From: Sarah Hoffmann <lonvia@denofr.de>
Date: Wed, 19 May 2021 10:11:04 +0000 (+0200)
Subject: test: replace raw execute() with fixture code where possible
X-Git-Tag: v4.0.0~76^2~4
X-Git-Url: https://git.openstreetmap.org./nominatim.git/commitdiff_plain/c06a1d007a4e67ab5caf5bf63d351f83e4e54ab6

test: replace raw execute() with fixture code where possible
---

diff --git a/test/python/conftest.py b/test/python/conftest.py
index dccb7f96..969a6aaa 100644
--- a/test/python/conftest.py
+++ b/test/python/conftest.py
@@ -19,7 +19,7 @@ import nominatim.tokenizer.factory
 
 import dummy_tokenizer
 import mocks
-from cursor import TestingCursor
+from cursor import CursorForTesting
 
 
 @pytest.fixture
@@ -80,7 +80,7 @@ def temp_db_cursor(temp_db):
     """
     conn = psycopg2.connect('dbname=' + temp_db)
     conn.set_isolation_level(0)
-    with conn.cursor(cursor_factory=TestingCursor) as cur:
+    with conn.cursor(cursor_factory=CursorForTesting) as cur:
         yield cur
     conn.close()
 
diff --git a/test/python/cursor.py b/test/python/cursor.py
index 9b8ff83b..46069020 100644
--- a/test/python/cursor.py
+++ b/test/python/cursor.py
@@ -3,7 +3,7 @@ Specialised psycopg2 cursor with shortcut functions useful for testing.
 """
 import psycopg2.extras
 
-class TestingCursor(psycopg2.extras.DictCursor):
+class CursorForTesting(psycopg2.extras.DictCursor):
     """ Extension to the DictCursor class that provides execution
         short-cuts that simplify writing assertions.
     """
diff --git a/test/python/test_cli.py b/test/python/test_cli.py
index 27ea0d5d..348ed9a3 100644
--- a/test/python/test_cli.py
+++ b/test/python/test_cli.py
@@ -244,9 +244,9 @@ def test_add_data_command(mock_run_legacy, name, oid):
                           (['--boundaries-only'], 1, 0),
                           (['--no-boundaries'], 0, 1),
                           (['--boundaries-only', '--no-boundaries'], 0, 0)])
-def test_index_command(mock_func_factory, temp_db_cursor, tokenizer_mock,
+def test_index_command(mock_func_factory, table_factory, tokenizer_mock,
                        params, do_bnds, do_ranks):
-    temp_db_cursor.execute("CREATE TABLE import_status (indexed bool)")
+    table_factory('import_status', 'indexed bool')
     bnd_mock = mock_func_factory(nominatim.indexer.indexer.Indexer, 'index_boundaries')
     rank_mock = mock_func_factory(nominatim.indexer.indexer.Indexer, 'index_by_rank')
 
diff --git a/test/python/test_db_connection.py b/test/python/test_db_connection.py
index 5de68618..f10f72d1 100644
--- a/test/python/test_db_connection.py
+++ b/test/python/test_db_connection.py
@@ -20,10 +20,10 @@ def test_connection_table_exists(db, table_factory):
     assert db.table_exists('foobar') == True
 
 
-def test_connection_index_exists(db, temp_db_cursor):
+def test_connection_index_exists(db, table_factory, temp_db_cursor):
     assert db.index_exists('some_index') == False
 
-    temp_db_cursor.execute('CREATE TABLE foobar (id INT)')
+    table_factory('foobar')
     temp_db_cursor.execute('CREATE INDEX some_index ON foobar(id)')
 
     assert db.index_exists('some_index') == True
@@ -55,9 +55,7 @@ def test_connection_server_version_tuple(db):
     assert ver[0] > 8
 
 
-def test_connection_postgis_version_tuple(db, temp_db_cursor):
-    temp_db_cursor.execute('CREATE EXTENSION postgis')
-
+def test_connection_postgis_version_tuple(db, temp_db_with_extensions):
     ver = db.postgis_version_tuple()
 
     assert isinstance(ver, tuple)
diff --git a/test/python/test_db_properties.py b/test/python/test_db_properties.py
index 9621c68c..b17d41ea 100644
--- a/test/python/test_db_properties.py
+++ b/test/python/test_db_properties.py
@@ -6,26 +6,32 @@ import pytest
 from nominatim.db import properties
 
