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mathnet-numerics/src/UnitTests/ComplexTests/Complex32Test.TextHandling.cs

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// <copyright file="ComplexTest.TextHandling.cs" company="Math.NET">
// Math.NET Numerics, part of the Math.NET Project
// http://numerics.mathdotnet.com
// http://github.com/mathnet/mathnet-numerics
// http://mathnetnumerics.codeplex.com
//
// Copyright (c) 2009-2010 Math.NET
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
// </copyright>
namespace MathNet.Numerics.UnitTests.ComplexTests
{
using System;
using System.Globalization;
using MbUnit.Framework;
[TestFixture]
public class Complex32TextHandlingTest
{
[Test]
[Row(1, -2, "(1, -2)")]
[Row(1, 2, "(1, 2)")]
[Row(1, 0, "(1, 0)")]
[Row(0, -2, "(0, -2)")]
[Row(0, 2, "(0, 2)")]
[Row(0, 0, "(0, 0)")]
[Row(Double.NaN, Double.NaN, "({1}, {1})")]
[Row(Double.NaN, 0, "({1}, 0)")]
[Row(0, Double.NaN, "(0, {1})")]
[Row(Double.PositiveInfinity, Double.PositiveInfinity, "({2}, {2})")]
[Row(1.1, 0, "(1{0}1, 0)")]
[Row(-1.1, 0, "(-1{0}1, 0)")]
[Row(0, 1.1, "(0, 1{0}1)")]
[Row(0, -1.1, "(0, -1{0}1)")]
[Row(1.1, 1.1, "(1{0}1, 1{0}1)")]
public void CanFormatComplexToString(float real, float imag, string expected)
{
var numberFormat = NumberFormatInfo.CurrentInfo;
var a = new Complex32(real, imag);
Assert.AreEqual(
String.Format(
expected,
numberFormat.NumberDecimalSeparator,
numberFormat.NaNSymbol,
numberFormat.PositiveInfinitySymbol),
a.ToString());
}
[Test]
[MultipleAsserts]
[Row("en-US", "NaN", "Infinity", "1.1")]
[Row("tr-TR", "NaN", "Infinity", "1,1")]
[Row("de-DE", "n. def.", "+unendlich", "1,1")]
[Row("de-CH", "n. def.", "+unendlich", "1.1")]
[Row("he-IL", "לא מספר", "אינסוף חיובי", "1.1")]
public void CanFormatComplexToStringWithCulture(
string cultureName, string nan, string infinity, string number)
{
var provider = CultureInfo.GetCultureInfo(cultureName);
Assert.AreEqual("(" + nan + ", " + nan + ")", Complex32.NaN.ToString(provider));
Assert.AreEqual("(" + infinity + ", " + infinity + ")", Complex32.Infinity.ToString(provider));
Assert.AreEqual("(0, 0)", Complex32.Zero.ToString(provider));
Assert.AreEqual("(" + String.Format("{0}", number) + ", 0)", new Complex32(1.1f, 0.0f).ToString(provider));
Assert.AreEqual("(" + String.Format("-{0}", number) + ", 0)", new Complex32(-1.1f, 0f).ToString(provider));
Assert.AreEqual("(0, " + String.Format("-{0}", number) + ")", new Complex32(0.0f, -1.1f).ToString(provider));
Assert.AreEqual("(0, " + String.Format("{0}", number) + ")", new Complex32(0.0f, 1.1f).ToString(provider));
Assert.AreEqual("(" + String.Format("{0}", number) + ", " + String.Format("{0}", number) + ")", new Complex32(1.1f, 1.1f).ToString(provider));
}
[Test]
[MultipleAsserts]
public void CanFormatComplexToStringWithFormat()
{
Assert.AreEqual("(0, 0)", String.Format("{0:G}", Complex32.Zero));
Assert.AreEqual("(1, 2)", String.Format("{0:G}", new Complex32(1, 2)));
Assert.AreEqual("(001, 002)", String.Format("{0:000;minus 000;zero}", new Complex32(1, 2)));
Assert.AreEqual("(zero, minus 002)", String.Format("{0:000;minus 000;zero}", new Complex32(0, -2)));
