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Throw if interval with reversed values added

May reduce in subtle bugs.
This commit is contained in:
Salman Ahmed 2020-04-10 15:49:06 +03:00
parent 1001fcfb94
commit b7ed17dfbd
2 changed files with 10 additions and 35 deletions

View File

@ -1,6 +1,7 @@
// 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 NUnit.Framework;
using osu.Game.Lists;
@ -14,7 +15,7 @@ namespace osu.Game.Tests.Lists
{
(-9.1d, -8.3d),
(-3.4d, 2.1d),
(50.0d, 9.0d), // intentionally reversing interval.
(9.0d, 50.0d),
(5.25d, 10.50d),
};
@ -103,39 +104,12 @@ namespace osu.Game.Tests.Lists
}
[Test]
public void TestCheckIntervalIndexOnChecks()
public void TestReversedIntervalThrows()
{
var list = new TestIntervalList { { 1.0d, 2.0d }, { 3.0d, 4.0d }, { 5.0d, 6.0d }, { 7.0d, 8.0d } };
var list = new IntervalList<int>();
Assert.IsTrue(list.IsInAnyInterval(1.5d));
Assert.IsTrue(list.NearestIntervalIndex == 0);
Assert.IsTrue(list.IsInAnyInterval(5.5d));
Assert.IsTrue(list.NearestIntervalIndex == 2);
Assert.IsTrue(list.IsInAnyInterval(7.5d));
Assert.IsTrue(list.NearestIntervalIndex == 3);
}
[Test]
public void TestCheckIntervalIndexOnOutOfIntervalsChecks()
{
var list = new TestIntervalList { { 1.0d, 2.0d }, { 3.0d, 4.0d }, { 5.0d, 6.0d }, { 7.0d, 8.0d } };
Assert.IsFalse(list.IsInAnyInterval(4.5d));
Assert.IsTrue(list.NearestIntervalIndex == 1 ||
list.NearestIntervalIndex == 2); // 4.5 in between 3.0-4.0 and 5.0-6.0
Assert.IsFalse(list.IsInAnyInterval(9.0d));
Assert.IsTrue(list.NearestIntervalIndex == 3); // 9.0 goes above 7.0-8.0
Assert.IsFalse(list.IsInAnyInterval(0.0d));
Assert.IsTrue(list.NearestIntervalIndex == 0); // 0.0 goes below 1.0-2.0
}
private class TestIntervalList : IntervalList<double>
{
public new int NearestIntervalIndex => base.NearestIntervalIndex;
Assert.Throws<ArgumentException>(() => list.Add(50, 25));
Assert.Throws<ArgumentException>(() => list.Add(new Interval<int>(50, 25)));
}
}
}

View File

@ -116,10 +116,11 @@ namespace osu.Game.Lists
public Interval(T start, T end)
{
bool startLessThanEnd = Comparer<T>.Default.Compare(start, end) < 0;
if (Comparer<T>.Default.Compare(start, end) >= 0)
throw new ArgumentException($"Invalid interval, {nameof(start)} must be less than {nameof(end)}", nameof(start));
Start = startLessThanEnd ? start : end;
End = startLessThanEnd ? end : start;
Start = start;
End = end;
}
}
}