test(acceptance): beoordeling scenario asserts the workflow task is completed (refs #13)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/acceptance/Steps/EenRegistratieBeoordelenSteps.cs

@@ -16,6 +16,7 @@ public sealed class EenRegistratieBeoordelenSteps
 {
     private readonly InMemoryAclClient _acl = new();
     private readonly InMemoryRegistrationStore _store = new();
+    private readonly InMemoryUserTaskClient _tasks = new();
     private RegistrationId _id;
 
     [Given("a submitted registration with an opened zaak")]
@@ -25,6 +26,8 @@ public sealed class EenRegistratieBeoordelenSteps
         registration.AttachZaak(InMemoryAclClient.OpenedZaakUrl);
         await _store.SaveAsync(registration);
         _id = registration.Id;
+        // The process has parked at the Beoordelen user task awaiting the behandelaar.
+        _tasks.Open(_id);
     }
 
     [When("the behandelaar takes it into behandeling")]
@@ -37,7 +40,7 @@ public sealed class EenRegistratieBeoordelenSteps
 
     [When("the behandelaar decides \"(.*)\"")]
     public async Task WhenTheBehandelaarDecides(string besluit)
-        => await new BeoordeelRegistratie(_store, _acl).HandleAsync(
+        => await new BeoordeelRegistratie(_store, _acl, _tasks).HandleAsync(
             new BeoordeelRegistratieCommand(_id, Enum.Parse<BeoordelingsBesluit>(besluit, ignoreCase: true)));
 
     [Then("the registration has status \"(.*)\"")]
@@ -55,4 +58,8 @@ public sealed class EenRegistratieBeoordelenSteps
     [Then("the ACL is not asked to set the zaak status")]
     public void ThenTheAclIsNotAskedToSetTheZaakStatus()
         => Assert.Null(_acl.ApprovedZaakUrl);
+
+    [Then("the beoordeling task is completed with \"(.*)\"")]
+    public void ThenTheBeoordelingTaskIsCompletedWith(string besluit)
+        => Assert.Equal(Enum.Parse<BeoordelingsBesluit>(besluit, ignoreCase: true), _tasks.Completed?.Besluit);
 }