 @pytest.fixture
-def prop_table(table_factory):
-    table_factory('nominatim_properties', 'property TEXT, value TEXT')
+def property_factory(property_table, temp_db_cursor):
+    """ A function fixture that adds a property into the property table.
+    """
+    def _add_property(name, value):
+        temp_db_cursor.execute("INSERT INTO nominatim_properties VALUES(%s, %s)",
+                               (name, value))
 
+    return _add_property
 
-def test_get_property_existing(prop_table, temp_db_conn, temp_db_cursor):
-    temp_db_cursor.execute("INSERT INTO nominatim_properties VALUES('foo', 'bar')")
+
+def test_get_property_existing(property_factory, temp_db_conn):
+    property_factory('foo', 'bar')
 
     assert properties.get_property(temp_db_conn, 'foo') == 'bar'
 
 
-def test_get_property_unknown(prop_table, temp_db_conn, temp_db_cursor):
-    temp_db_cursor.execute("INSERT INTO nominatim_properties VALUES('other', 'bar')")
+def test_get_property_unknown(property_factory, temp_db_conn):
+    property_factory('other', 'bar')
 
     assert properties.get_property(temp_db_conn, 'foo') is None
 
 
 @pytest.mark.parametrize("prefill", (True, False))
-def test_set_property_new(prop_table, temp_db_conn, temp_db_cursor, prefill):
+def test_set_property_new(property_factory, temp_db_conn, temp_db_cursor, prefill):
     if prefill:
-        temp_db_cursor.execute("INSERT INTO nominatim_properties VALUES('something', 'bar')")
+        property_factory('something', 'bar')
 
     properties.set_property(temp_db_conn, 'something', 'else')
 
diff --git a/test/python/test_db_status.py b/test/python/test_db_status.py
index d5f4ef27..a1497317 100644
--- a/test/python/test_db_status.py
+++ b/test/python/test_db_status.py
@@ -58,10 +58,8 @@ def test_set_status_empty_table(status_table, temp_db_conn, temp_db_cursor):
     date = dt.datetime.fromordinal(1000000).replace(tzinfo=dt.timezone.utc)
     nominatim.db.status.set_status(temp_db_conn, date=date)
 
-    temp_db_cursor.execute("SELECT * FROM import_status")
-
-    assert temp_db_cursor.rowcount == 1
-    assert temp_db_cursor.fetchone() == [date, None, True]
+    assert temp_db_cursor.row_set("SELECT * FROM import_status") == \
+             {(date, None, True)}
 
 
 def test_set_status_filled_table(status_table, temp_db_conn, temp_db_cursor):
@@ -73,10 +71,8 @@ def test_set_status_filled_table(status_table, temp_db_conn, temp_db_cursor):
     date = dt.datetime.fromordinal(1000100).replace(tzinfo=dt.timezone.utc)
     nominatim.db.status.set_status(temp_db_conn, date=date, seq=456, indexed=False)
 
-    temp_db_cursor.execute("SELECT * FROM import_status")
-
-    assert temp_db_cursor.rowcount == 1
-    assert temp_db_cursor.fetchone() == [date, 456, False]
+    assert temp_db_cursor.row_set("SELECT * FROM import_status") == \
+             {(date, 456, False)}
 
 
 def test_set_status_missing_date(status_table, temp_db_conn, temp_db_cursor):
@@ -87,10 +83,8 @@ def test_set_status_missing_date(status_table, temp_db_conn, temp_db_cursor):
 
     nominatim.db.status.set_status(temp_db_conn, date=None, seq=456, indexed=False)
 
-    temp_db_cursor.execute("SELECT * FROM import_status")
-
-    assert temp_db_cursor.rowcount == 1
-    assert temp_db_cursor.fetchone() == [date, 456, False]
+    assert temp_db_cursor.row_set("SELECT * FROM import_status") == \
+             {(date, 456, False)}
 
 
 def test_get_status_empty_table(status_table, temp_db_conn):
diff --git a/test/python/test_db_utils.py b/test/python/test_db_utils.py
index b8a49ccf..4a603888 100644
--- a/test/python/test_db_utils.py
+++ b/test/python/test_db_utils.py
@@ -13,10 +13,7 @@ def test_execute_file_success(dsn, temp_db_cursor, tmp_path):
 
     db_utils.execute_file(dsn, tmpfile)
 
-    temp_db_cursor.execute('SELECT * FROM test')
-
-    assert temp_db_cursor.rowcount == 1
-    assert temp_db_cursor.fetchone()[0] == 56
+    assert temp_db_cursor.row_set('SELECT * FROM test') == {(56, )}
 
 def test_execute_file_bad_file(dsn, tmp_path):
     with pytest.raises(FileNotFoundError):
@@ -44,10 +41,7 @@ def test_execute_file_with_pre_code(dsn, tmp_path, temp_db_cursor):
 
     db_utils.execute_file(dsn, tmpfile, pre_code='CREATE TABLE test (id INT)')
 
