X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/abdba5fdc7b6313f5dad4e2692344482359e5ce9..02d357d29e40a8dfe5bc8eb4eac35c3ad3cc0958:/test/python/test_tools_import_special_phrases.py diff --git a/test/python/test_tools_import_special_phrases.py b/test/python/test_tools_import_special_phrases.py index 4890e0b2..f0a34b08 100644 --- a/test/python/test_tools_import_special_phrases.py +++ b/test/python/test_tools_import_special_phrases.py @@ -1,160 +1,141 @@ """ Tests for import special phrases methods - of the class SpecialPhrasesImporter. + of the class SPImporter. """ -from mocks import MockParamCapture -from nominatim.errors import UsageError -from pathlib import Path -import tempfile from shutil import copyfile import pytest -from nominatim.tools.special_phrases import SpecialPhrasesImporter +from nominatim.tools.special_phrases.sp_importer import SPImporter +from nominatim.tools.special_phrases.sp_wiki_loader import SPWikiLoader +from nominatim.tools.special_phrases.special_phrase import SpecialPhrase +from nominatim.errors import UsageError -TEST_BASE_DIR = Path(__file__) / '..' / '..' +from cursor import CursorForTesting -def test_fetch_existing_words_phrases_basic(special_phrases_importer, word_table, - temp_db_cursor): - """ - Check for the fetch_existing_words_phrases() method. - It should return special phrase term added to the word - table. +@pytest.fixture +def testfile_dir(src_dir): + return src_dir / 'test' / 'testfiles' + + +@pytest.fixture +def sp_importer(temp_db_conn, def_config, temp_phplib_dir_with_migration): """ - query =""" - INSERT INTO word VALUES(99999, 'lookup_token', 'normalized_word', - 'class', 'type', null, 0, 'near'); + Return an instance of SPImporter. """ - temp_db_cursor.execute(query) + loader = SPWikiLoader(def_config, ['en']) + return SPImporter(def_config, temp_phplib_dir_with_migration, temp_db_conn, loader) - assert not special_phrases_importer.words_phrases_to_delete - special_phrases_importer._fetch_existing_words_phrases() - contained_phrase = special_phrases_importer.words_phrases_to_delete.pop() - assert contained_phrase == ('normalized_word', 'class', 'type', 'near') -@pytest.mark.parametrize("house_type", ['house', 'postcode']) -def test_fetch_existing_words_phrases_special_cases(special_phrases_importer, word_table, - house_type, temp_db_cursor): +@pytest.fixture +def temp_phplib_dir_with_migration(src_dir, tmp_path): + """ + Return temporary phpdir with migration subdirectory and + PhraseSettingsToJson.php script inside. """ - Check for the fetch_existing_words_phrases() method. - It should return nothing as the terms added correspond - to a housenumber and postcode term. + migration_file = (src_dir / 'lib-php' / 'migration' / 'PhraseSettingsToJson.php').resolve() + + phpdir = tmp_path / 'tempphp' + phpdir.mkdir() + + (phpdir / 'migration').mkdir() + migration_dest_path = (phpdir / 'migration' / 'PhraseSettingsToJson.php').resolve() + copyfile(str(migration_file), str(migration_dest_path)) + + return phpdir + + +@pytest.fixture +def xml_wiki_content(src_dir): """ - query =""" - INSERT INTO word VALUES(99999, 'lookup_token', 'normalized_word', - 'place', %s, null, 0, 'near'); + return the content of the static xml test file. """ - temp_db_cursor.execute(query, (house_type,)) + xml_test_content = src_dir / 'test' / 'testdata' / 'special_phrases_test_content.txt' + return xml_test_content.read_text() + + +@pytest.fixture +def default_phrases(table_factory): + table_factory('place_classtype_testclasstypetable_to_delete') + table_factory('place_classtype_testclasstypetable_to_keep') - special_phrases_importer._fetch_existing_words_phrases() - assert not special_phrases_importer.words_phrases_to_delete -def test_fetch_existing_place_classtype_tables(special_phrases_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') - special_phrases_importer._fetch_existing_place_classtype_tables() - contained_table = special_phrases_importer.table_phrases_to_delete.pop() + sp_importer._fetch_existing_place_classtype_tables() + contained_table = sp_importer.table_phrases_to_delete.pop() assert contained_table == 'place_classtype_testclasstypetable' -def test_check_sanity_class(special_phrases_importer): +def test_check_sanity_class(sp_importer): """ Check for _check_sanity() method. If a wrong class or type is given, an UsageError should raise. If a good class and type are given, nothing special happens. """ - - assert not special_phrases_importer._check_sanity('en', '', 'type') - assert not special_phrases_importer._check_sanity('en', 'class', '') - assert special_phrases_importer._check_sanity('en', 'class', 'type') + assert not sp_importer._check_sanity(SpecialPhrase('en', '', 