From 98308f9f41165c3f0b2eceff1263f934cef0e497 Mon Sep 17 00:00:00 2001
From: Cyrus Najmabadi <cyrus.najmabadi@gmail.com>
Date: Tue, 17 Jul 2018 16:21:07 -0700
Subject: [PATCH] Add negative test.

---
 .../SuggestionModeCompletionProviderTests.cs  | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SuggestionModeCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SuggestionModeCompletionProviderTests.cs
index f7dca463d3a..2f3dc269ea1 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SuggestionModeCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SuggestionModeCompletionProviderTests.cs
@@ -1067,6 +1067,38 @@ public static void ReproMethod(Goo goo)
             await VerifyBuilderAsync(markup);
         }
 
+        [WorkItem(28586, "https://github.com/dotnet/roslyn/issues/28586")]
+        [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
+        public async Task WithNonDelegateExtensionAndInstanceMethod1()
+        {
+            var markup = @"
+using System;
+
+public sealed class Goo
+{
+    public void Bar()
+    {
+    }
+}
+
+public static class GooExtensions
+{
+    public static void Bar(this Goo goo, int val)
+    {
+    }
+}
+
+public static class Repro
+{
+    public static void ReproMethod(Goo goo)
+    {
+        goo.Bar(a$$
+    }
+}
+";
+            await VerifyNotBuilderAsync(markup);
+        }
+
         private async Task VerifyNotBuilderAsync(string markup)
         {
             await VerifyWorkerAsync(markup, isBuilder: false);
-- 
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