-    temp_db_cursor.execute('SELECT * FROM test')
-
-    assert temp_db_cursor.rowcount == 1
-    assert temp_db_cursor.fetchone()[0] == 4
+    assert temp_db_cursor.row_set('SELECT * FROM test') == {(4, )}
 
 
 def test_execute_file_with_post_code(dsn, tmp_path, temp_db_cursor):
@@ -56,7 +50,4 @@ def test_execute_file_with_post_code(dsn, tmp_path, temp_db_cursor):
 
     db_utils.execute_file(dsn, tmpfile, post_code='INSERT INTO test VALUES(23)')
 
-    temp_db_cursor.execute('SELECT * FROM test')
-
-    assert temp_db_cursor.rowcount == 1
-    assert temp_db_cursor.fetchone()[0] == 23
+    assert temp_db_cursor.row_set('SELECT * FROM test') == {(23, )}
diff --git a/test/python/test_tokenizer_legacy.py b/test/python/test_tokenizer_legacy.py
index 5993562a..2669e608 100644
--- a/test/python/test_tokenizer_legacy.py
+++ b/test/python/test_tokenizer_legacy.py
@@ -243,9 +243,8 @@ def test_update_special_phrase_delete_all(analyzer, word_table, temp_db_cursor,
 
 def test_update_special_phrases_no_replace(analyzer, word_table, temp_db_cursor,
                                           make_standard_name):
-    temp_db_cursor.execute("""INSERT INTO word (word_token, word, class, type, operator)
-                              VALUES (' foo', 'foo', 'amenity', 'prison', 'in'),
-                                     (' bar', 'bar', 'highway', 'road', null)""")
+    word_table.add_special(' foo', 'foo', 'amenity', 'prison', 'in')
+    word_table.add_special(' bar', 'bar', 'highway', 'road', None)
 
     assert word_table.count_special() == 2
 
diff --git a/test/python/test_tokenizer_legacy_icu.py b/test/python/test_tokenizer_legacy_icu.py
index 1b1e97f8..b3c7874d 100644
--- a/test/python/test_tokenizer_legacy_icu.py
+++ b/test/python/test_tokenizer_legacy_icu.py
@@ -180,10 +180,9 @@ def test_update_special_phrase_empty_table(analyzer, word_table, temp_db_cursor)
                        (' ST', 'street', 'highway', 'primary', 'in')))
 
 
-def test_update_special_phrase_delete_all(analyzer, word_table, temp_db_cursor):
-    temp_db_cursor.execute("""INSERT INTO word (word_token, word, class, type, operator)
-                              VALUES (' FOO', 'foo', 'amenity', 'prison', 'in'),
-                                     (' BAR', 'bar', 'highway', 'road', null)""")
+def test_update_special_phrase_delete_all(analyzer, word_table):
+    word_table.add_special(' FOO', 'foo', 'amenity', 'prison', 'in')
+    word_table.add_special(' BAR', 'bar', 'highway', 'road', None)
 
     assert word_table.count_special() == 2
 
@@ -193,10 +192,9 @@ def test_update_special_phrase_delete_all(analyzer, word_table, temp_db_cursor):
     assert word_table.count_special() == 0
 
 
-def test_update_special_phrases_no_replace(analyzer, word_table, temp_db_cursor,):
-    temp_db_cursor.execute("""INSERT INTO word (word_token, word, class, type, operator)
-                              VALUES (' FOO', 'foo', 'amenity', 'prison', 'in'),
-                                     (' BAR', 'bar', 'highway', 'road', null)""")
+def test_update_special_phrases_no_replace(analyzer, word_table):
+    word_table.add_special(' FOO', 'foo', 'amenity', 'prison', 'in')
+    word_table.add_special(' BAR', 'bar', 'highway', 'road', None)
 
     assert word_table.count_special() == 2
 
@@ -206,10 +204,9 @@ def test_update_special_phrases_no_replace(analyzer, word_table, temp_db_cursor,
     assert word_table.count_special() == 2
 
