test/python/tools/test_database_import.py

   1 """
   2 Tests for functions to import a new database.
   3 """
   4 from pathlib import Path
   5 from contextlib import closing
   6
   7 import pytest
   8 import psycopg2
   9
  10 from nominatim.tools import database_import
  11 from nominatim.errors import UsageError
  12
  13 class TestDatabaseSetup:
  14     DBNAME = 'test_nominatim_python_unittest'
  15
  16     @pytest.fixture(autouse=True)
  17     def setup_nonexistant_db(self):
  18         conn = psycopg2.connect(database='postgres')
  19
  20         try:
  21             conn.set_isolation_level(0)
  22             with conn.cursor() as cur:
  23                 cur.execute(f'DROP DATABASE IF EXISTS {self.DBNAME}')
  24
  25             yield True
  26
  27             with conn.cursor() as cur:
  28                 cur.execute(f'DROP DATABASE IF EXISTS {self.DBNAME}')
  29         finally:
  30             conn.close()
  31
  32     @pytest.fixture
  33     def cursor(self):
  34         conn = psycopg2.connect(database=self.DBNAME)
  35
  36         try:
  37             with conn.cursor() as cur:
  38                 yield cur
  39         finally:
  40             conn.close()
  41
  42
  43     def conn(self):
  44         return closing(psycopg2.connect(database=self.DBNAME))
  45
  46
  47     def test_setup_skeleton(self):
  48         database_import.setup_database_skeleton(f'dbname={self.DBNAME}')
  49
  50         # Check that all extensions are set up.
  51         with self.conn() as conn:
  52             with conn.cursor() as cur:
  53                 cur.execute('CREATE TABLE t (h HSTORE, geom GEOMETRY(Geometry, 4326))')
  54
  55
  56     def test_unsupported_pg_version(self, monkeypatch):
  57         monkeypatch.setattr(database_import, 'POSTGRESQL_REQUIRED_VERSION', (100, 4))
  58
  59         with pytest.raises(UsageError, match='PostgreSQL server is too old.'):
  60             database_import.setup_database_skeleton(f'dbname={self.DBNAME}')
  61
  62
  63     def test_create_db_missing_ro_user(self):
  64         with pytest.raises(UsageError, match='Missing read-only user.'):
  65             database_import.setup_database_skeleton(f'dbname={self.DBNAME}',
  66                                                     rouser='sdfwkjkjgdugu2;jgsafkljas;')
  67
  68
  69     def test_setup_extensions_old_postgis(self, monkeypatch):
  70         monkeypatch.setattr(database_import, 'POSTGIS_REQUIRED_VERSION', (50, 50))
  71
  72         with pytest.raises(UsageError, match='PostGIS is too old.'):
  73             database_import.setup_database_skeleton(f'dbname={self.DBNAME}')
  74
  75
  76 def test_setup_skeleton_already_exists(temp_db):
  77     with pytest.raises(UsageError):
  78         database_import.setup_database_skeleton(f'dbname={temp_db}')
  79
  80
  81 def test_import_osm_data_simple(table_factory, osm2pgsql_options):
  82     table_factory('place', content=((1, ), ))
  83
  84     database_import.import_osm_data(Path('file.pbf'), osm2pgsql_options)
  85
  86
  87 def test_import_osm_data_multifile(table_factory, tmp_path, osm2pgsql_options):
  88     table_factory('place', content=((1, ), ))
  89     osm2pgsql_options['osm2pgsql_cache'] = 0
  90
  91     files = [tmp_path / 'file1.osm', tmp_path / 'file2.osm']
  92     for f in files:
  93         f.write_text('test')
  94
  95     database_import.import_osm_data(files, osm2pgsql_options)
  96
  97
  98 def test_import_osm_data_simple_no_data(table_factory, osm2pgsql_options):
  99     table_factory('place')
 100
 101     with pytest.raises(UsageError, match='No data.*'):
 102         database_import.import_osm_data(Path('file.pbf'), osm2pgsql_options)
 103
 104
 105 def test_import_osm_data_drop(table_factory, temp_db_conn, tmp_path, osm2pgsql_options):
 106     table_factory('place', content=((1, ), ))
 107     table_factory('planet_osm_nodes')
 108
 109     flatfile = tmp_path / 'flatfile'
 110     flatfile.write_text('touch')
 111
 112     osm2pgsql_options['flatnode_file'] = str(flatfile.resolve())
 113
 114     database_import.import_osm_data(Path('file.pbf'), osm2pgsql_options, drop=True)
 115
 116     assert not flatfile.exists()
 117     assert not temp_db_conn.table_exists('planet_osm_nodes')
 118
 119
 120 def test_import_osm_data_default_cache(table_factory, osm2pgsql_options):
 121     table_factory('place', content=((1, ), ))
 122
 123     osm2pgsql_options['osm2pgsql_cache'] = 0
 124
 125     database_import.import_osm_data(Path(__file__), osm2pgsql_options)
 126
 127
 128 def test_truncate_database_tables(temp_db_conn, temp_db_cursor, table_factory):
 129     tables = ('placex', 'place_addressline', 'location_area',
 130               'location_area_country',
 131               'location_property_tiger', 'location_property_osmline',
 132               'location_postcode', 'search_name', 'location_road_23')
 133     for table in tables:
 134         table_factory(table, content=((1, ), (2, ), (3, )))
 135         assert temp_db_cursor.table_rows(table) == 3
 136
 137     database_import.truncate_data_tables(temp_db_conn)
 138
 139     for table in tables:
 140         assert temp_db_cursor.table_rows(table) == 0
 141
 142
 143 @pytest.mark.parametrize("threads", (1, 5))
 144 def test_load_data(dsn, place_row, placex_table, osmline_table,
 145                    word_table, temp_db_cursor, threads):
 146     for func in ('precompute_words', 'getorcreate_housenumber_id', 'make_standard_name'):
 147         temp_db_cursor.execute("""CREATE FUNCTION {} (src TEXT)
 148                                   RETURNS TEXT AS $$ SELECT 'a'::TEXT $$ LANGUAGE SQL
 149                                """.format(func))
 150     for oid in range(100, 130):
 151         place_row(osm_id=oid)
 152     place_row(osm_type='W', osm_id=342, cls='place', typ='houses',
 153               geom='SRID=4326;LINESTRING(0 0, 10 10)')
 154
 155     database_import.load_data(dsn, threads)
 156
 157     assert temp_db_cursor.table_rows('placex') == 30
 158     assert temp_db_cursor.table_rows('location_property_osmline') == 1