engine: pin retained glyph text contract

engine/Age.Engine.Tests/AdvRetainedTextContractTests.cs

@@ -0,0 +1,55 @@
+using Age.Engine.Model;
+
+public class AdvRetainedTextContractTests
+{
+    [Fact]
+    public void GlyphRecordUsesNativeEdgesAndExactChainFlag()
+    {
+        var chained = new AdvRetainedGlyphRecord(1, 10, 20, 34, 51);
+        var nonChained = chained with { PublicationChainFlag = 2 };
+
+        Assert.Equal((24, 31), (chained.Width, chained.Height));
+        Assert.True(chained.PublishesNextInSameTick);
+        Assert.False(nonChained.PublishesNextInSameTick);
+    }
+
+    [Fact]
+    public void OverflowComparisonsAreStrictAndIndependentPerAxis()
+    {
+        Assert.Equal(
+            AdvTextOverflowFlags.None,
+            AdvRetainedTextContract.CheckOverflow(100, 50, 100, 50));
+        Assert.Equal(
+            AdvTextOverflowFlags.Horizontal,
+            AdvRetainedTextContract.CheckOverflow(100, 50, 101, 50));
+        Assert.Equal(
+            AdvTextOverflowFlags.Vertical,
+            AdvRetainedTextContract.CheckOverflow(100, 50, 100, 51));
+        Assert.Equal(
+            AdvTextOverflowFlags.Horizontal | AdvTextOverflowFlags.Vertical,
+            AdvRetainedTextContract.CheckOverflow(100, 50, 101, 51));
+    }
+
+    [Theory]
+    [InlineData(0x8141)] // 、
+    [InlineData(0x8142)] // 。
+    [InlineData(0x8176)] // 」
+    public void NativeClosingPunctuationPreventsHorizontalWrapBefore(int cp932)
+        => Assert.True(AdvRetainedTextContract.PreventsHorizontalWrapBefore((ushort)cp932));
+
+    [Fact]
+    public void OtherCp932GlyphsMayWrapNormally()
+    {
+        Assert.False(AdvRetainedTextContract.PreventsHorizontalWrapBefore(0x8140)); // full-width space
+        Assert.False(AdvRetainedTextContract.PreventsHorizontalWrapBefore(0x82a0)); // あ
+    }
+
+    [Fact]
+    public void TimedPublicationStopsAtConfiguredObjectCapacity()
+    {
+        Assert.True(AdvRetainedTextContract.TimedPublicationHandleExists(0, 500));
+        Assert.True(AdvRetainedTextContract.TimedPublicationHandleExists(499, 500));
+        Assert.False(AdvRetainedTextContract.TimedPublicationHandleExists(500, 500));
+        Assert.False(AdvRetainedTextContract.TimedPublicationHandleExists(-1, 500));
+    }
+}