 
-def test_update_special_phrase_modify(analyzer, word_table, temp_db_cursor):
-    temp_db_cursor.execute("""INSERT INTO word (word_token, word, class, type, operator)
-                              VALUES (' FOO', 'foo', 'amenity', 'prison', 'in'),
-                                     (' BAR', 'bar', 'highway', 'road', null)""")
+def test_update_special_phrase_modify(analyzer, word_table):
+    word_table.add_special(' FOO', 'foo', 'amenity', 'prison', 'in')
+    word_table.add_special(' BAR', 'bar', 'highway', 'road', None)
 
     assert word_table.count_special() == 2
 
diff --git a/test/python/test_tools_admin.py b/test/python/test_tools_admin.py
index 36c7d6ff..646d6755 100644
--- a/test/python/test_tools_admin.py
+++ b/test/python/test_tools_admin.py
@@ -3,39 +3,40 @@ Tests for maintenance and analysis functions.
 """
 import pytest
 
-from nominatim.db.connection import connect
 from nominatim.errors import UsageError
 from nominatim.tools import admin
 
-@pytest.fixture
-def db(temp_db, placex_table):
-    with connect('dbname=' + temp_db) as conn:
-        yield conn
+@pytest.fixture(autouse=True)
+def create_placex_table(placex_table):
+    """ All tests in this module require the placex table to be set up.
+    """
+    pass
 
-def test_analyse_indexing_no_objects(db):
+
+def test_analyse_indexing_no_objects(temp_db_conn):
     with pytest.raises(UsageError):
-        admin.analyse_indexing(db)
+        admin.analyse_indexing(temp_db_conn)
 
 
 @pytest.mark.parametrize("oid", ['1234', 'N123a', 'X123'])
-def test_analyse_indexing_bad_osmid(db, oid):
+def test_analyse_indexing_bad_osmid(temp_db_conn, oid):
     with pytest.raises(UsageError):
-        admin.analyse_indexing(db, osm_id=oid)
+        admin.analyse_indexing(temp_db_conn, osm_id=oid)
 
 
-def test_analyse_indexing_unknown_osmid(db):
+def test_analyse_indexing_unknown_osmid(temp_db_conn):
     with pytest.raises(UsageError):
-        admin.analyse_indexing(db, osm_id='W12345674')
+        admin.analyse_indexing(temp_db_conn, osm_id='W12345674')
 
 
-def test_analyse_indexing_with_place_id(db, temp_db_cursor):
+def test_analyse_indexing_with_place_id(temp_db_conn, temp_db_cursor):
     temp_db_cursor.execute("INSERT INTO placex (place_id) VALUES(12345)")
 
-    admin.analyse_indexing(db, place_id=12345)
+    admin.analyse_indexing(temp_db_conn, place_id=12345)
 
 
-def test_analyse_indexing_with_osm_id(db, temp_db_cursor):
+def test_analyse_indexing_with_osm_id(temp_db_conn, temp_db_cursor):
     temp_db_cursor.execute("""INSERT INTO placex (place_id, osm_type, osm_id)
                               VALUES(9988, 'N', 10000)""")
 
-    admin.analyse_indexing(db, osm_id='N10000')
+    admin.analyse_indexing(temp_db_conn, osm_id='N10000')
diff --git a/test/python/test_tools_check_database.py b/test/python/test_tools_check_database.py
index 53001c27..a0afb045 100644
--- a/test/python/test_tools_check_database.py
+++ b/test/python/test_tools_check_database.py
@@ -23,8 +23,8 @@ def test_check_conection_bad(def_config):
     assert chkdb.check_connection(badconn, def_config) == chkdb.CheckState.FATAL
 
 
-def test_check_placex_table_good(temp_db_cursor, temp_db_conn, def_config):
-    temp_db_cursor.execute('CREATE TABLE placex (place_id int)')
+def test_check_placex_table_good(table_factory, temp_db_conn, def_config):
+    table_factory('placex')
     assert chkdb.check_placex_table(temp_db_conn, def_config) == chkdb.CheckState.OK
 
 
@@ -32,14 +32,13 @@ def test_check_placex_table_bad(temp_db_conn, def_config):
     assert chkdb.check_placex_table(temp_db_conn, def_config) == chkdb.CheckState.FATAL
 
 
-def test_check_placex_table_size_good(temp_db_cursor, temp_db_conn, def_config):
-    temp_db_cursor.execute('CREATE TABLE placex (place_id int)')
-    temp_db_cursor.execute('INSERT INTO placex VALUES (1), (2)')
+def test_check_placex_table_size_good(table_factory, temp_db_conn, def_config):
+    table_factory('placex', content=((1, ), (2, )))
     assert chkdb.check_placex_size(temp_db_conn, def_config) == chkdb.CheckState.OK
 
