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osu-lazer/osu.Game.Tests/Mods/ModDifficultyAdjustTest.cs

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// 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.Collections.Generic;
using NUnit.Framework;
using osu.Game.Beatmaps;
using osu.Game.Online.API;
using osu.Game.Rulesets;
using osu.Game.Rulesets.Difficulty;
using osu.Game.Rulesets.Mods;
using osu.Game.Rulesets.UI;
namespace osu.Game.Tests.Mods
{
[TestFixture]
public class ModDifficultyAdjustTest
{
private TestModDifficultyAdjust testMod;
[SetUp]
public void Setup()
{
testMod = new TestModDifficultyAdjust();
}
[Test]
public void TestUnchangedSettingsFollowAppliedDifficulty()
{
var result = applyDifficulty(new BeatmapDifficulty
{
DrainRate = 10,
OverallDifficulty = 10
});
Assert.That(result.DrainRate, Is.EqualTo(10));
Assert.That(result.OverallDifficulty, Is.EqualTo(10));
result = applyDifficulty(new BeatmapDifficulty
{
DrainRate = 1,
OverallDifficulty = 1
});
Assert.That(result.DrainRate, Is.EqualTo(1));
Assert.That(result.OverallDifficulty, Is.EqualTo(1));
}
[Test]
public void TestChangedSettingsOverrideAppliedDifficulty()
{
testMod.OverallDifficulty.Value = 4;
var result = applyDifficulty(new BeatmapDifficulty
{
DrainRate = 10,
OverallDifficulty = 10
});
Assert.That(result.DrainRate, Is.EqualTo(10));
Assert.That(result.OverallDifficulty, Is.EqualTo(4));
result = applyDifficulty(new BeatmapDifficulty
{
DrainRate = 1,
OverallDifficulty = 1
});
Assert.That(result.DrainRate, Is.EqualTo(1));
Assert.That(result.OverallDifficulty, Is.EqualTo(4));
}
[Test]
public void TestChangedSettingsRetainedWhenSameValueIsApplied()
{
testMod.OverallDifficulty.Value = 4;
// Apply and de-apply the same value as the mod.
applyDifficulty(new BeatmapDifficulty { OverallDifficulty = 4 });
var result = applyDifficulty(new BeatmapDifficulty { OverallDifficulty = 10 });
Assert.That(result.OverallDifficulty, Is.EqualTo(4));
}
[Test]
public void TestChangedSettingSerialisedWhenSameValueIsApplied()
{
applyDifficulty(new BeatmapDifficulty { OverallDifficulty = 4 });
testMod.OverallDifficulty.Value = 4;
var result = (TestModDifficultyAdjust)new APIMod(testMod).ToMod(new TestRuleset());
Assert.That(result.OverallDifficulty.Value, Is.EqualTo(4));
}
[Test]
public void TestChangedSettingsRevertedToDefault()
{
applyDifficulty(new BeatmapDifficulty
{
DrainRate = 10,
OverallDifficulty = 10
});
testMod.OverallDifficulty.Value = 4;
testMod.ResetSettingsToDefaults();
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Assert.That(testMod.DrainRate.Value, Is.Null);
// ReSharper disable once HeuristicUnreachableCode
// see https://youtrack.jetbrains.com/issue/RIDER-70159.
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Assert.That(testMod.OverallDifficulty.Value, Is.Null);
var applied = applyDifficulty(new BeatmapDifficulty
{
DrainRate = 10,
OverallDifficulty = 10
});
Assert.That(applied.OverallDifficulty, Is.EqualTo(10));
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}
/// <summary>
/// Applies a <see cref="BeatmapDifficulty"/> to the mod and returns a new <see cref="BeatmapDifficulty"/>
/// representing the result if the mod were applied to a fresh <see cref="BeatmapDifficulty"/> instance.
/// </summary>
private BeatmapDifficulty applyDifficulty(BeatmapDifficulty difficulty)
{
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// ensure that ReadFromDifficulty doesn't pollute the values.
var newDifficulty = difficulty.Clone();
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testMod.ReadFromDifficulty(difficulty);
testMod.ApplyToDifficulty(newDifficulty);
return newDifficulty;
}
private class TestModDifficultyAdjust : ModDifficultyAdjust
{
}
private class TestRuleset : Ruleset
{
public override IEnumerable<Mod> GetModsFor(ModType type)
{
if (type == ModType.DifficultyIncrease)
yield return new TestModDifficultyAdjust();
}
public override DrawableRuleset CreateDrawableRulesetWith(IBeatmap beatmap, IReadOnlyList<Mod> mods = null)
{
throw new System.NotImplementedException();
}
public override IBeatmapConverter CreateBeatmapConverter(IBeatmap beatmap)
{
throw new System.NotImplementedException();
}
public override DifficultyCalculator CreateDifficultyCalculator(IWorkingBeatmap beatmap)
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{
throw new System.NotImplementedException();
}
public override string Description => string.Empty;
public override string ShortName => string.Empty;
}
}
}