vendor: import KillerPDF 1.7.5 source (GPL-3.0) as the base for MMD PDF

2026-08-27 06:58:22 +02:00
commit 532485a830
577 changed files with 149058 additions and 0 deletions
@@ -0,0 +1,47 @@
+using KillerPDF.Services;
+using Xunit;
+
+namespace KillerPDF.Tests;
+
+public sealed class WheelPageFlipGateTests
+{
+    private static readonly DateTime Start = new(2026, 8, 22, 12, 0, 0, DateTimeKind.Utc);
+
+    [Fact]
+    public void TwoQuickNotchesAtEdge_ConfirmPageFlip()
+    {
+        var gate = new WheelPageFlipGate();
+
+        Assert.False(gate.TryConfirm(-120, Start));
+        Assert.True(gate.TryConfirm(-120, Start.AddMilliseconds(100)));
+    }
+
+    [Fact]
+    public void MomentumImmediatelyAfterContentScroll_DoesNotFlip()
+    {
+        var gate = new WheelPageFlipGate();
+        gate.NoteContentScroll(Start);
+
+        Assert.False(gate.TryConfirm(-120, Start.AddMilliseconds(50)));
+        Assert.False(gate.TryConfirm(-120, Start.AddMilliseconds(150)));
+    }
+
+    [Fact]
+    public void OppositeDirection_RestartsConfirmation()
+    {
+        var gate = new WheelPageFlipGate();
+
+        Assert.False(gate.TryConfirm(-120, Start));
+        Assert.False(gate.TryConfirm(120, Start.AddMilliseconds(100)));
+        Assert.True(gate.TryConfirm(120, Start.AddMilliseconds(200)));
+    }
+
+    [Fact]
+    public void SlowNotches_DoNotCombineIntoPageFlip()
+    {
+        var gate = new WheelPageFlipGate();
+
+        Assert.False(gate.TryConfirm(-120, Start));
+        Assert.False(gate.TryConfirm(-120, Start.AddMilliseconds(700)));
+    }
+}