 
-def test_check_placex_table_size_bad(temp_db_cursor, temp_db_conn, def_config):
-    temp_db_cursor.execute('CREATE TABLE placex (place_id int)')
+def test_check_placex_table_size_bad(table_factory, temp_db_conn, def_config):
+    table_factory('placex')
     assert chkdb.check_placex_size(temp_db_conn, def_config) == chkdb.CheckState.FATAL
 
 
@@ -61,15 +60,15 @@ def test_check_tokenizer(tokenizer_mock, temp_db_conn, def_config, monkeypatch,
     assert chkdb.check_tokenizer(temp_db_conn, def_config) == state
 
 
-def test_check_indexing_good(temp_db_cursor, temp_db_conn, def_config):
-    temp_db_cursor.execute('CREATE TABLE placex (place_id int, indexed_status smallint)')
-    temp_db_cursor.execute('INSERT INTO placex VALUES (1, 0), (2, 0)')
+def test_check_indexing_good(table_factory, temp_db_conn, def_config):
+    table_factory('placex', 'place_id int, indexed_status smallint',
+                  content=((1, 0), (2, 0)))
     assert chkdb.check_indexing(temp_db_conn, def_config) == chkdb.CheckState.OK
 
 
-def test_check_indexing_bad(temp_db_cursor, temp_db_conn, def_config):
-    temp_db_cursor.execute('CREATE TABLE placex (place_id int, indexed_status smallint)')
-    temp_db_cursor.execute('INSERT INTO placex VALUES (1, 0), (2, 2)')
+def test_check_indexing_bad(table_factory, temp_db_conn, def_config):
+    table_factory('placex', 'place_id int, indexed_status smallint',
+                  content=((1, 0), (2, 2)))
     assert chkdb.check_indexing(temp_db_conn, def_config) == chkdb.CheckState.FAIL
 
 
diff --git a/test/python/test_tools_database_import.py b/test/python/test_tools_database_import.py
index a2ba04a2..ef406353 100644
--- a/test/python/test_tools_database_import.py
+++ b/test/python/test_tools_database_import.py
@@ -67,10 +67,11 @@ def test_create_db_missing_ro_user(nonexistant_db):
         database_import.create_db('dbname=' + nonexistant_db, rouser='sdfwkjkjgdugu2;jgsafkljas;')
 
 
-def test_setup_extensions(temp_db_conn, temp_db_cursor):
+def test_setup_extensions(temp_db_conn, table_factory):
     database_import.setup_extensions(temp_db_conn)
 
-    temp_db_cursor.execute('CREATE TABLE t (h HSTORE, geom GEOMETRY(Geometry, 4326))')
+    # Use table creation to check that hstore and geometry types are available.
+    table_factory('t', 'h HSTORE, geom GEOMETRY(Geometry, 4326)')
 
 
 def test_setup_extensions_old_postgis(temp_db_conn, monkeypatch):
@@ -80,42 +81,36 @@ def test_setup_extensions_old_postgis(temp_db_conn, monkeypatch):
         database_import.setup_extensions(temp_db_conn)
 
 
-def test_import_base_data(src_dir, temp_db, temp_db_cursor):
-    temp_db_cursor.execute('CREATE EXTENSION hstore')
-    temp_db_cursor.execute('CREATE EXTENSION postgis')
-    database_import.import_base_data('dbname=' + temp_db, src_dir / 'data')
+def test_import_base_data(dsn, src_dir, temp_db_with_extensions, temp_db_cursor):
+    database_import.import_base_data(dsn, src_dir / 'data')
 
     assert temp_db_cursor.table_rows('country_name') > 0
 
 
-def test_import_base_data_ignore_partitions(src_dir, temp_db, temp_db_cursor):
-    temp_db_cursor.execute('CREATE EXTENSION hstore')
-    temp_db_cursor.execute('CREATE EXTENSION postgis')
-    database_import.import_base_data('dbname=' + temp_db, src_dir / 'data',
-                                     ignore_partitions=True)
+def test_import_base_data_ignore_partitions(dsn, src_dir, temp_db_with_extensions,
+                                            temp_db_cursor):
+    database_import.import_base_data(dsn, src_dir / 'data', ignore_partitions=True)
 
     assert temp_db_cursor.table_rows('country_name') > 0
     assert temp_db_cursor.table_rows('country_name', where='partition != 0') == 0
 
 
-def test_import_osm_data_simple(temp_db_cursor,osm2pgsql_options):
-    temp_db_cursor.execute('CREATE TABLE place (id INT)')
-    temp_db_cursor.execute('INSERT INTO place values (1)')
+def test_import_osm_data_simple(table_factory, osm2pgsql_options):
+    table_factory('place', content=((1, ), ))
 
     database_import.import_osm_data('file.pdf', osm2pgsql_options)
 
