From ea6be25a9021ddec7be9f81dd4ea6e6293e89cc4 Mon Sep 17 00:00:00 2001
From: Julien Couvreur <jcouv@users.noreply.github.com>
Date: Mon, 19 Nov 2018 16:20:46 -0800
Subject: [PATCH] Verify formatting of #nullable (#31241)

---
 .../Formatting/FormattingTriviaTests.cs       | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/Workspaces/CSharpTest/Formatting/FormattingTriviaTests.cs b/src/Workspaces/CSharpTest/Formatting/FormattingTriviaTests.cs
index 6ffd7576860..a62c881dee0 100644
--- a/src/Workspaces/CSharpTest/Formatting/FormattingTriviaTests.cs
+++ b/src/Workspaces/CSharpTest/Formatting/FormattingTriviaTests.cs
@@ -11,6 +11,34 @@ namespace Microsoft.CodeAnalysis.CSharp.UnitTests.Formatting
 {
     public class FormattingEngineTriviaTests : CSharpFormattingTestBase
     {
+        [Fact, Trait(Traits.Feature, Traits.Features.Formatting)]
+        [WorkItem(31130, "https://github.com/dotnet/roslyn/issues/31130")]
+        public async Task PreprocessorNullable()
+        {
+            var content = @"
+    #nullable
+class C
+{
+    #nullable     enable
+    void Method()
+    {
+        #nullable    disable
+    }
+}";
+
+            var expected = @"
+#nullable
+class C
+{
+#nullable enable
+    void Method()
+    {
+#nullable disable
+    }
+}";
+            await AssertFormatAsync(expected, content);
+        }
+
         [Fact, Trait(Traits.Feature, Traits.Features.Formatting)]
         public async Task PreprocessorInEmptyFile()
         {
-- 
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