Add failing test for deferred actions

internal/stacks/stackruntime/plan_test.go

@@ -6573,33 +6573,15 @@ func TestPlanWithDeferredActionInvocation(t *testing.T) {
 		return plannedChangeSortKey(gotChanges[i]) < plannedChangeSortKey(gotChanges[j])
 	})
 
-	// First, let's verify the resource was actually deferred
-	var foundDeferredResource bool
-	var foundNormalActionInvocation bool
+	// Find the deferred action invocation in the changes
 	var foundDeferredAction bool
-	
 	for _, change := range gotChanges {
-		switch c := change.(type) {
-		case *stackplan.PlannedChangeDeferredResourceInstancePlanned:
-			foundDeferredResource = true
-			t.Logf("Found deferred resource: %s", c.ResourceInstancePlanned.ResourceInstanceObjectAddr)
-		case *stackplan.PlannedChangeActionInvocationInstancePlanned:
-			foundNormalActionInvocation = true
-			t.Logf("Found normal action invocation: %s", c.ActionInvocationAddr)
-		case *stackplan.PlannedChangeDeferredActionInvocation:
+		if _, ok := change.(*stackplan.PlannedChangeDeferredActionInvocation); ok {
 			foundDeferredAction = true
-			t.Logf("Found deferred action invocation: %s", c.ActionInvocationPlanned.ActionInvocationAddr)
+			break
 		}
 	}
 
-	if !foundDeferredResource {
-		t.Error("Expected to find a deferred resource, but none was found")
-	}
-
-	if foundNormalActionInvocation {
-		t.Error("Action invocation should be deferred, not appearing as a normal invocation")
-	}
-
 	if !foundDeferredAction {
 		t.Error("Expected to find a deferred action invocation in the plan changes, but none was found")
 		t.Logf("Got %d changes:", len(gotChanges))

internal/stacks/stackruntime/testdata/mainbundle/test/deferred-action/main.tf

@@ -18,7 +18,7 @@ variable "defer" {
   type = bool
 }
 
-# Simple action
+# Action that should be invoked when resource is created
 action "testing_action" "notify" {
   config {
     message = "resource created with id ${var.id}"