 
-def test_import_osm_data_simple_no_data(temp_db_cursor,osm2pgsql_options):
-    temp_db_cursor.execute('CREATE TABLE place (id INT)')
+def test_import_osm_data_simple_no_data(table_factory, osm2pgsql_options):
+    table_factory('place')
 
     with pytest.raises(UsageError, match='No data.*'):
         database_import.import_osm_data('file.pdf', osm2pgsql_options)
 
 
-def test_import_osm_data_drop(temp_db_conn, temp_db_cursor, tmp_path, osm2pgsql_options):
-    temp_db_cursor.execute('CREATE TABLE place (id INT)')
-    temp_db_cursor.execute('CREATE TABLE planet_osm_nodes (id INT)')
-    temp_db_cursor.execute('INSERT INTO place values (1)')
+def test_import_osm_data_drop(table_factory, temp_db_conn, tmp_path, osm2pgsql_options):
+    table_factory('place', content=((1, ), ))
+    table_factory('planet_osm_nodes')
 
     flatfile = tmp_path / 'flatfile'
     flatfile.write_text('touch')
@@ -128,9 +123,8 @@ def test_import_osm_data_drop(temp_db_conn, temp_db_cursor, tmp_path, osm2pgsql_
     assert not temp_db_conn.table_exists('planet_osm_nodes')
 
 
-def test_import_osm_data_default_cache(temp_db_cursor,osm2pgsql_options):
-    temp_db_cursor.execute('CREATE TABLE place (id INT)')
-    temp_db_cursor.execute('INSERT INTO place values (1)')
+def test_import_osm_data_default_cache(table_factory, osm2pgsql_options):
+    table_factory('place', content=((1, ), ))
 
     osm2pgsql_options['osm2pgsql_cache'] = 0
 
diff --git a/test/python/test_tools_freeze.py b/test/python/test_tools_freeze.py
index fcdab23a..e36487a6 100644
--- a/test/python/test_tools_freeze.py
+++ b/test/python/test_tools_freeze.py
@@ -22,9 +22,9 @@ NOMINATIM_DROP_TABLES = [
     'wikipedia_article', 'wikipedia_redirect'
 ]
 
-def test_drop_tables(temp_db_conn, temp_db_cursor):
+def test_drop_tables(temp_db_conn, temp_db_cursor, table_factory):
     for table in NOMINATIM_RUNTIME_TABLES + NOMINATIM_DROP_TABLES:
-        temp_db_cursor.execute('CREATE TABLE {} (id int)'.format(table))
+        table_factory(table)
 
     freeze.drop_update_tables(temp_db_conn)
 
diff --git a/test/python/test_tools_import_special_phrases.py b/test/python/test_tools_import_special_phrases.py
index 1b4ab191..fe996a61 100644
--- a/test/python/test_tools_import_special_phrases.py
+++ b/test/python/test_tools_import_special_phrases.py
@@ -12,14 +12,16 @@ from nominatim.tools.special_phrases.sp_wiki_loader import SPWikiLoader
 from nominatim.tools.special_phrases.sp_csv_loader import SPCsvLoader
 from nominatim.tools.special_phrases.special_phrase import SpecialPhrase
 
+from cursor import CursorForTesting
+
 TEST_BASE_DIR = Path(__file__) / '..' / '..'
 
-def test_fetch_existing_place_classtype_tables(sp_importer, temp_db_cursor):
+def test_fetch_existing_place_classtype_tables(sp_importer, table_factory):
     """
         Check for the fetch_existing_place_classtype_tables() method.
         It should return the table just created.
     """
-    temp_db_cursor.execute('CREATE TABLE place_classtype_testclasstypetable()')
+    table_factory('place_classtype_testclasstypetable')
 
     sp_importer._fetch_existing_place_classtype_tables()
     contained_table = sp_importer.table_phrases_to_delete.pop()
@@ -91,7 +93,8 @@ def test_convert_settings_giving_json(sp_importer):
 
     assert returned == json_file
 
-def test_create_place_classtype_indexes(temp_db_conn, sp_importer):
+def test_create_place_classtype_indexes(temp_db_with_extensions, temp_db_conn,
+                                        table_factory, sp_importer):
     """
         Test that _create_place_classtype_indexes() create the
         place_id index and centroid index on the right place_class_type table.
@@ -100,9 +103,7 @@ def test_create_place_classtype_indexes(temp_db_conn, sp_importer):
     phrase_type = 'type'
     table_name = 'place_classtype_{}_{}'.format(phrase_class, phrase_type)
 
