tests: splitted 'test_main.py' into 3 modules

tests/test_message.py

@@ -0,0 +1,78 @@
+from .test_main import CmmTestCase
+from chatmastermind.message import source_code, MessageError, Question, Answer
+
+
+class SourceCodeTestCase(CmmTestCase):
+    def test_source_code_with_include_delims(self) -> None:
+        text = """
+        Some text before the code block
+        ```python
+        print("Hello, World!")
+        ```
+        Some text after the code block
+        ```python
+        x = 10
+        y = 20
+        print(x + y)
+        ```
+        """
+        expected_result = [
+            "        ```python\n        print(\"Hello, World!\")\n        ```\n",
+            "        ```python\n        x = 10\n        y = 20\n        print(x + y)\n        ```\n"
+        ]
+        result = source_code(text, include_delims=True)
+        self.assertEqual(result, expected_result)
+
+    def test_source_code_without_include_delims(self) -> None:
+        text = """
+        Some text before the code block
+        ```python
+        print("Hello, World!")
+        ```
+        Some text after the code block
+        ```python
+        x = 10
+        y = 20
+        print(x + y)
+        ```
+        """
+        expected_result = [
+            "        print(\"Hello, World!\")\n",
+            "        x = 10\n        y = 20\n        print(x + y)\n"
+        ]
+        result = source_code(text, include_delims=False)
+        self.assertEqual(result, expected_result)
+
+    def test_source_code_with_single_code_block(self) -> None:
+        text = "```python\nprint(\"Hello, World!\")\n```"
+        expected_result = ["```python\nprint(\"Hello, World!\")\n```\n"]
+        result = source_code(text, include_delims=True)
+        self.assertEqual(result, expected_result)
+
+    def test_source_code_with_no_code_blocks(self) -> None:
+        text = "Some text without any code blocks"
+        expected_result: list[str] = []
+        result = source_code(text, include_delims=True)
+        self.assertEqual(result, expected_result)
+
+
+class QuestionTestCase(CmmTestCase):
+    def test_question_with_prefix(self) -> None:
+        with self.assertRaises(MessageError):
+            Question("=== QUESTION === What is your name?")
+
+    def test_question_without_prefix(self) -> None:
+        question = Question("What is your favorite color?")
+        self.assertIsInstance(question, Question)
+        self.assertEqual(question, "What is your favorite color?")
+
+
+class AnswerTestCase(CmmTestCase):
+    def test_answer_with_prefix(self) -> None:
+        with self.assertRaises(MessageError):
+            Answer("=== ANSWER === Yes")
+
+    def test_answer_without_prefix(self) -> None:
+        answer = Answer("No")
+        self.assertIsInstance(answer, Answer)
+        self.assertEqual(answer, "No")