feat:Allow agent evaluation from modules ending in ".agent"

PiperOrigin-RevId: 822888194

src/google/adk/evaluation/agent_evaluator.py

@@ -478,19 +478,27 @@ class AgentEvaluator:
     module_path = f"{module_name}"
     agent_module = importlib.import_module(module_path)
     print(dir(agent_module))
-    if hasattr(agent_module, "agent"):
-      if hasattr(agent_module.agent, "root_agent"):
-        root_agent = agent_module.agent.root_agent
-      elif hasattr(agent_module.agent, "get_agent_async"):
-        root_agent, _ = await agent_module.agent.get_agent_async()
-      else:
-        raise ValueError(
-            f"Module {module_name} does not have a root_agent or"
-            " get_agent_async method."
-        )
+
+    # One of the two things should be satisfied, either the module should have
+    # an "agent" as a member in it or the module name itself should end with
+    # ".agent".
+    if not (hasattr(agent_module, "agent") or module_name.endswith(".agent")):
+      raise ValueError(
+          f"Module {module_name} does not have a member named `agent` or the"
+          " name should endwith `.agent`."
+      )
+
+    agent_module_with_agent = (
+        agent_module.agent if hasattr(agent_module, "agent") else agent_module
+    )
+    if hasattr(agent_module_with_agent, "root_agent"):
+      root_agent = agent_module_with_agent.root_agent
+    elif hasattr(agent_module_with_agent, "get_agent_async"):
+      root_agent, _ = await agent_module_with_agent.get_agent_async()
     else:
       raise ValueError(
-          f"Module {module_name} does not have a member named `agent`."
+          f"Module {module_name} does not have a root_agent or"
+          " get_agent_async method."
       )
 
     agent_for_eval = root_agent

tests/integration/test_single_agent.py

@@ -25,6 +25,15 @@ async def test_eval_agent():
   )
 
 
+@pytest.mark.asyncio
+async def test_eval_agent_with_agent_suffix_in_module_name():
+  await AgentEvaluator.evaluate(
+      agent_module="tests.integration.fixture.home_automation_agent.agent",
+      eval_dataset_file_path_or_dir="tests/integration/fixture/home_automation_agent/simple_test.test.json",
+      num_runs=4,
+  )
+
+
 @pytest.mark.asyncio
 async def test_eval_agent_async():
   await AgentEvaluator.evaluate(