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osu-lazer/osu.Game/Tests/Beatmaps/DifficultyCalculatorTest.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.
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#nullable disable
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using System;
using System.IO;
using System.Reflection;
using NUnit.Framework;
using osu.Framework.Extensions.ObjectExtensions;
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using osu.Game.Beatmaps;
using osu.Game.Beatmaps.Formats;
using osu.Game.IO;
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using osu.Game.Rulesets;
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using osu.Game.Rulesets.Difficulty;
using osu.Game.Rulesets.Mods;
namespace osu.Game.Tests.Beatmaps
{
[TestFixture]
public abstract class DifficultyCalculatorTest
{
private const string resource_namespace = "Testing.Beatmaps";
protected abstract string ResourceAssembly { get; }
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protected void Test(double expectedStarRating, int expectedMaxCombo, string name, params Mod[] mods)
{
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var attributes = CreateDifficultyCalculator(getBeatmap(name)).Calculate(mods);
// Platform-dependent math functions (Pow, Cbrt, Exp, etc) may result in minute differences.
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Assert.That(attributes.StarRating, Is.EqualTo(expectedStarRating).Within(0.00001));
Assert.That(attributes.MaxCombo, Is.EqualTo(expectedMaxCombo));
}
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private IWorkingBeatmap getBeatmap(string name)
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{
using (var resStream = openResource($"{resource_namespace}.{name}.osu"))
using (var stream = new LineBufferedReader(resStream))
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{
var decoder = Decoder.GetDecoder<Beatmap>(stream);
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((LegacyBeatmapDecoder)decoder).ApplyOffsets = false;
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return new TestWorkingBeatmap(decoder.Decode(stream))
{
BeatmapInfo =
{
Ruleset = CreateRuleset().RulesetInfo
}
};
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}
}
private Stream openResource(string name)
{
string localPath = Path.GetDirectoryName(Uri.UnescapeDataString(new UriBuilder(Assembly.GetExecutingAssembly().CodeBase).Path)).AsNonNull();
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return Assembly.LoadFrom(Path.Combine(localPath, $"{ResourceAssembly}.dll")).GetManifestResourceStream($@"{ResourceAssembly}.Resources.{name}");
}
protected abstract DifficultyCalculator CreateDifficultyCalculator(IWorkingBeatmap beatmap);
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protected abstract Ruleset CreateRuleset();
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}
}