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PiperOrigin-RevId: 748777998

tests/integration/utils/asserts.py

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+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import TypedDict
+
+from .test_runner import TestRunner
+
+
+class Message(TypedDict):
+  agent_name: str
+  expected_text: str
+
+
+def assert_current_agent_is(agent_name: str, *, agent_runner: TestRunner):
+  assert agent_runner.get_current_agent_name() == agent_name
+
+
+def assert_agent_says(
+    expected_text: str, *, agent_name: str, agent_runner: TestRunner
+):
+  for event in reversed(agent_runner.get_events()):
+    if event.author == agent_name and event.content.parts[0].text:
+      assert event.content.parts[0].text.strip() == expected_text
+      return
+
+
+def assert_agent_says_in_order(
+    expected_conversation: list[Message], agent_runner: TestRunner
+):
+  expected_conversation_idx = len(expected_conversation) - 1
+  for event in reversed(agent_runner.get_events()):
+    if event.content.parts and event.content.parts[0].text:
+      assert (
+          event.author
+          == expected_conversation[expected_conversation_idx]['agent_name']
+      )
+      assert (
+          event.content.parts[0].text.strip()
+          == expected_conversation[expected_conversation_idx]['expected_text']
+      )
+      expected_conversation_idx -= 1
+      if expected_conversation_idx < 0:
+        return
+
+
+def assert_agent_transfer_path(
+    expected_path: list[str], *, agent_runner: TestRunner
+):
+  events = agent_runner.get_events()
+  idx_in_expected_path = len(expected_path) - 1
+  # iterate events in reverse order
+  for event in reversed(events):
+    function_calls = event.get_function_calls()
+    if (
+        len(function_calls) == 1
+        and function_calls[0].name == 'transfer_to_agent'
+    ):
+      assert (
+          function_calls[0].args['agent_name']
+          == expected_path[idx_in_expected_path]
+      )
+      idx_in_expected_path -= 1
+      if idx_in_expected_path < 0:
+        return