'type', '')) + assert not sp_importer._check_sanity(SpecialPhrase('en', 'class', '', '')) -def test_load_white_and_black_lists(special_phrases_importer): + assert sp_importer._check_sanity(SpecialPhrase('en', 'class', 'type', '')) + +def test_load_white_and_black_lists(sp_importer): """ Test that _load_white_and_black_lists() well return black list and white list and that they are of dict type. """ - black_list, white_list = special_phrases_importer._load_white_and_black_lists() + black_list, white_list = sp_importer._load_white_and_black_lists() assert isinstance(black_list, dict) and isinstance(white_list, dict) -def test_convert_php_settings(special_phrases_importer): +def test_convert_php_settings(sp_importer, testfile_dir, tmp_path): """ Test that _convert_php_settings_if_needed() convert the given php file to a json file. """ - php_file = (TEST_BASE_DIR / 'testfiles' / 'phrase_settings.php').resolve() + php_file = (testfile_dir / 'phrase_settings.php').resolve() - with tempfile.TemporaryDirectory() as temp_dir: - temp_settings = (Path(temp_dir) / 'phrase_settings.php').resolve() - copyfile(php_file, temp_settings) - special_phrases_importer._convert_php_settings_if_needed(temp_settings) + temp_settings = (tmp_path / 'phrase_settings.php').resolve() + copyfile(php_file, temp_settings) + sp_importer._convert_php_settings_if_needed(temp_settings) - assert (Path(temp_dir) / 'phrase_settings.json').is_file() + assert (tmp_path / 'phrase_settings.json').is_file() -def test_convert_settings_wrong_file(special_phrases_importer): +def test_convert_settings_wrong_file(sp_importer): """ Test that _convert_php_settings_if_needed() raise an exception if the given file is not a valid file. """ with pytest.raises(UsageError, match='random_file is not a valid file.'): - special_phrases_importer._convert_php_settings_if_needed('random_file') + sp_importer._convert_php_settings_if_needed('random_file') -def test_convert_settings_json_already_exist(special_phrases_importer): +def test_convert_settings_json_already_exist(sp_importer, testfile_dir): """ Test that if we give to '_convert_php_settings_if_needed' a php file path and that a the corresponding json file already exists, it is returned. """ - php_file = (TEST_BASE_DIR / 'testfiles' / 'phrase_settings.php').resolve() - json_file = (TEST_BASE_DIR / 'testfiles' / 'phrase_settings.json').resolve() + php_file = (testfile_dir / 'phrase_settings.php').resolve() + json_file = (testfile_dir / 'phrase_settings.json').resolve() - returned = special_phrases_importer._convert_php_settings_if_needed(php_file) + returned = sp_importer._convert_php_settings_if_needed(php_file) assert returned == json_file -def test_convert_settings_giving_json(special_phrases_importer): +def test_convert_settings_giving_json(sp_importer, testfile_dir): """ Test that if we give to '_convert_php_settings_if_needed' a json file path the same path is directly returned """ - json_file = (TEST_BASE_DIR / 'testfiles' / 'phrase_settings.json').resolve() - - returned = special_phrases_importer._convert_php_settings_if_needed(json_file) - - assert returned == json_file + json_file = (testfile_dir / 'phrase_settings.json').resolve() -def test_process_amenity_with_operator(special_phrases_importer, getorcreate_amenityoperator_funcs, - temp_db_conn, word_table): - """ - Test that _process_amenity() execute well the - getorcreate_amenityoperator() SQL function and that - the 2 differents operators are well handled. - """ - special_phrases_importer._process_amenity('', '', '', '', 'near') - special_phrases_importer._process_amenity('', '', '', '', 'in') - - with temp_db_conn.cursor() as temp_db_cursor: - temp_db_cursor.execute("SELECT * FROM word WHERE operator='near' OR operator='in'") - results = temp_db_cursor.fetchall() + returned = sp_importer._convert_php_settings_if_needed(json_file) - assert len(results) == 2 - -def test_process_amenity_without_operator(special_phrases_importer, getorcreate_amenity_funcs, - temp_db_conn, word_table): - """ - Test that _process_amenity() execute well the - getorcreate_amenity() SQL function. - """ - special_phrases_importer._process_amenity('', '', '', '', '') - - with temp_db_conn.cursor() as temp_db_cursor: - temp_db_cursor.execute("SELECT * FROM word WHERE operator='no_operator'") - result = temp_db_cursor.fetchone() - - assert result + assert returned == json_file -def test_create_place_classtype_indexes(temp_db_conn, special_phrases_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. @@ -163,44 +144,41 @@ def