New: HealthCheck for valid Branch value

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

@@ -0,0 +1,44 @@
+using NUnit.Framework;
+using NzbDrone.Core.Configuration;
+using NzbDrone.Core.HealthCheck.Checks;
+using NzbDrone.Core.Test.Framework;
+
+namespace NzbDrone.Core.Test.HealthCheck.Checks
+{
+    [TestFixture]
+    public class ReleaseBranchCheckFixture : CoreTest<ReleaseBranchCheck>
+    {
+        private void GivenValidBranch(string branch)
+        {
+            Mocker.GetMock<IConfigFileProvider>()
+                    .SetupGet(s => s.Branch)
+                    .Returns(branch);
+        }
+
+        [Test]
+        public void should_return_warning_when_branch_not_valid()
+        {
+            GivenValidBranch("master");
+
+            Subject.Check().ShouldBeWarning();
+        }
+
+        [TestCase("develop")]
+        [TestCase("nightly")]
+        public void should_return_error_when_branch_is_v1(string branch)
+        {
+            GivenValidBranch(branch);
+
+            Subject.Check().ShouldBeError();
+        }
+
+        [TestCase("aphrodite")]
+        [TestCase("Aphrodite")]
+        public void should_return_no_warning_when_branch_valid(string branch)
+        {
+            GivenValidBranch(branch);
+
+            Subject.Check().ShouldBeOk();
+        }
+    }
+}

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

@@ -0,0 +1,40 @@
+using System;
+using System.Linq;
+using NzbDrone.Core.Configuration;
+using NzbDrone.Core.Configuration.Events;
+
+namespace NzbDrone.Core.HealthCheck.Checks
+{
+    [CheckOn(typeof(ConfigSavedEvent))]
+    public class ReleaseBranchCheck : HealthCheckBase
+    {
+        private readonly IConfigFileProvider _configFileService;
+
+        public ReleaseBranchCheck(IConfigFileProvider configFileService)
+        {
+            _configFileService = configFileService;
+        }
+
+        public override HealthCheck Check()
+        {
+            var currentBranch = _configFileService.Branch.ToLower();
+
+            if (!Enum.GetNames(typeof(ReleaseBranches)).Any(x => x.ToLower() == currentBranch))
+            {
+                if (currentBranch == "develop" || currentBranch == "nightly")
+                {
+                    return new HealthCheck(GetType(), HealthCheckResult.Error, string.Format("Branch {0} is for a previous version of Radarr, set branch to 'Aphrodite' for further updates", _configFileService.Branch));
+                }
+
+                return new HealthCheck(GetType(), HealthCheckResult.Warning, string.Format("Branch {0} is not a valid Radarr release branch, you will not receive updates", _configFileService.Branch));
+            }
+
+            return new HealthCheck(GetType());
+        }
+
+        public enum ReleaseBranches
+        {
+            Aphrodite
+        }
+    }
+}