From 970359c6a06a8df316ca5b58f04580be5655f32c Mon Sep 17 00:00:00 2001
From: G Johansson <goran.johansson@shiftit.se>
Date: Mon, 26 May 2025 14:25:07 +0200
Subject: [PATCH] Empty response returns empty list in Nord Pool (#145514)

---
 homeassistant/components/nordpool/services.py |  7 ++---
 .../components/nordpool/strings.json          |  3 --
 .../nordpool/snapshots/test_services.ambr     |  6 ++++
 tests/components/nordpool/test_services.py    | 28 ++++++++++++++++++-
 4 files changed, 35 insertions(+), 9 deletions(-)

diff --git a/homeassistant/components/nordpool/services.py b/homeassistant/components/nordpool/services.py
index 6607edfdbcb..628962811e3 100644
--- a/homeassistant/components/nordpool/services.py
+++ b/homeassistant/components/nordpool/services.py
@@ -97,11 +97,8 @@ def async_setup_services(hass: HomeAssistant) -> None:
                 translation_domain=DOMAIN,
                 translation_key="authentication_error",
             ) from error
-        except NordPoolEmptyResponseError as error:
-            raise ServiceValidationError(
-                translation_domain=DOMAIN,
-                translation_key="empty_response",
-            ) from error
+        except NordPoolEmptyResponseError:
+            return {area: [] for area in areas}
         except NordPoolError as error:
             raise ServiceValidationError(
                 translation_domain=DOMAIN,
diff --git a/homeassistant/components/nordpool/strings.json b/homeassistant/components/nordpool/strings.json
index 7b33f032de1..73c35673826 100644
--- a/homeassistant/components/nordpool/strings.json
+++ b/homeassistant/components/nordpool/strings.json
@@ -129,9 +129,6 @@
     "authentication_error": {
       "message": "There was an authentication error as you tried to retrieve data too far in the past."
     },
-    "empty_response": {
-      "message": "Nord Pool has not posted market prices for the provided date."
-    },
     "connection_error": {
       "message": "There was a connection error connecting to the API. Try again later."
     }
diff --git a/tests/components/nordpool/snapshots/test_services.ambr b/tests/components/nordpool/snapshots/test_services.ambr
index 6a57d7ecce9..b271b433061 100644
--- a/tests/components/nordpool/snapshots/test_services.ambr
+++ b/tests/components/nordpool/snapshots/test_services.ambr
@@ -1,4 +1,10 @@
 # serializer version: 1
+# name: test_empty_response_returns_empty_list
+  dict({
+    'SE3': list([
+    ]),
+  })
+# ---
 # name: test_service_call
   dict({
     'SE3': list([
diff --git a/tests/components/nordpool/test_services.py b/tests/components/nordpool/test_services.py
index 6d6af685d28..d59ec4712d7 100644
--- a/tests/components/nordpool/test_services.py
+++ b/tests/components/nordpool/test_services.py
@@ -74,7 +74,6 @@ async def test_service_call(
     ("error", "key"),
     [
         (NordPoolAuthenticationError, "authentication_error"),
-        (NordPoolEmptyResponseError, "empty_response"),
         (NordPoolError, "connection_error"),
     ],
 )
@@ -106,6 +105,33 @@ async def test_service_call_failures(
     assert err.value.translation_key == key
 
 
+@pytest.mark.freeze_time("2024-11-05T18:00:00+00:00")
+async def test_empty_response_returns_empty_list(
+    hass: HomeAssistant,
+    load_int: MockConfigEntry,
+    snapshot: SnapshotAssertion,
+) -> None:
+    """Test get_prices_for_date service call return empty list for empty response."""
+    service_data = TEST_SERVICE_DATA.copy()
+    service_data[ATTR_CONFIG_ENTRY] = load_int.entry_id
+
+    with (
+        patch(
+            "homeassistant.components.nordpool.coordinator.NordPoolClient.async_get_delivery_period",
+            side_effect=NordPoolEmptyResponseError,
+        ),
+    ):
+        response = await hass.services.async_call(
+            DOMAIN,
+            SERVICE_GET_PRICES_FOR_DATE,
+            service_data,
+            blocking=True,
+            return_response=True,
+        )
+
+    assert response == snapshot
+
+
 @pytest.mark.freeze_time("2024-11-05T18:00:00+00:00")
 async def test_service_call_config_entry_bad_state(
     hass: HomeAssistant,