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osu-lazer/osu.Game.Tests/Beatmaps/Formats/ParsingTest.cs
2019-11-12 20:03:21 +08:00

73 lines
2.7 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System;
using System.Globalization;
using NUnit.Framework;
using osu.Game.Beatmaps.Formats;
namespace osu.Game.Tests.Beatmaps.Formats
{
[TestFixture]
public class ParsingTest
{
[Test]
public void TestNaNHandling() => allThrow<FormatException>("NaN");
[Test]
public void TestBadStringHandling() => allThrow<FormatException>("Random string 123");
[TestCase(Parsing.MAX_PARSE_VALUE)]
[TestCase(-1)]
[TestCase(0)]
[TestCase(1)]
[TestCase(-Parsing.MAX_PARSE_VALUE)]
[TestCase(10, 10)]
[TestCase(-10, 10)]
public void TestValidRanges(double input, double limit = Parsing.MAX_PARSE_VALUE)
{
Assert.AreEqual(Parsing.ParseInt((input).ToString(CultureInfo.InvariantCulture), (int)limit), (int)input);
Assert.AreEqual(Parsing.ParseFloat((input).ToString(CultureInfo.InvariantCulture), (float)limit), (float)input);
Assert.AreEqual(Parsing.ParseDouble((input).ToString(CultureInfo.InvariantCulture), limit), input);
}
[TestCase(double.PositiveInfinity)]
[TestCase(double.NegativeInfinity)]
[TestCase(999999999999)]
[TestCase(Parsing.MAX_PARSE_VALUE * 1.1)]
[TestCase(-Parsing.MAX_PARSE_VALUE * 1.1)]
[TestCase(11, 10)]
[TestCase(-11, 10)]
public void TestOutOfRangeHandling(double input, double limit = Parsing.MAX_PARSE_VALUE)
=> allThrow<OverflowException>(input.ToString(CultureInfo.InvariantCulture), limit);
private void allThrow<T>(string input, double limit = Parsing.MAX_PARSE_VALUE)
where T : Exception
{
Assert.Throws(getIntParseException(input) ?? typeof(T), () => Parsing.ParseInt(input, (int)limit));
Assert.Throws<T>(() => Parsing.ParseFloat(input, (float)limit));
Assert.Throws<T>(() => Parsing.ParseDouble(input, limit));
}
/// <summary>
/// <see cref="int"/> may not be able to parse some inputs.
/// In this case we expect to receive the raw parsing exception.
/// </summary>
/// <param name="input">The input attempting to be parsed.</param>
/// <returns>The type of exception thrown by <see cref="int.Parse(string)"/>. Null if no exception is thrown.</returns>
private Type getIntParseException(string input)
{
try
{
_ = int.Parse(input);
}
catch (Exception e)
{
return e.GetType();
}
return null;
}
}
}