Fix type

tests/test_client_v2.py

@@ -43,8 +43,8 @@ def test_chat_documents(self) -> None:
             {"title": "widget sales 2021", "text": "4 million"},
         ]
         response = co.chat(
-            messages=cohere.UserMessage(
-                message=cohere.TextContent(text="how many widges were sold in 2020?"),
+            messages=cohere.UserV2ChatMessage(
+                content=cohere.TextContent(text="how many widges were sold in 2020?"),
                 documents=documents,
             ),
         )
@@ -68,16 +68,16 @@ def test_chat_tools(self) -> None:
             },
         }
         tools = [cohere.V2Tool(type="function", function=get_weather_tool)]
-        messages: typing.List[typing.Union[UserMessage, AssistantMessage, None, cohere.V2ToolMessage]] = [
-            UserMessage(message="what is the weather in Toronto?")
+        messages: cohere.ChatMessages = [
+            cohere.UserV2ChatMessage(content="what is the weather in Toronto?")
         ]
         res = co.chat(model="command-r-plus", tools=tools, messages=messages)
 
         # call the get_weather tool
         tool_result = {"temperature": "30C"}
         tool_content = [cohere.Content(output=tool_result, text="The weather in Toronto is 30C")]
         messages.append(res.message)
-        messages.append(cohere.V2ToolMessage(tool_call_id=res.message.tool_calls[0].id, tool_content=tool_content))
+        messages.append(cohere.ToolV2ChatMessage(tool_call_id=res.message.tool_calls[0].id, tool_content=tool_content))
 
         res = co.chat(tools=tools, messages=messages)
         print(res.message)