From d8ec2a8bfec91e8aee7fb1450f16e2f0fe841d9d Mon Sep 17 00:00:00 2001
From: BDisp <bd.bdisp@gmail.com>
Date: Mon, 13 May 2024 14:39:41 +0100
Subject: [PATCH] Fixes #3475. FakeConsole throws
 System.IndexOutOfRangeException using SetupFakeDriverAttribute.

---
 .../ConsoleDrivers/FakeDriver/FakeDriver.cs   | 22 +++++++++++++++++++
 UnitTests/TestHelpers.cs                      |  2 ++
 2 files changed, 24 insertions(+)

diff --git a/Terminal.Gui/ConsoleDrivers/FakeDriver/FakeDriver.cs b/Terminal.Gui/ConsoleDrivers/FakeDriver/FakeDriver.cs
index 74328a818..1155a2846 100644
--- a/Terminal.Gui/ConsoleDrivers/FakeDriver/FakeDriver.cs
+++ b/Terminal.Gui/ConsoleDrivers/FakeDriver/FakeDriver.cs
@@ -40,6 +40,28 @@ public class FakeDriver : ConsoleDriver
     public static Behaviors FakeBehaviors = new ();
     public override bool SupportsTrueColor => false;
 
+    /// <inheritdoc />
+    public override int Cols
+    {
+        get => base.Cols;
+        internal set
+        {
+            base.Cols = value;
+            FakeConsole.SetBufferSize (Cols, Rows);
+        }
+    }
+
+    /// <inheritdoc />
+    public override int Rows
+    {
+        get => base.Rows;
+        internal set
+        {
+            base.Rows = value;
+            FakeConsole.SetBufferSize (Cols, Rows);
+        }
+    }
+
     public FakeDriver ()
     {
         Cols = FakeConsole.WindowWidth = FakeConsole.BufferWidth = FakeConsole.WIDTH;
diff --git a/UnitTests/TestHelpers.cs b/UnitTests/TestHelpers.cs
index 32b68eb37..d0444ea68 100644
--- a/UnitTests/TestHelpers.cs
+++ b/UnitTests/TestHelpers.cs
@@ -171,6 +171,8 @@ public class SetupFakeDriverAttribute : BeforeAfterTestAttribute
         Debug.WriteLine ($"Before: {methodUnderTest.Name}");
         Assert.Null (Application.Driver);
         Application.Driver = new FakeDriver { Rows = 25, Cols = 25 };
+        Assert.Equal (FakeConsole.BufferWidth, Application.Driver.Cols);
+        Assert.Equal (FakeConsole.BufferHeight, Application.Driver.Rows);
         base.Before (methodUnderTest);
     }
 }