Assert.AreEqual("(zero, zero)", String.Format("{0:000;minus 000;zero}", Complex32.Zero));
Assert.AreEqual("(0, 0)", Complex32.Zero.ToString("G"));
Assert.AreEqual("(1, 2)", new Complex32(1, 2).ToString("G"));
Assert.AreEqual("(001, 002)", new Complex32(1, 2).ToString("#000;minus 000;zero"));
Assert.AreEqual("(zero, minus 002)", new Complex32(0, -2).ToString("#000;minus 000;zero"));
Assert.AreEqual("(zero, zero)", Complex32.Zero.ToString("#000;minus 000;zero"));
}
[Test]
[MultipleAsserts]
public void CanFormatComplexToStringWithFormatInvariant()
{
var culture = CultureInfo.InvariantCulture;
Assert.AreEqual("(NaN, NaN)", String.Format(culture, "{0:.000}", Complex32.NaN));
Assert.AreEqual("(.000, .000)", String.Format(culture, "{0:.000}", Complex32.Zero));
Assert.AreEqual("(1.100, .000)", String.Format(culture, "{0:.000}", new Complex32(1.1f, 0.0f)));
Assert.AreEqual("(1.100, 1.100)", String.Format(culture, "{0:.000}", new Complex32(1.1f, 1.1f)));
Assert.AreEqual("(NaN, NaN)", Complex32.NaN.ToString("#.000", culture));
Assert.AreEqual("(Infinity, Infinity)", Complex32.Infinity.ToString("#.000", culture));
Assert.AreEqual("(.000, .000)", Complex32.Zero.ToString("#.000", culture));
Assert.AreEqual("(1.100, .000)", new Complex32(1.1f, 0.0f).ToString("#.000", culture));
Assert.AreEqual("(.000, -1.100)", new Complex32(0.0f, -1.1f).ToString("#.000", culture));
Assert.AreEqual("(.000, 1.100)", new Complex32(0.0f, 1.1f).ToString("#.000", culture));
Assert.AreEqual("(1.100, 1.100)", new Complex32(1.1f, 1.1f).ToString("#.000", culture));
}
[Test]
[Row("-1 -2i", -1, -2, "en-US")]
[Row("-1 - 2i ", -1, -2, "de-CH")]
public void CanParseStringToComplexWithCulture(
string text, float expectedReal, float expectedImaginary, string cultureName)
{
Complex32 parsed = Complex32.Parse(text, CultureInfo.GetCultureInfo(cultureName));
Assert.AreEqual(expectedReal, parsed.Real);
Assert.AreEqual(expectedImaginary, parsed.Imaginary);
}
[Test]
[Row("1", 1, 0)]
[Row("-1", -1, 0)]
[Row("-i", 0, -1)]
[Row("i", 0, 1)]
[Row("2i", 0, 2)]
[Row("1 + 2i", 1, 2)]
[Row("1+2i", 1, 2)]
[Row("1 - 2i", 1, -2)]
[Row("1-2i", 1, -2)]
[Row("1,2 ", 1, 2)]
[Row("1 , 2", 1, 2)]
[Row("1,2i", 1, 2)]
[Row("-1, -2i", -1, -2)]
[Row(" - 1 , - 2 i ", -1, -2)]
[Row("(+1,2i)", 1, 2)]
[Row("(-1 , -2)", -1, -2)]
[Row("(-1 , -2i)", -1, -2)]
[Row("(+1e1 , -2e-2i)", 10, -0.02)]
[Row("(-1E1 -2e2i)", -10, -200)]
[Row("(-1e+1 -2e2i)", -10, -200)]
[Row("(-1e1 -2e+2i)", -10, -200)]
[Row("(-1e-1 -2E2i)", -0.1, -200)]
[Row("(-1e1 -2e-2i)", -10, -0.02)]
[Row("(-1E+1 -2e+2i)", -10, -200)]
[Row("(-1e-1,-2e-2i)", -0.1, -0.02)]
[Row("(+1 +2i)", 1, 2)]
[Row("(-1E+1 -2e+2i)", -10, -200)]
[Row("(-1e-1,-2e-2i)", -0.1, -0.02)]
public void CanTryParseStringToComplexWithInvariant(string str, float expectedReal, float expectedImaginary)
{
var invariantCulture = CultureInfo.InvariantCulture;
Complex32 z;
var ret = Complex32.TryParse(str, invariantCulture, out z);
Assert.IsTrue(ret);
Assert.AreEqual(expectedReal, z.Real);
Assert.AreEqual(expectedImaginary, z.Imaginary);
}
[Test]
public void ParseThrowsFormatExceptionIfMissingClosingParen()
{
Assert.Throws<FormatException>(() => Complex32.Parse("(1,2"));
}
[Test]
