Updating test and Ratio calculation

src/Spectre.Console/Internal/Ratio.cs

@@ -9,7 +9,17 @@ internal static class Ratio
     {
         static (int Div, float Mod) DivMod(float x, float y)
         {
-            return ((int)(x / y), x % y);
+            var (div, mod) = ((int)(x / y), x % y);
+
+            // If remainder is withing .0001 of 1 then we round up
+            if (!(mod > 0.9999))
+            {
+                return (div, mod);
+            }
+
+            div++;
+            mod = 0;
+            return (div, mod);
         }
 
         static int? GetEdgeWidth(IRatioResolvable edge)
@@ -46,7 +56,8 @@ internal static class Ratio
                     .ToList();
             }
 
-            var portion = (float)remaining / flexibleEdges.Sum(x => Math.Max(1, x.Edge.Ratio));
+            var r = flexibleEdges.Sum(x => Math.Max(1, x.Edge.Ratio));
+            var portion = (float)remaining / r;
 
             var invalidate = false;
             foreach (var (index, size, edge) in flexibleEdges)

src/Spectre.Console/Rendering/Segment.cs

@@ -463,8 +463,14 @@ public class Segment
         var result = new List<Segment>();
 
         var segmentBuilder = (SegmentBuilder?)null;
+        var c = 0;
         foreach (var segment in segments)
         {
+            if (c == 163)
+            {
+                System.Console.Write("test");
+            }
+            c++;
             if (segmentBuilder == null)
             {
                 segmentBuilder = new SegmentBuilder(segment);

test/Spectre.Console.Tests/Unit/Widgets/LayoutTests.cs

@@ -264,4 +264,37 @@ public sealed class LayoutTests
         // Then
         return Verifier.Verify(console.Output);
     }
+
+    [Fact]
+    [Expectation("Render_Layout_With_Three_And_One_Columns")]
+    public Task Should_Render_Layout_With_Three_And_One_Columns()
+    {
+        // Given
+        var console = new TestConsole().Size(new Size(40, 17));
+        var layout = new Layout();
+        var col1 = new Layout();
+        var col1Row1 = new Layout();
+        var col1Row2 = new Layout();
+        var col1Row3 = new Layout();
+
+        col1.SplitRows(col1Row1, col1Row2, col1Row3);
+
+        var col2 = new Layout();
+
+        layout.SplitColumns(col1, col2);
+
+        var panel = new Panel("Hello, World!") { Expand = true };
+
+        List<Layout> layouts = [col1Row1, col1Row2, col1Row3, col2];
+        foreach (var l in layouts)
+        {
+            l.Update(panel);
+        }
+
+        // When
+        console.Write(layout);
+
+        // Then
+        return Verifier.Verify(console.Output);
+    }
 }