test: unit test cases for sub modules in core.app (except core.app.apps) (#32476)

api/core/app/layers/suspend_layer.py

@@ -6,16 +6,23 @@ from dify_graph.graph_events.graph import GraphRunPausedEvent
 class SuspendLayer(GraphEngineLayer):
     """ """
 
+    def __init__(self) -> None:
+        super().__init__()
+        self._paused = False
+
     def on_graph_start(self):
-        pass
+        self._paused = False
 
     def on_event(self, event: GraphEngineEvent):
         """
         Handle the paused event, stash runtime state into storage and wait for resume.
         """
         if isinstance(event, GraphRunPausedEvent):
-            pass
+            self._paused = True
 
     def on_graph_end(self, error: Exception | None):
         """ """
-        pass
+        self._paused = False
+
+    def is_paused(self) -> bool:
+        return self._paused

api/core/app/workflow/layers/persistence.py

@@ -128,14 +128,14 @@ class WorkflowPersistenceLayer(GraphEngineLayer):
             self._handle_graph_run_paused(event)
             return
 
-        if isinstance(event, NodeRunStartedEvent):
-            self._handle_node_started(event)
-            return
-
         if isinstance(event, NodeRunRetryEvent):
             self._handle_node_retry(event)
             return
 
+        if isinstance(event, NodeRunStartedEvent):
+            self._handle_node_started(event)
+            return
+
         if isinstance(event, NodeRunSucceededEvent):
             self._handle_node_succeeded(event)
             return