Hide test options

This PR hides the `--unittest-mode` option that is used to treat all warnings as errors which is helpful when testing things, but is not intended to be used elsewhere.

The option is simply not shown in the list of supported options but still works in case anyone wants to use it.

Duplicati/Library/Main/Options.cs

@@ -391,6 +391,14 @@ namespace Duplicati.Library.Main
             }
         }
 
+        private IEnumerable<ICommandLineArgument> GetDebugConditionalCommands()
+        {
+#if DEBUG
+            yield return new CommandLineArgument("unittest-mode", CommandLineArgument.ArgumentType.Boolean, Strings.Options.UnittestmodeShort, Strings.Options.UnittestmodeLong, "false");
+#endif
+            yield break;
+        }
+
         /// <summary>
         /// Gets all supported commands
         /// </summary>
@@ -398,7 +406,6 @@ namespace Duplicati.Library.Main
         [
             new CommandLineArgument("dblock-size", CommandLineArgument.ArgumentType.Size, Strings.Options.DblocksizeShort, Strings.Options.DblocksizeLong, DEFAULT_VOLUME_SIZE, ["remote-volume-size"]),
             new CommandLineArgument("auto-cleanup", CommandLineArgument.ArgumentType.Boolean, Strings.Options.AutocleanupShort, Strings.Options.AutocleanupLong, "false"),
-            new CommandLineArgument("unittest-mode", CommandLineArgument.ArgumentType.Boolean, Strings.Options.UnittestmodeShort, Strings.Options.UnittestmodeLong, "false"),
 
             new CommandLineArgument("control-files", CommandLineArgument.ArgumentType.Path, Strings.Options.ControlfilesShort, Strings.Options.ControlfilesLong),
             new CommandLineArgument("skip-file-hash-checks", CommandLineArgument.ArgumentType.Boolean, Strings.Options.SkipfilehashchecksShort, Strings.Options.SkipfilehashchecksLong, "false"),
@@ -596,7 +603,8 @@ namespace Duplicati.Library.Main
             new CommandLineArgument("internal-profiling", CommandLineArgument.ArgumentType.Boolean, Strings.Options.InternalProfilingShort, Strings.Options.InternalProfilingLong, "false"),
             new CommandLineArgument("ignore-update-if-version-exists", CommandLineArgument.ArgumentType.Boolean, Strings.Options.IgnoreUpdateIfVersionExistsShort, Strings.Options.IgnoreUpdateIfVersionExistsLong, "false"),
 
-            .. GetOSConditionalCommands()
+            .. GetOSConditionalCommands(),
+            .. GetDebugConditionalCommands(),
         ];
 
         /// <summary>