Fixed: mono version check will check running mono version instead running another version

src/NzbDrone.Common/NzbDrone.Common.csproj

@@ -112,6 +112,7 @@
     <Compile Include="Messaging\IEvent.cs" />
     <Compile Include="Messaging\IMessage.cs" />
     <Compile Include="PathEqualityComparer.cs" />
+    <Compile Include="Processes\IRuntimeProvider.cs" />
     <Compile Include="Processes\PidFileProvider.cs" />
     <Compile Include="Processes\ProcessOutput.cs" />
     <Compile Include="RateGate.cs" />

src/NzbDrone.Common/Processes/IRuntimeProvider.cs

@@ -0,0 +1,9 @@
+using System;
+
+namespace NzbDrone.Common.Processes
+{
+    public interface IRuntimeProvider
+    {
+        String GetVersion();
+    }
+}

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

@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using NUnit.Framework;
 using NzbDrone.Common.Processes;
 using NzbDrone.Core.HealthCheck.Checks;
@@ -18,16 +17,9 @@ namespace NzbDrone.Core.Test.HealthCheck.Checks
 
         private void GivenOutput(string version)
         {
-            Mocker.GetMock<IProcessProvider>()
-                  .Setup(s => s.StartAndCapture("mono", "--version"))
-                  .Returns(new ProcessOutput
-                  {
-                      Standard = new List<string>
-                      {
-                          String.Format("Mono JIT compiler version {0} (Debian {0}-8)", version),
-                          "Copyright (C) 2002-2011 Novell, Inc, Xamarin, Inc and Contributors. www.mono-project.com"
-                      }
-                  });
+            Mocker.GetMock<IRuntimeProvider>()
+                  .Setup(s => s.GetVersion())
+                  .Returns(String.Format("{0} (tarball Wed Sep 25 16:35:44 CDT 2013)", version));
         }
 
         [Test]
@@ -46,6 +38,14 @@ namespace NzbDrone.Core.Test.HealthCheck.Checks
             Subject.Check().ShouldBeWarning();
         }
 
+        [Test]
+        public void should_return_warning_when_mono_2_10_2()
+        {
+            GivenOutput("2.10.2");
+
+            Subject.Check().ShouldBeWarning();
+        }
+
         [Test]
         public void should_return_ok_when_mono_3_2()
         {
@@ -85,22 +85,5 @@ namespace NzbDrone.Core.Test.HealthCheck.Checks
 
             Subject.Check().ShouldBeOk();
         }
-
-        [Test]
-        public void should_return_ok_when_mono_3_6_1_with_custom_output()
-        {
-            Mocker.GetMock<IProcessProvider>()
-                  .Setup(s => s.StartAndCapture("mono", "--version"))
-                  .Returns(new ProcessOutput
-                  {
-                      Standard = new List<string>
-                      {
-                          "Mono JIT compiler version 3.6.1 (master/fce3972 Fri Jul 4 01:12:43 CEST 2014)",
-                          "Copyright (C) 2002-2011 Novell, Inc, Xamarin, Inc and Contributors. www.mono-project.com"
-                      }
-                  });
-
-            Subject.Check().ShouldBeOk();
-        }
     }
 }

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

@@ -8,13 +8,13 @@ namespace NzbDrone.Core.HealthCheck.Checks
 {
     public class MonoVersionCheck : HealthCheckBase
     {
-        private readonly IProcessProvider _processProvider;
+        private readonly IRuntimeProvider _runtimeProvider;
         private readonly Logger _logger;
         private static readonly Regex VersionRegex = new Regex(@"(?<=\W)(?<version>\d+\.\d+\.\d+(\.\d+)?)(?=\W)", RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
-        public MonoVersionCheck(IProcessProvider processProvider, Logger logger)
+        public MonoVersionCheck(IRuntimeProvider runtimeProvider, Logger logger)
         {
-            _processProvider = processProvider;
+            _runtimeProvider = runtimeProvider;
             _logger = logger;
         }
 
@@ -25,21 +25,16 @@ namespace NzbDrone.Core.HealthCheck.Checks
                 return new HealthCheck(GetType());
             }
 
-            var output = _processProvider.StartAndCapture("mono", "--version");
+            var versionMatch = VersionRegex.Match(_runtimeProvider.GetVersion());
 
-            foreach (var line in output.Standard)
+            if (versionMatch.Success)
             {
-                var versionMatch = VersionRegex.Match(line);
+                var version = new Version(versionMatch.Groups["version"].Value);
 
-                if (versionMatch.Success)
+                if (version >= new Version(3, 2))
                 {
-                    var version = new Version(versionMatch.Groups["version"].Value);
-
-                    if (version >= new Version(3, 2))
-                    {
-                        _logger.Debug("mono version is 3.2 or better: {0}", version.ToString());
-                        return new HealthCheck(GetType());
-                    }
+                    _logger.Debug("mono version is 3.2 or better: {0}", version.ToString());
+                    return new HealthCheck(GetType());
                 }
             }
 

src/NzbDrone.Mono/MonoRuntimeProvider.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Reflection;
+using NLog;
+using NzbDrone.Common.Processes;
+
+namespace NzbDrone.Mono
+{
+    public class MonoRuntimeProvider : IRuntimeProvider
+    {
+        private readonly Logger _logger;
+
+        public MonoRuntimeProvider(Logger logger)
+        {
+            _logger = logger;
+        }
+
+        public String GetVersion()
+        {
+            try
+            {
+                var type = Type.GetType("Mono.Runtime");
+
+                if (type != null)
+                {
+                    var displayName = type.GetMethod("GetDisplayName", BindingFlags.NonPublic | BindingFlags.Static);
+
+                    if (displayName != null)
+                    {
+                        return displayName.Invoke(null, null).ToString();
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                _logger.ErrorException("Unable to get mono version: " + ex.Message, ex);
+            }
+
+            return String.Empty;
+        }
+    }
+}

src/NzbDrone.Mono/NzbDrone.Mono.csproj

@@ -70,6 +70,7 @@
   <ItemGroup>
     <Compile Include="DiskProvider.cs" />
     <Compile Include="LinuxPermissionsException.cs" />
+    <Compile Include="MonoRuntimeProvider.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>