Add missing JSON decode in get_extended_address (#25)

Author: emontnemery

python_otbr_api/__init__.py

@@ -113,6 +113,6 @@ async def get_extended_address(self) -> bytes:
             raise OTBRError(f"unexpected http status {response.status}")
 
         try:
-            return bytes.fromhex(await response.text("ASCII"))
+            return bytes.fromhex(await response.json())
         except ValueError as exc:
             raise OTBRError("unexpected API response") from exc

tests/test_init.py

@@ -90,7 +90,7 @@ async def test_get_extended_address(aioclient_mock: AiohttpClientMocker) -> None
 
     mock_response = "4EF6C4F3FF750626"
 
-    aioclient_mock.get(f"{BASE_URL}/node/ext-address", text=mock_response)
+    aioclient_mock.get(f"{BASE_URL}/node/ext-address", json=mock_response)
 
     assert await otbr.get_extended_address() == bytes.fromhex(mock_response)