added tests for 'chat.py'

chatmastermind/chat.py

@@ -179,6 +179,9 @@ class ChatDB(Chat):
     def __post_init__(self) -> None:
         # contains the latest message ID
         self.next_fname = self.db_path / '.next'
+        # make all paths absolute
+        self.cache_path = self.cache_path.absolute()
+        self.db_path = self.db_path.absolute()
 
     @classmethod
     def from_dir(cls: Type[ChatDBInst],