diff --git a/osu.Game.Rulesets.Mania.Tests/ManiaDifficultyCalculatorTest.cs b/osu.Game.Rulesets.Mania.Tests/ManiaDifficultyCalculatorTest.cs
new file mode 100644
index 0000000000..05e2df796c
--- /dev/null
+++ b/osu.Game.Rulesets.Mania.Tests/ManiaDifficultyCalculatorTest.cs
@@ -0,0 +1,24 @@
+// 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 NUnit.Framework;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Difficulty;
+using osu.Game.Rulesets.Mania.Difficulty;
+using osu.Game.Tests.Beatmaps;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    public class ManiaDifficultyCalculatorTest : DifficultyCalculatorTest
+    {
+        protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";
+
+        [TestCase(2.2676066895468976, "diffcalc-test")]
+        public void Test(double expected, string name)
+            => base.Test(expected, name);
+
+        protected override DifficultyCalculator CreateDifficultyCalculator(WorkingBeatmap beatmap) => new ManiaDifficultyCalculator(new ManiaRuleset(), beatmap);
+
+        protected override Ruleset CreateRuleset() => new ManiaRuleset();
+    }
+}
diff --git a/osu.Game.Rulesets.Mania/Resources/Testing/Beatmaps/diffcalc-test.osu b/osu.Game.Rulesets.Mania/Resources/Testing/Beatmaps/diffcalc-test.osu
new file mode 100644
index 0000000000..4c877c6193
--- /dev/null
+++ b/osu.Game.Rulesets.Mania/Resources/Testing/Beatmaps/diffcalc-test.osu
@@ -0,0 +1,180 @@
+osu file format v14
+
+[General]
+Mode: 3
+
+[Difficulty]
+CircleSize:4
+OverallDifficulty:7
+ApproachRate:8.3
+SliderMultiplier:1.6
+SliderTickRate:1
+
+[TimingPoints]
+500,500,4,2,1,50,1,0
+37500,-50,4,2,1,50,0,0
+41500,-25,4,2,1,50,0,0
+
+[HitObjects]
+// jacks spaced 1/1 beat apart
+64,192,0,1,0,0:0:0:0:
+64,192,500,1,0,0:0:0:0:
+64,192,1000,1,0,0:0:0:0:
+64,192,1500,1,0,0:0:0:0:
+64,192,2000,1,0,0:0:0:0:
+64,192,2500,1,0,0:0:0:0:
+
+// jacks spaced 1/2 beat apart
+64,192,3500,1,0,0:0:0:0:
+64,192,3750,1,0,0:0:0:0:
+64,192,4000,1,0,0:0:0:0:
+64,192,4250,1,0,0:0:0:0:
+64,192,4500,1,0,0:0:0:0:
+64,192,4750,1,0,0:0:0:0:
+64,192,5000,1,0,0:0:0:0:
+64,192,6000,1,0,0:0:0:0:
+
+// doubles jacks spaced 1/2 beat apart
+192,192,6000,1,0,0:0:0:0:
+64,192,6250,1,0,0:0:0:0:
+192,192,6250,1,0,0:0:0:0:
+64,192,6500,1,0,0:0:0:0:
+192,192,6500,1,0,0:0:0:0:
+64,192,6750,1,0,0:0:0:0:
+192,192,6750,1,0,0:0:0:0:
+64,192,7000,1,0,0:0:0:0:
+192,192,7000,1,0,0:0:0:0:
+64,192,7250,1,0,0:0:0:0:
+192,192,7250,1,0,0:0:0:0:
+64,192,7500,1,0,0:0:0:0:
+192,192,7500,1,0,0:0:0:0:
+
+// trill spaced 1/2 beat apart
+64,192,8500,1,0,0:0:0:0:
+192,192,8750,1,0,0:0:0:0:
+64,192,9000,1,0,0:0:0:0:
+192,192,9250,1,0,0:0:0:0:
+64,192,9500,1,0,0:0:0:0:
+192,192,9750,1,0,0:0:0:0:
+64,192,10000,1,0,0:0:0:0:
+192,192,10250,1,0,0:0:0:0:
+64,192,10500,1,0,0:0:0:0:
+
+// stair spaced 1/4 apart
+64,192,11500,1,0,0:0:0:0:
+192,192,11625,1,0,0:0:0:0:
+320,192,11750,1,0,0:0:0:0:
+448,192,11875,1,0,0:0:0:0:
+320,192,12000,1,0,0:0:0:0:
+192,192,12125,1,0,0:0:0:0:
+64,192,12250,1,0,0:0:0:0:
+192,192,12375,1,0,0:0:0:0:
+320,192,12500,1,0,0:0:0:0:
+448,192,12625,1,0,0:0:0:0:
+
+// jumpstreams?
