question_cmd: added testclass for the 'question_cmd()' function

tests/test_question_cmd.py

@@ -3,10 +3,13 @@ import unittest
 import argparse
 import tempfile
 from pathlib import Path
-from unittest.mock import MagicMock
+from unittest import mock
-from chatmastermind.commands.question import create_message
+from unittest.mock import MagicMock, call
+from chatmastermind.configuration import Config
+from chatmastermind.commands.question import create_message, question_cmd
 from chatmastermind.message import Message, Question, Answer
 from chatmastermind.chat import ChatDB
+from chatmastermind.ai import AI, AIResponse, Tokens
 
 
 class TestMessageCreate(unittest.TestCase):
@@ -74,6 +77,7 @@ Aaaand again some text."""
         os.remove(self.source_file1.name)
         os.remove(self.source_file2.name)
         os.remove(self.source_file3.name)
+        os.remove(self.source_file4.name)
 
     def message_list(self, tmp_dir: tempfile.TemporaryDirectory) -> list[Path]:
         # exclude '.next'
@@ -193,3 +197,90 @@ This is embedded source code.
 It is embedded code
 ```
 """))
+
+
+class TestQuestionCmd(unittest.TestCase):
+
+    def setUp(self) -> None:
+        # create DB and cache
+        self.db_path = tempfile.TemporaryDirectory()
+        self.cache_path = tempfile.TemporaryDirectory()
+        # create configuration
+        self.config = Config()
+        # create a mock argparse.Namespace
+        self.args = argparse.Namespace(
+            ask=['What is the meaning of life?'],
+            num_answers=1,
+            output_tags=['science'],
+            AI='openai',
+            model='gpt-3.5-turbo',
+            or_tags=None,
+            and_tags=None,
+            exclude_tags=None,
+            source_text=None,
+            source_code=None,
+            create=None,
+            repeat=None,
+            process=None
+        )
+
+    def input_message(self, args: argparse.Namespace) -> Message:
+        """
+        Create the expected input message for a question using the
+        given arguments.
+        """
+        # NOTE: we only use the first question from the "ask" list
+        # -> message creation using "question.create_message()" is
+        #    tested above
+        # the answer is always empty for the input message
+        return Message(Question(args.ask[0]),
+                       tags=args.output_tags,
+                       ai=args.AI,
+                       model=args.model)
+
+    def response(self, args: argparse.Namespace) -> AIResponse:
+        """
+        Create the expected AI response from the give arguments.
+        """
+        input_msg = self.input_message(args)
+        response = AIResponse(messages=[], tokens=Tokens(10, 10, 20))
+        for n in range(args.num_answers):
+            response_msg = Message(input_msg.question,
+                                   Answer(f"Answer {n}"),
+                                   tags=input_msg.tags,
+                                   ai=input_msg.ai,
+                                   model=input_msg.model)
+            response.messages.append(response_msg)
+        return response
+
+    @mock.patch('chatmastermind.commands.question.ChatDB.from_dir')
+    @mock.patch('chatmastermind.commands.question.create_ai')
+    def test_ask_single_answer(self, mock_create_ai: MagicMock, mock_from_dir: MagicMock) -> None:
+
+        # FIXME: this mock is only neccessary because the cache dir is not
+        # configurable in the configuration file
+        chat = MagicMock(spec=ChatDB)
+        mock_from_dir.return_value = chat
+
+        # create a mock AI instance
+        ai = MagicMock(spec=AI)
+        ai.request.return_value = self.response(self.args)
+        mock_create_ai.return_value = ai
+        expected_question = self.input_message(self.args)
+        expected_responses = ai.request.return_value.messages
+
+        # execute the command
+        question_cmd(self.args, self.config)
+
+        # check for correct request call
+        ai.request.assert_called_once_with(expected_question,
+                                           chat,
+                                           self.args.num_answers,
+                                           self.args.output_tags)
+
+        # check for the correct ChatDB calls:
+        # - initial question has been written (prior to the actual request)
+        # - responses have been written (after the request)
+        chat.cache_write.assert_has_calls([call([expected_question]),
+                                           call(expected_responses)],
+                                          any_order=False)