert.AreEqual(float.NaN, z.Real, "B2");
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Assert.AreEqual(float.NaN, z.Imaginary, "B3");
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ret = Complex32.TryParse(ni.NegativeInfinitySymbol + "+" + ni.PositiveInfinitySymbol + "i", culture, out z);
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Assert.IsTrue(ret, "C1");
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Assert.AreEqual(float.NegativeInfinity, z.Real, "C2");
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Assert.AreEqual(float.PositiveInfinity, z.Imaginary, "C3");
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ret = Complex32.TryParse(ni.NaNSymbol + "+" + ni.NaNSymbol + "i", culture, out z);
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Assert.IsTrue(ret, "D1");
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Assert.AreEqual(float.NaN, z.Real, "D2");
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Assert.AreEqual(float.NaN, z.Imaginary, "D3");
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ret = Complex32.TryParse(
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float.MaxValue.ToString("R", culture) + " " + float.MinValue.ToString("R", culture) + "i",
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culture,
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out z);
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Assert.IsTrue(ret, "E1");
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Assert.AreEqual(float.MaxValue, z.Real, "E2");
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Assert.AreEqual(float.MinValue, z.Imaginary, "E3");
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}
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#endif
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/// <summary>
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/// Try parse returns false when given bad value with invariant.
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/// </summary>
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/// <param name="str">String to parse.</param>
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[TestCase("")]
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[TestCase("+")]
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[TestCase("1-")]
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[TestCase("i+")]
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[TestCase("1/2i")]
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[TestCase("1i+2i")]
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[TestCase("i1i")]
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[TestCase("(1i,2)")]
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[TestCase("1e+")]
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[TestCase("1e")]
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[TestCase("1,")]
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[TestCase(",1")]
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[TestCase(null)]
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[TestCase("()")]
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[TestCase("( )")]
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public void TryParseReturnsFalseWhenGivenBadValueWithInvariant(string str)
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{
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Complex32 z;
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var ret = Complex32.TryParse(str, CultureInfo.InvariantCulture, out z);
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Assert.IsFalse(ret);
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Assert.AreEqual(0, z.Real);
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Assert.AreEqual(0, z.Imaginary);
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}
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}
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}
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