Cover async extract non-mapping input validation

Co-authored-by: Shri Sukhani <shrisukhani@users.noreply.github.com>

Author: cursoragent

tests/test_tools_mapping_inputs.py

@@ -37,6 +37,16 @@ def __init__(self):
         self.scrape = _AsyncScrapeManager()
 
 
+class _AsyncExtractManager:
+    async def start_and_wait(self, params):
+        return _Response({"ok": True})
+
+
+class _AsyncExtractClient:
+    def __init__(self):
+        self.extract = _AsyncExtractManager()
+
+
 def test_tool_wrappers_accept_mapping_inputs():
     client = _Client()
     params = MappingProxyType({"url": "https://example.com"})
@@ -77,4 +87,11 @@ async def run() -> None:
                 ["https://example.com"],  # type: ignore[arg-type]
             )
 
+        extract_client = _AsyncExtractClient()
+        with pytest.raises(HyperbrowserError, match="tool params must be a mapping"):
+            await WebsiteExtractTool.async_runnable(
+                extract_client,
+                "bad",  # type: ignore[arg-type]
+            )
+
     asyncio.run(run())