public void TryParseCanHandleSymbols()
{
Complex32 z;
var ni = NumberFormatInfo.CurrentInfo;
var separator = CultureInfo.CurrentCulture.TextInfo.ListSeparator;
var ret = Complex32.TryParse(
ni.NegativeInfinitySymbol + separator + ni.PositiveInfinitySymbol, out z);
Assert.IsTrue(ret, "A1");
Assert.AreEqual(float.NegativeInfinity, z.Real, "A2");
Assert.AreEqual(float.PositiveInfinity, z.Imaginary, "A3");
ret = Complex32.TryParse(ni.NaNSymbol + separator + ni.NaNSymbol, out z);
Assert.IsTrue(ret, "B1");
Assert.AreEqual(float.NaN, z.Real, "B2");
Assert.AreEqual(float.NaN, z.Imaginary, "B3");
ret = Complex32.TryParse(ni.NegativeInfinitySymbol + "+" + ni.PositiveInfinitySymbol + "i", out z);
Assert.IsTrue(ret, "C1");
Assert.AreEqual(float.NegativeInfinity, z.Real, "C2");
Assert.AreEqual(float.PositiveInfinity, z.Imaginary, "C3");
ret = Complex32.TryParse(ni.NaNSymbol + "+" + ni.NaNSymbol + "i", out z);
Assert.IsTrue(ret, "D1");
Assert.AreEqual(float.NaN, z.Real, "D2");
Assert.AreEqual(float.NaN, z.Imaginary, "D3");
ret = Complex32.TryParse(
float.MaxValue.ToString("R") + " " + float.MinValue.ToString("R") + "i",
out z);
Assert.IsTrue(ret, "E1");
Assert.AreEqual(float.MaxValue, z.Real, "E2");
Assert.AreEqual(float.MinValue, z.Imaginary, "E3");
}
[Test]
[Row("en-US")]
[Row("tr-TR")]
[Row("de-DE")]
[Row("de-CH")]
[Row("he-IL")]
public void TryParseCanHandleSymbolsWithCulture(string cultureName)
{
Complex32 z;
var culture = CultureInfo.GetCultureInfo(cultureName);
var ni = culture.NumberFormat;
var separator = culture.TextInfo.ListSeparator;
var ret = Complex32.TryParse(
ni.NegativeInfinitySymbol + separator + ni.PositiveInfinitySymbol, culture, out z);
Assert.IsTrue(ret, "A1");
Assert.AreEqual(float.NegativeInfinity, z.Real, "A2");
Assert.AreEqual(float.PositiveInfinity, z.Imaginary, "A3");
ret = Complex32.TryParse(ni.NaNSymbol + separator + ni.NaNSymbol, culture, out z);
Assert.IsTrue(ret, "B1");
Assert.AreEqual(float.NaN, z.Real, "B2");
Assert.AreEqual(float.NaN, z.Imaginary, "B3");
ret = Complex32.TryParse(ni.NegativeInfinitySymbol + "+" + ni.PositiveInfinitySymbol + "i", culture, out z);
Assert.IsTrue(ret, "C1");
Assert.AreEqual(float.NegativeInfinity, z.Real, "C2");
Assert.AreEqual(float.PositiveInfinity, z.Imaginary, "C3");
ret = Complex32.TryParse(ni.NaNSymbol + "+" + ni.NaNSymbol + "i", culture, out z);
Assert.IsTrue(ret, "D1");
Assert.AreEqual(float.NaN, z.Real, "D2");
Assert.AreEqual(float.NaN, z.Imaginary, "D3");
ret = Complex32.TryParse(
float.MaxValue.ToString("R", culture) + " " + float.MinValue.ToString("R", culture) + "i",
culture,
out z);
Assert.IsTrue(ret, "E1");
Assert.AreEqual(float.MaxValue, z.Real, "E2");
Assert.AreEqual(float.MinValue, z.Imaginary, "E3");
}
[Test]
[Row("")]
[Row("+")]
[Row("1-")]
[Row("i+")]
[Row("1/2i")]
[Row("1i+2i")]
[Row("i1i")]
[Row("(1i,2)")]
[Row("1e+")]
[Row("1e")]
[Row("1,")]
[Row(",1")]
[Row(null)]
[Row("()")]
[Row("( )")]
public void TryParseReturnsFalseWhenGivenBadValueWithInvariant(string str)
{
Complex32 z;
var ret = Complex32.TryParse(str, CultureInfo.InvariantCulture, out z);
Assert.IsFalse(ret);
Assert.AreEqual(0, z.Real);
Assert.AreEqual(0, z.Imaginary);
}
}
}