Use POST for suggested questions

api/tests/unit_tests/controllers/web/test_web_message_suggested_questions.py

@@ -0,0 +1,67 @@
+import inspect
+import uuid
+from types import SimpleNamespace
+from unittest.mock import MagicMock
+
+import pytest
+from flask import Flask
+
+from controllers.web.error import NotCompletionAppError
+from controllers.web.message import MessageSuggestedQuestionApi
+from core.app.entities.app_invoke_entities import InvokeFrom
+from models.model import AppMode
+
+
+@pytest.fixture
+def flask_app():
+    app = Flask(__name__)
+    app.config["TESTING"] = True
+    return app
+
+
+class TestWebMessageSuggestedQuestionApi:
+    def test_post_returns_questions(self, flask_app, monkeypatch):
+        app_model = SimpleNamespace(mode=AppMode.CHAT.value)
+        end_user = SimpleNamespace()
+        questions = ["Q1", "Q2"]
+
+        service_mock = MagicMock(return_value=questions)
+        monkeypatch.setattr(
+            "controllers.web.message.MessageService.get_suggested_questions_after_answer",
+            service_mock,
+            raising=False,
+        )
+
+        handler = inspect.unwrap(MessageSuggestedQuestionApi.post)
+        controller = MessageSuggestedQuestionApi()
+        message_id = uuid.uuid4()
+
+        with flask_app.test_request_context(
+            f"/messages/{message_id}/suggested-questions",
+            method="POST",
+            json={},
+        ):
+            result = handler(controller, app_model, end_user, message_id)
+
+        assert result == {"data": questions}
+        service_mock.assert_called_once_with(
+            app_model=app_model,
+            user=end_user,
+            message_id=str(message_id),
+            invoke_from=InvokeFrom.WEB_APP,
+        )
+
+    def test_non_chat_app_raises(self, flask_app):
+        app_model = SimpleNamespace(mode=AppMode.COMPLETION.value)
+        end_user = SimpleNamespace()
+        handler = inspect.unwrap(MessageSuggestedQuestionApi.post)
+        controller = MessageSuggestedQuestionApi()
+        message_id = uuid.uuid4()
+
+        with flask_app.test_request_context(
+            f"/messages/{message_id}/suggested-questions",
+            method="POST",
+            json={},
+        ):
+            with pytest.raises(NotCompletionAppError):
+                handler(controller, app_model, end_user, message_id)