-    with temp_db_conn.cursor() as temp_db_cursor:
-        temp_db_cursor.execute("CREATE EXTENSION postgis;")
-        temp_db_cursor.execute('CREATE TABLE {}(place_id BIGINT, centroid GEOMETRY)'.format(table_name))
+    table_factory(table_name, 'place_id BIGINT, centroid GEOMETRY')
 
     sp_importer._create_place_classtype_indexes('', phrase_class, phrase_type)
 
@@ -119,7 +120,7 @@ def test_create_place_classtype_table(temp_db_conn, placex_table, sp_importer):
 
     assert check_table_exist(temp_db_conn, phrase_class, phrase_type)
 
-def test_grant_access_to_web_user(temp_db_conn, def_config, sp_importer):
+def test_grant_access_to_web_user(temp_db_conn, table_factory, def_config, sp_importer):
     """
         Test that _grant_access_to_webuser() give
         right access to the web user.
@@ -128,8 +129,7 @@ def test_grant_access_to_web_user(temp_db_conn, def_config, sp_importer):
     phrase_type = 'type'
     table_name = 'place_classtype_{}_{}'.format(phrase_class, phrase_type)
 
-    with temp_db_conn.cursor() as temp_db_cursor:
-        temp_db_cursor.execute('CREATE TABLE {}()'.format(table_name))
+    table_factory(table_name)
 
     sp_importer._grant_access_to_webuser(phrase_class, phrase_type)
 
@@ -154,7 +154,7 @@ def test_create_place_classtype_table_and_indexes(
         assert check_grant_access(temp_db_conn, def_config.DATABASE_WEBUSER, pair[0], pair[1])
 
 def test_remove_non_existent_tables_from_db(sp_importer, default_phrases,
-                                             temp_db_conn):
+                                            temp_db_conn):
     """
         Check for the remove_non_existent_phrases_from_db() method.
 
@@ -165,29 +165,28 @@ def test_remove_non_existent_tables_from_db(sp_importer, default_phrases,
         place_classtype tables contained in table_phrases_to_delete should
         be deleted.
     """
-    with temp_db_conn.cursor() as temp_db_cursor:
-        sp_importer.table_phrases_to_delete = {
-            'place_classtype_testclasstypetable_to_delete'
-        }
+    sp_importer.table_phrases_to_delete = {
+        'place_classtype_testclasstypetable_to_delete'
+    }
+
+    query_tables = """
+        SELECT table_name
+        FROM information_schema.tables
+        WHERE table_schema='public'
+        AND table_name like 'place_classtype_%';
+    """
 
-        query_tables = """
-            SELECT table_name
-            FROM information_schema.tables
-            WHERE table_schema='public'
-            AND table_name like 'place_classtype_%';
-        """
+    sp_importer._remove_non_existent_tables_from_db()
 
-        sp_importer._remove_non_existent_tables_from_db()
+    # Changes are not committed yet. Use temp_db_conn for checking results.
+    with temp_db_conn.cursor(cursor_factory=CursorForTesting) as cur:
+        assert cur.row_set(query_tables) \
+                 == {('place_classtype_testclasstypetable_to_keep', )}
 
-        temp_db_cursor.execute(query_tables)
-        tables_result = temp_db_cursor.fetchall()
-        assert (len(tables_result) == 1 and
-            tables_result[0][0] == 'place_classtype_testclasstypetable_to_keep'
-        )
 
 @pytest.mark.parametrize("should_replace", [(True), (False)])
 def test_import_phrases(monkeypatch, temp_db_conn, def_config, sp_importer,
-                        placex_table, tokenizer_mock, should_replace):
+                        placex_table, table_factory, tokenizer_mock, should_replace):
     """
         Check that the main import_phrases() method is well executed.
         It should create the place_classtype table, the place_id and centroid indexes,
@@ -197,11 +196,9 @@ def test_import_phrases(monkeypatch, temp_db_conn, def_config, sp_importer,
     """
     #Add some data to the database before execution in order to test
     #what is deleted and what is preserved.
-    with temp_db_conn.cursor() as temp_db_cursor:
-        temp_db_cursor.execute("""
-            CREATE TABLE place_classtype_amenity_animal_shelter();
-            CREATE TABLE place_classtype_wrongclass_wrongtype();""")
-    
+    table_factory('place_classtype_amenity_animal_shelter')
+    table_factory('place_classtype_wrongclass_wrongtype')
+
     monkeypatch.setattr('nominatim.tools.special_phrases.sp_wiki_loader.SPWikiLoader._get_wiki_content',
                         mock_get_wiki_content)
 