+64,192,13500,1,0,0:0:0:0:
+192,192,13625,1,0,0:0:0:0:
+320,192,13750,1,0,0:0:0:0:
+448,192,13875,1,0,0:0:0:0:
+320,192,14000,1,0,0:0:0:0:
+192,192,14000,1,0,0:0:0:0:
+64,192,14125,1,0,0:0:0:0:
+192,192,14250,1,0,0:0:0:0:
+320,192,14250,1,0,0:0:0:0:
+448,192,14250,1,0,0:0:0:0:
+64,192,14375,1,0,0:0:0:0:
+64,192,14500,1,0,0:0:0:0:
+320,192,14625,1,0,0:0:0:0:
+448,192,14625,1,0,0:0:0:0:
+192,192,14625,1,0,0:0:0:0:
+192,192,14750,1,0,0:0:0:0:
+64,192,14875,1,0,0:0:0:0:
+192,192,15000,1,0,0:0:0:0:
+320,192,15125,1,0,0:0:0:0:
+448,192,15125,1,0,0:0:0:0:
+
+// double... jumps?
+64,192,16000,1,0,0:0:0:0:
+64,192,16250,1,0,0:0:0:0:
+192,192,16250,1,0,0:0:0:0:
+192,192,16500,1,0,0:0:0:0:
+320,192,16500,1,0,0:0:0:0:
+320,192,16750,1,0,0:0:0:0:
+448,192,16750,1,0,0:0:0:0:
+448,192,17000,1,0,0:0:0:0:
+
+// notes alongside hold
+64,192,18000,128,0,18500:0:0:0:0:
+192,192,18000,1,0,0:0:0:0:
+192,192,18250,1,0,0:0:0:0:
+192,192,18500,1,0,0:0:0:0:
+
+// notes overlapping hold
+64,192,19500,1,0,0:0:0:0:
+192,192,19625,128,0,20875:0:0:0:0:
+64,192,19750,1,0,0:0:0:0:
+64,192,20000,1,0,0:0:0:0:
+64,192,20250,1,0,0:0:0:0:
+64,192,20500,1,0,0:0:0:0:
+64,192,20750,1,0,0:0:0:0:
+64,192,21000,1,0,0:0:0:0:
+
+// simultaneous holds
+64,192,22000,128,0,23000:0:0:0:0:
+192,192,22000,128,0,23000:0:0:0:0:
+320,192,22000,128,0,23000:0:0:0:0:
+448,192,22000,128,0,23000:0:0:0:0:
+
+// hold stairs
+64,192,24500,128,0,25500:0:0:0:0:
+192,192,24625,128,0,25375:0:0:0:0:
+320,192,24750,128,0,25250:0:0:0:0:
+448,192,24875,128,0,25125:0:0:0:0:
+448,192,25375,128,0,26375:0:0:0:0:
+320,192,25500,128,0,26250:0:0:0:0:
+192,192,25625,128,0,26125:0:0:0:0:
+64,192,25750,128,0,26000:0:0:0:0:
+
+// quads
+64,192,26500,1,0,0:0:0:0:
+64,192,27500,1,0,0:0:0:0:
+192,192,27500,1,0,0:0:0:0:
+320,192,27500,1,0,0:0:0:0:
+448,192,27500,1,0,0:0:0:0:
+64,192,27750,1,0,0:0:0:0:
+192,192,27750,1,0,0:0:0:0:
+320,192,27750,1,0,0:0:0:0:
+448,192,27750,1,0,0:0:0:0:
+64,192,28000,1,0,0:0:0:0:
+192,192,28000,1,0,0:0:0:0:
+320,192,28000,1,0,0:0:0:0:
+448,192,28000,1,0,0:0:0:0:
+64,192,28250,1,0,0:0:0:0:
+192,192,28250,1,0,0:0:0:0:
+320,192,28250,1,0,0:0:0:0:
+448,192,28250,1,0,0:0:0:0:
+64,192,28500,1,0,0:0:0:0:
+192,192,28500,1,0,0:0:0:0:
+320,192,28500,1,0,0:0:0:0:
+448,192,28500,1,0,0:0:0:0:
+
+// double-trills
+64,192,29500,1,0,0:0:0:0:
+192,192,29500,1,0,0:0:0:0:
+320,192,29625,1,0,0:0:0:0:
+448,192,29625,1,0,0:0:0:0:
+64,192,29750,1,0,0:0:0:0:
+192,192,29750,1,0,0:0:0:0:
+320,192,29875,1,0,0:0:0:0:
+448,192,29875,1,0,0:0:0:0:
+64,192,30000,1,0,0:0:0:0:
+192,192,30000,1,0,0:0:0:0:
+320,192,30125,1,0,0:0:0:0:
+448,192,30125,1,0,0:0:0:0:
+64,192,30250,1,0,0:0:0:0:
+192,192,30250,1,0,0:0:0:0:
+320,192,30375,1,0,0:0:0:0:
+448,192,30375,1,0,0:0:0:0:
+64,192,30500,1,0,0:0:0:0:
+192,192,30500,1,0,0:0:0:0: