From 1be3851154aec9e73dfc099a62e51ac7754d3906 Mon Sep 17 00:00:00 2001
From: Tig <tig@users.noreply.github.com>
Date: Thu, 7 Mar 2024 09:04:24 -0700
Subject: [PATCH] Started on unit test

---
 UnitTests/TestHelpers.cs           |  7 +++++++
 UnitTests/View/DiagnosticsTests.cs | 29 +++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 UnitTests/View/DiagnosticsTests.cs

diff --git a/UnitTests/TestHelpers.cs b/UnitTests/TestHelpers.cs
index 8de81cb35..273bc9807 100644
--- a/UnitTests/TestHelpers.cs
+++ b/UnitTests/TestHelpers.cs
@@ -69,6 +69,9 @@ public class AutoInitShutdownAttribute : BeforeAfterTestAttribute
     {
         Debug.WriteLine ($"After: {methodUnderTest.Name}");
 
+        // Turn off diagnostic flags in case some test left them on
+        View.Diagnostics = ViewDiagnosticFlags.Off;
+
         if (AutoInit)
         {
             Application.Shutdown ();
@@ -145,6 +148,10 @@ public class SetupFakeDriverAttribute : BeforeAfterTestAttribute
     public override void After (MethodInfo methodUnderTest)
     {
         Debug.WriteLine ($"After: {methodUnderTest.Name}");
+
+        // Turn off diagnostic flags in case some test left them on
+        View.Diagnostics = ViewDiagnosticFlags.Off;
+
         Application.Driver = null;
     }
 
diff --git a/UnitTests/View/DiagnosticsTests.cs b/UnitTests/View/DiagnosticsTests.cs
new file mode 100644
index 000000000..87eaaf0ad
--- /dev/null
+++ b/UnitTests/View/DiagnosticsTests.cs
@@ -0,0 +1,29 @@
+#nullable enable
+using Xunit.Abstractions;
+
+namespace Terminal.Gui.ViewTests;
+
+/// <summary>
+/// Tests <see cref="View.Diagnostics"/> static property and <see cref="ViewDiagnosticFlags"/> enum.
+/// </summary>
+/// <param name="output"></param>
+[Trait("Category","Output")]
+public class DiagnosticTests (ITestOutputHelper output)
+{
+    /// <summary>
+    ///    /// Tests <see cref="View.Diagnostics"/> static property and <see cref="ViewDiagnosticFlags"/> enum.
+    ///    /// </summary>
+    [Fact]
+    public void Diagnostics_Sets ()
+    {
+        // View.Diagnostics is a static property that returns the current diagnostic flags.
+        Assert.Equal (ViewDiagnosticFlags.Off, View.Diagnostics);
+    
+        // View.Diagnostics can be set to a new value.
+        View.Diagnostics = ViewDiagnosticFlags.Padding;
+        Assert.Equal (ViewDiagnosticFlags.Padding, View.Diagnostics);
+
+        // Ensure we turn off at the end of the test
+        View.Diagnostics = ViewDiagnosticFlags.Off;
+    }
+}