port replication initialisation to Python

test/python/test_tools_replication.py

@@ -0,0 +1,41 @@
+"""
+Tests for replication functionality.
+"""
+import datetime as dt
+
+import pytest
+
+import nominatim.tools.replication
+
+OSM_NODE_DATA = """\
+<osm version="0.6" generator="OpenStreetMap server" copyright="OpenStreetMap and contributors" attribution="http://www.openstreetmap.org/copyright" license="http://opendatacommons.org/licenses/odbl/1-0/">
+<node id="100" visible="true" version="1" changeset="2047" timestamp="2006-01-27T22:09:10Z" user="Foo" uid="111" lat="48.7586670" lon="8.1343060">
+</node>
+</osm>
+"""
+
+
+def test_init_replication_bad_base_url(monkeypatch, status_table, place_row, temp_db_conn, temp_db_cursor):
+    place_row(osm_type='N', osm_id=100)
+
+    monkeypatch.setattr(nominatim.db.status, "get_url", lambda u : OSM_NODE_DATA)
+
+    with pytest.raises(RuntimeError, match="Failed to reach replication service"):
+        nominatim.tools.replication.init_replication(temp_db_conn, 'https://test.io')
+
+
+def test_init_replication_success(monkeypatch, status_table, place_row, temp_db_conn, temp_db_cursor):
+    place_row(osm_type='N', osm_id=100)
+
+    monkeypatch.setattr(nominatim.db.status, "get_url", lambda u : OSM_NODE_DATA)
+    monkeypatch.setattr(nominatim.tools.replication.ReplicationServer,
+                        "timestamp_to_sequence",
+                        lambda self, date: 234)
+
+    nominatim.tools.replication.init_replication(temp_db_conn, 'https://test.io')
+
+    temp_db_cursor.execute("SELECT * FROM import_status")
+
+    expected_date = dt.datetime.fromisoformat('2006-01-27T19:09:10').replace(tzinfo=dt.timezone.utc)
+    assert temp_db_cursor.rowcount == 1
+    assert temp_db_cursor.fetchone() == [expected_date, 234, True]