Fixed: Removed .Net update notice on Windows LTSB 2015

src/NzbDrone.Core.Test/HealthCheck/Checks/DotnetVersionCheckFixture.cs

@@ -0,0 +1,69 @@
+using System;
+using NUnit.Framework;
+using NzbDrone.Common.EnvironmentInfo;
+using NzbDrone.Core.HealthCheck.Checks;
+using NzbDrone.Core.Test.Framework;
+
+namespace NzbDrone.Core.Test.HealthCheck.Checks
+{
+    [TestFixture]
+    public class DotnetVersionCheckFixture : CoreTest<DotnetVersionCheck>
+    {
+        private void GivenOutput(string version)
+        {
+            WindowsOnly();
+
+            Mocker.GetMock<IPlatformInfo>()
+                  .SetupGet(s => s.Version)
+                  .Returns(new Version(version));
+        }
+
+        [TestCase("4.7.2")]
+        [TestCase("4.8")]
+        public void should_return_ok(string version)
+        {
+            GivenOutput(version);
+
+            Subject.Check().ShouldBeOk();
+        }
+
+        [TestCase("4.6.2")]
+        [TestCase("4.7")]
+        [TestCase("4.7.1")]
+        public void should_return_notice(string version)
+        {
+            GivenOutput(version);
+
+            Subject.Check().ShouldBeNotice();
+        }
+
+        public void should_return_warning(string version)
+        {
+            GivenOutput(version);
+
+            Subject.Check().ShouldBeWarning();
+        }
+
+        [TestCase("4.5")]
+        [TestCase("4.5.2")]
+        [TestCase("4.6.1")]
+        public void should_return_error(string version)
+        {
+            GivenOutput(version);
+
+            Subject.Check().ShouldBeError();
+        }
+
+        [Test]
+        public void should_return_ok_for_net462_on_Win1511()
+        {
+            Mocker.GetMock<IOsInfo>()
+                  .SetupGet(v => v.Version)
+                  .Returns("10.0.14392");
+
+            GivenOutput("4.6.2");
+
+            Subject.Check().ShouldBeOk();
+        }
+    }
+}

src/NzbDrone.Core/HealthCheck/Checks/DotnetVersionCheck.cs

@@ -7,11 +7,13 @@ namespace NzbDrone.Core.HealthCheck.Checks
     public class DotnetVersionCheck : HealthCheckBase
     {
         private readonly IPlatformInfo _platformInfo;
+        private readonly IOsInfo _osInfo;
         private readonly Logger _logger;
 
-        public DotnetVersionCheck(IPlatformInfo platformInfo, Logger logger)
+        public DotnetVersionCheck(IPlatformInfo platformInfo, IOsInfo osInfo, Logger logger)
         {
             _platformInfo = platformInfo;
+            _osInfo = osInfo;
             _logger = logger;
         }
 
@@ -26,6 +28,12 @@ namespace NzbDrone.Core.HealthCheck.Checks
 
             // Target .Net version, which would allow us to increase our target framework
             var targetVersion = new Version("4.7.2");
+            if (Version.TryParse(_osInfo.Version, out var osVersion) && osVersion < new Version("10.0.14393"))
+            {
+                // Windows 10 LTSB 1511 and before do not support 4.7.x
+                targetVersion = new Version("4.6.2");
+            }
+
             if (dotnetVersion >= targetVersion)
             {
                 _logger.Debug("Dotnet version is {0} or better: {1}", targetVersion, dotnetVersion);