test: add test for range function on PriceInfo

tests/fetched/test_range.py

@@ -0,0 +1,22 @@
+"""Tests fetching historical price data."""
+import base64
+from datetime import datetime
+from datetime import timedelta
+
+import pytest
+
+import tibber
+
+
+def test_fetching_hourly_prices(home):
+    date = datetime(2025, 1, 1, 0, 0, 0)
+    encoded = base64.b64encode(date.astimezone().isoformat().encode("utf-8")).decode("utf-8")
+
+    data = home.current_subscription.price_info.fetch_range("HOURLY", first="3", after=encoded)
+
+    assert data.page_info.count == 3
+    assert len(data.nodes) == 3
+
+    assert data.nodes[0].starts_at == "2025-01-01T00:00:00.000+01:00"
+    assert data.nodes[1].starts_at == "2025-01-01T01:00:00.000+01:00"
+    assert data.nodes[2].starts_at == "2025-01-01T02:00:00.000+01:00"