test/python/test_tools_postcodes.py

   1 """
   2 Tests for functions to maintain the artificial postcode table.
   3 """
   4 import subprocess
   5
   6 import pytest
   7
   8 from nominatim.tools import postcodes
   9 import dummy_tokenizer
  10
  11 class MockPostcodeTable:
  12     """ A location_postcode table for testing.
  13     """
  14     def __init__(self, conn):
  15         self.conn = conn
  16         with conn.cursor() as cur:
  17             cur.execute("""CREATE TABLE location_postcode (
  18                                place_id BIGINT,
  19                                parent_place_id BIGINT,
  20                                rank_search SMALLINT,
  21                                rank_address SMALLINT,
  22                                indexed_status SMALLINT,
  23                                indexed_date TIMESTAMP,
  24                                country_code varchar(2),
  25                                postcode TEXT,
  26                                geometry GEOMETRY(Geometry, 4326))""")
  27             cur.execute("""CREATE OR REPLACE FUNCTION token_normalized_postcode(postcode TEXT)
  28                            RETURNS TEXT AS $$ BEGIN RETURN postcode; END; $$ LANGUAGE plpgsql;
  29                         """)
  30         conn.commit()
  31
  32     def add(self, country, postcode, x, y):
  33         with self.conn.cursor() as cur:
  34             cur.execute("""INSERT INTO location_postcode (place_id, indexed_status,
  35                                                           country_code, postcode,
  36                                                           geometry)
  37                            VALUES (nextval('seq_place'), 1, %s, %s,
  38                                    'SRID=4326;POINT(%s %s)')""",
  39                         (country, postcode, x, y))
  40         self.conn.commit()
  41
  42
  43     @property
  44     def row_set(self):
  45         with self.conn.cursor() as cur:
  46             cur.execute("""SELECT country_code, postcode,
  47                                   ST_X(geometry), ST_Y(geometry)
  48                            FROM location_postcode""")
  49             return set((tuple(row) for row in cur))
  50
  51
  52 @pytest.fixture
  53 def tokenizer():
  54     return dummy_tokenizer.DummyTokenizer(None, None)
  55
  56 @pytest.fixture
  57 def postcode_table(temp_db_conn, placex_table, word_table):
  58     return MockPostcodeTable(temp_db_conn)
  59
  60
  61 def test_import_postcodes_empty(dsn, postcode_table, tmp_path, tokenizer):
  62     postcodes.update_postcodes(dsn, tmp_path, tokenizer)
  63
  64     assert not postcode_table.row_set
  65
  66
  67 def test_import_postcodes_add_new(dsn, placex_table, postcode_table, tmp_path, tokenizer):
  68     placex_table.add(country='xx', geom='POINT(10 12)',
  69                      address=dict(postcode='9486'))
  70     postcode_table.add('yy', '9486', 99, 34)
  71
  72     postcodes.update_postcodes(dsn, tmp_path, tokenizer)
  73
  74     assert postcode_table.row_set == {('xx', '9486', 10, 12), }
  75
  76
  77 def test_import_postcodes_replace_coordinates(dsn, placex_table, postcode_table, tmp_path, tokenizer):
  78     placex_table.add(country='xx', geom='POINT(10 12)',
  79                      address=dict(postcode='AB 4511'))
  80     postcode_table.add('xx', 'AB 4511', 99, 34)
  81
  82     postcodes.update_postcodes(dsn, tmp_path, tokenizer)
  83
  84     assert postcode_table.row_set == {('xx', 'AB 4511', 10, 12)}
  85
  86
  87 def test_import_postcodes_replace_coordinates_close(dsn, placex_table, postcode_table, tmp_path, tokenizer):
  88     placex_table.add(country='xx', geom='POINT(10 12)',
  89                      address=dict(postcode='AB 4511'))
  90     postcode_table.add('xx', 'AB 4511', 10, 11.99999)
  91
  92     postcodes.update_postcodes(dsn, tmp_path, tokenizer)
  93
  94     assert postcode_table.row_set == {('xx', 'AB 4511', 10, 11.99999)}
  95
  96
  97 def test_import_postcodes_remove(dsn, placex_table, postcode_table, tmp_path, tokenizer):
  98     placex_table.add(country='xx', geom='POINT(10 12)',
  99                      address=dict(postcode='AB 4511'))
 100     postcode_table.add('xx', 'badname', 10, 12)
 101
 102     postcodes.update_postcodes(dsn, tmp_path, tokenizer)
 103
 104     assert postcode_table.row_set == {('xx', 'AB 4511', 10, 12)}
 105
 106
 107 def test_import_postcodes_remove_all(dsn, placex_table, postcode_table, tmp_path, tokenizer):
 108     postcode_table.add('ch', '5613', 10, 12)
 109
 110     postcodes.update_postcodes(dsn, tmp_path, tokenizer)
 111
 112     assert not postcode_table.row_set
 113
 114
 115 def test_import_postcodes_multi_country(dsn, placex_table, postcode_table, tmp_path, tokenizer):
 116     placex_table.add(country='de', geom='POINT(10 12)',
 117                      address=dict(postcode='54451'))
 118     placex_table.add(country='cc', geom='POINT(100 56)',
 119                      address=dict(postcode='DD23 T'))
 120     placex_table.add(country='de', geom='POINT(10.3 11.0)',
 121                      address=dict(postcode='54452'))
 122     placex_table.add(country='cc', geom='POINT(10.3 11.0)',
 123                      address=dict(postcode='54452'))
 124
 125     postcodes.update_postcodes(dsn, tmp_path, tokenizer)
 126
 127     assert postcode_table.row_set == {('de', '54451', 10, 12),
 128                                       ('de', '54452', 10.3, 11.0),
 129                                       ('cc', '54452', 10.3, 11.0),
 130                                       ('cc', 'DD23 T', 100, 56)}
 131
 132
 133 @pytest.mark.parametrize("gzipped", [True, False])
 134 def test_import_postcodes_extern(dsn, placex_table, postcode_table, tmp_path,
 135                                  tokenizer, gzipped):
 136     placex_table.add(country='xx', geom='POINT(10 12)',
 137                      address=dict(postcode='AB 4511'))
 138
 139     extfile = tmp_path / 'xx_postcodes.csv'
 140     extfile.write_text("postcode,lat,lon\nAB 4511,-4,-1\nCD 4511,-5, -10")
 141
 142     if gzipped:
 143         subprocess.run(['gzip', str(extfile)])
 144         assert not extfile.is_file()
 145
 146     postcodes.update_postcodes(dsn, tmp_path, tokenizer)
 147
 148     assert postcode_table.row_set == {('xx', 'AB 4511', 10, 12),
 149                                       ('xx', 'CD 4511', -10, -5)}
 150