fix(management-service): resolve ManagementService-005,008,010,011 — supervision strategy, configured command timeout, remove stale ResolveRoles path; ManagementService-012 deferred

tests/ScadaLink.ManagementService.Tests/ManagementActorSupervisionTests.cs

@@ -0,0 +1,39 @@
+using Akka.Actor;
+using ScadaLink.ManagementService;
+
+namespace ScadaLink.ManagementService.Tests;
+
+/// <summary>
+/// Tests for the <see cref="ManagementActor"/> supervision strategy
+/// (finding ManagementService-005). The project convention is that long-lived
+/// coordinator-style actors declare an explicit Resume-based strategy.
+/// </summary>
+public class ManagementActorSupervisionTests
+{
+    [Fact]
+    public void CreateSupervisorStrategy_ReturnsOneForOneStrategy()
+    {
+        var strategy = ManagementActor.CreateSupervisorStrategy();
+
+        Assert.IsType<OneForOneStrategy>(strategy);
+    }
+
+    [Fact]
+    public void CreateSupervisorStrategy_ResumesOnArbitraryException()
+    {
+        var strategy = (OneForOneStrategy)ManagementActor.CreateSupervisorStrategy();
+
+        var directive = strategy.Decider.Decide(new InvalidOperationException("boom"));
+
+        Assert.Equal(Directive.Resume, directive);
+    }
+
+    [Fact]
+    public void CreateSupervisorStrategy_ResumesIndefinitely()
+    {
+        var strategy = (OneForOneStrategy)ManagementActor.CreateSupervisorStrategy();
+
+        // Coordinator actors should not give up: unbounded retries.
+        Assert.Equal(-1, strategy.MaxNumberOfRetries);
+    }
+}