From 55e57af8156eab2c28c62b5c6c5473405cb1c411 Mon Sep 17 00:00:00 2001
From: "Chris Ross (ASP.NET)" <chrross@microsoft.com>
Date: Wed, 2 May 2018 11:35:48 -0700
Subject: [PATCH] Adding additional tests for AddHostedService

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

diff --git a/test/Microsoft.Extensions.Hosting.Tests/HostTests.cs b/test/Microsoft.Extensions.Hosting.Tests/HostTests.cs
index 31a38b81c5..eaca45f5e8 100644
--- a/test/Microsoft.Extensions.Hosting.Tests/HostTests.cs
+++ b/test/Microsoft.Extensions.Hosting.Tests/HostTests.cs
@@ -104,6 +104,38 @@ namespace Microsoft.Extensions.Hosting
             Assert.Equal(1, service.DisposeCount);
         }
 
+        [Fact]
+        public void HostedServiceCanAcceptSingletonDependencies()
+        {
+            using (var host = CreateBuilder()
+                .ConfigureServices((hostContext, services) =>
+                {
+                    services.AddSingleton<IFakeService, FakeService>();
+                    services.AddHostedService<FakeHostedServiceWithDependency>();
+                })
+                .Start())
+            {
+            }
+        }
+
+        private class FakeHostedServiceWithDependency : IHostedService
+        {
+            public FakeHostedServiceWithDependency(IFakeService fakeService)
+            {
+                Assert.NotNull(fakeService);
+            }
+
+            public Task StartAsync(CancellationToken cancellationToken)
+            {
+                return Task.CompletedTask;
+            }
+
+            public Task StopAsync(CancellationToken cancellationToken)
+            {
+                return Task.CompletedTask;
+            }
+        }
+
         [Fact]
         public async Task HostedServiceStartNotCalledIfHostNotStarted()
         {