feat: raise no account error when bad login

roborock/web_api.py

@@ -359,6 +359,10 @@ async def code_login_v4(
                 raise RoborockInvalidUserAgreement(
                     "User agreement must be accepted again - or you are attempting to use the Mi Home app account."
                 )
+            if response_code == 3039:
+                raise RoborockAccountDoesNotExist(
+                    "This account does not exist - please ensure that you selected the right region and email."
+                )
             raise RoborockException(f"{login_response.get('msg')} - response code: {response_code}")
         user_data = login_response.get("data")
         if not isinstance(user_data, dict):

tests/test_web_api.py

@@ -6,6 +6,7 @@
 from aioresponses.compat import normalize_url
 
 from roborock import HomeData, HomeDataScene, UserData
+from roborock.exceptions import RoborockAccountDoesNotExist
 from roborock.web_api import IotLoginInfo, RoborockApiClient
 from tests.mock_data import HOME_DATA_RAW, USER_DATA
 
@@ -88,6 +89,42 @@ async def test_code_login_v4_flow(mock_rest) -> None:
     assert ud == UserData.from_dict(USER_DATA)
 
 
+async def test_code_login_v4_account_does_not_exist(mock_rest) -> None:
+    """Test that response code 3039 raises RoborockAccountDoesNotExist."""
+    mock_rest.clear()
+
+    mock_rest.post(
+        re.compile(r"https://.*iot\.roborock\.com/api/v1/getUrlByEmail.*"),
+        status=200,
+        payload={
+            "code": 200,
+            "data": {"country": "US", "countrycode": "1", "url": "https://usiot.roborock.com"},
+            "msg": "success",
+        },
+    )
+    mock_rest.post(
+        re.compile(r"https://.*iot\.roborock\.com/api/v4/email/code/send.*"),
+        status=200,
+        payload={"code": 200, "data": None, "msg": "success"},
+    )
+    mock_rest.post(
+        re.compile(r"https://.*iot\.roborock\.com/api/v3/key/sign.*"),
+        status=200,
+        payload={"code": 200, "data": {"k": "mock_k"}, "msg": "success"},
+    )
+    mock_rest.post(
+        re.compile(r"https://.*iot\.roborock\.com/api/v4/auth/email/login/code.*"),
+        status=200,
+        payload={"code": 3039, "data": None, "msg": "account does not exist"},
+    )
+
+    api = RoborockApiClient(username="test_user@gmail.com")
+    await api.request_code_v4()
+    with pytest.raises(RoborockAccountDoesNotExist) as exc_info:
+        await api.code_login_v4(4123, "US", 1)
+    assert "This account does not exist" in str(exc_info.value)
+
+
 async def test_url_cycling(mock_rest) -> None:
     """Test that we cycle through the URLs correctly."""
     # Clear mock rest so that we can override the patches.