@@ -220,35 +217,10 @@ def test_import_phrases(monkeypatch, temp_db_conn, def_config, sp_importer,
     if should_replace:
         assert not check_table_exist(temp_db_conn, 'wrong_class', 'wrong_type')
 
-    #Format (query, should_return_something_bool) use to easily execute all asserts
-    queries_tests = set()
-
-    #Used to check that correct place_classtype table already in the datase before is still there.
-    query_existing_table = """
-        SELECT table_name
-        FROM information_schema.tables
-        WHERE table_schema='public'
-        AND table_name = 'place_classtype_amenity_animal_shelter';
-    """
-    queries_tests.add((query_existing_table, True))
-
-    #Used to check that wrong place_classtype table was deleted from the database.
-    query_wrong_table = """
-        SELECT table_name
-        FROM information_schema.tables
-        WHERE table_schema='public'
-        AND table_name = 'place_classtype_wrongclass_wrongtype';
-    """
+    assert temp_db_conn.table_exists('place_classtype_amenity_animal_shelter')
     if should_replace:
-        queries_tests.add((query_wrong_table, False))
+        assert not temp_db_conn.table_exists('place_classtype_wrongclass_wrongtype')
 
-    with temp_db_conn.cursor() as temp_db_cursor:
-        for query in queries_tests:
-            temp_db_cursor.execute(query[0])
-            if (query[1] == True):
-                assert temp_db_cursor.fetchone()
-            else:
-                assert not temp_db_cursor.fetchone()
 
 def mock_get_wiki_content(self, lang):
     """
@@ -270,15 +242,8 @@ def check_table_exist(temp_db_conn, phrase_class, phrase_type):
         Verify that the place_classtype table exists for the given
         phrase_class and phrase_type.
     """
-    table_name = 'place_classtype_{}_{}'.format(phrase_class, phrase_type)
+    return temp_db_conn.table_exists('place_classtype_{}_{}'.format(phrase_class, phrase_type))
 
-    with temp_db_conn.cursor() as temp_db_cursor:
-        temp_db_cursor.execute("""
-            SELECT *
-            FROM information_schema.tables
-            WHERE table_type='BASE TABLE'
-            AND table_name='{}'""".format(table_name))
-        return temp_db_cursor.fetchone()
 
 def check_grant_access(temp_db_conn, user, phrase_class, phrase_type):
     """
@@ -332,7 +297,6 @@ def temp_phplib_dir_with_migration():
         yield Path(phpdir)
 
 @pytest.fixture
-def default_phrases(temp_db_cursor):
-    temp_db_cursor.execute("""
-        CREATE TABLE place_classtype_testclasstypetable_to_delete();
-        CREATE TABLE place_classtype_testclasstypetable_to_keep();""")
+def default_phrases(table_factory):
+    table_factory('place_classtype_testclasstypetable_to_delete')
+    table_factory('place_classtype_testclasstypetable_to_keep')
diff --git a/test/python/test_tools_replication.py b/test/python/test_tools_replication.py
index affe1317..ee48eef5 100644
--- a/test/python/test_tools_replication.py
+++ b/test/python/test_tools_replication.py
@@ -20,7 +20,7 @@ OSM_NODE_DATA = """\
 
 ### init replication
 
-def test_init_replication_bad_base_url(monkeypatch, status_table, place_row, temp_db_conn, temp_db_cursor):
+def test_init_replication_bad_base_url(monkeypatch, status_table, place_row, temp_db_conn):
     place_row(osm_type='N', osm_id=100)
 
     monkeypatch.setattr(nominatim.db.status, "get_url", lambda u : OSM_NODE_DATA)
@@ -39,12 +39,11 @@ def test_init_replication_success(monkeypatch, status_table, place_row, temp_db_
 
     nominatim.tools.replication.init_replication(temp_db_conn, 'https://test.io')
 
-    temp_db_cursor.execute("SELECT * FROM import_status")
-
     expected_date = dt.datetime.strptime('2006-01-27T19:09:10', status.ISODATE_FORMAT)\
                         .replace(tzinfo=dt.timezone.utc)
-    assert temp_db_cursor.rowcount == 1
-    assert temp_db_cursor.fetchone() == [expected_date, 234, True]
+
+    assert temp_db_cursor.row_set("SELECT * FROM import_status") \
+             == {(expected_date, 234, True)}
 
 
 ### checking for updates