test_create_place_classtype_indexes(temp_db_conn, special_phrases_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') - special_phrases_importer._create_place_classtype_indexes('', phrase_class, phrase_type) + sp_importer._create_place_classtype_indexes('', phrase_class, phrase_type) assert check_placeid_and_centroid_indexes(temp_db_conn, phrase_class, phrase_type) -def test_create_place_classtype_table(temp_db_conn, placex_table, special_phrases_importer): +def test_create_place_classtype_table(temp_db_conn, placex_table, sp_importer): """ Test that _create_place_classtype_table() create the right place_classtype table. """ phrase_class = 'class' phrase_type = 'type' - special_phrases_importer._create_place_classtype_table('', phrase_class, phrase_type) + sp_importer._create_place_classtype_table('', phrase_class, phrase_type) assert check_table_exist(temp_db_conn, phrase_class, phrase_type) -def test_grant_access_to_web_user(temp_db_conn, def_config, special_phrases_importer): +def test_grant_access_to_web_user(temp_db_conn, table_factory, def_config, sp_importer): """ - Test that _grant_access_to_webuser() give + Test that _grant_access_to_webuser() give right access to the web user. """ phrase_class = 'class' 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) - special_phrases_importer._grant_access_to_webuser(phrase_class, phrase_type) + sp_importer._grant_access_to_webuser(phrase_class, phrase_type) assert check_grant_access(temp_db_conn, def_config.DATABASE_WEBUSER, phrase_class, phrase_type) def test_create_place_classtype_table_and_indexes( temp_db_conn, def_config, placex_table, - special_phrases_importer): + sp_importer): """ Test that _create_place_classtype_table_and_indexes() create the right place_classtype tables and place_id indexes @@ -209,32 +187,15 @@ def test_create_place_classtype_table_and_indexes( """ pairs = set([('class1', 'type1'), ('class2', 'type2')]) - special_phrases_importer._create_place_classtype_table_and_indexes(pairs) + sp_importer._create_place_classtype_table_and_indexes(pairs) for pair in pairs: assert check_table_exist(temp_db_conn, pair[0], pair[1]) assert check_placeid_and_centroid_indexes(temp_db_conn, pair[0], pair[1]) assert check_grant_access(temp_db_conn, def_config.DATABASE_WEBUSER, pair[0], pair[1]) -def test_process_xml_content(temp_db_conn, def_config, special_phrases_importer, word_table, - getorcreate_amenity_funcs, getorcreate_amenityoperator_funcs): - """ - Test that _process_xml_content() process the given xml content right - by executing the right SQL functions for amenities and - by returning the right set of pairs. - """ - class_test = 'aerialway' - type_test = 'zip_line' - - #Converted output set to a dict for easy assert further. - results = dict(special_phrases_importer._process_xml_content(get_test_xml_wiki_content(), 'en')) - - assert check_amenities_with_op(temp_db_conn) - assert check_amenities_without_op(temp_db_conn) - assert results[class_test] and type_test in results.values() - -def test_remove_non_existent_phrases_from_db(special_phrases_importer, default_phrases, - temp_db_conn): +def test_remove_non_existent_tables_from_db(sp_importer, default_phrases, + temp_db_conn): """ Check for the remove_non_existent_phrases_from_db() method. @@ -245,67 +206,48 @@ def test_remove_non_existent_phrases_from_db(special_phrases_importer, default_p place_classtype tables contained in table_phrases_to_delete should be deleted. """ - with temp_db_conn.cursor() as temp_db_cursor: - to_delete_phrase_tuple = ('normalized_word', 'class', 'type', 'near') - to_keep_phrase_tuple = ( - 'normalized_word_exists', 'class_exists', 'type_exists', 'near' - ) - special_phrases_importer.words_phrases_to_delete = { - to_delete_phrase_tuple, - to_keep_phrase_tuple - } - special_phrases_importer.words_phrases_still_exist = { - to_keep_phrase_tuple - } - special_phrases_importer.table_phrases_to_delete = { - 'place_classtype_testclasstypetable_to_delete' - } - - query_words = 'SELECT word, class, type, operator FROM word;' - query_tables = """ - SELECT table_name - FROM information_schema.tables - WHERE table_schema='public' - AND table_name like 'place_classtype_%'; - """ - - special_phrases_importer._remove_non_existent_phrases_from_db() - - temp_db_cursor.execute(query_words) - words_result = temp_db_cursor.fetchall() - temp_db_cursor.execute(query_tables) - tables_result = temp_db_cursor.fetchall() - assert len(words_result) == 1 and words_result[0] == [ - 'normalized_word_exists', 'class_exists', 'type_exists', 'near' - ] - assert (len(tables_result) == 1 and - tables_result[0][0] == 'place_classtype_testclasstypetable_to_keep' - ) - -def test_import_from_wiki(monkeypatch, temp_db_conn, def_config, special_phrases_importer, placex_table, - getorcreate_amenity_funcs, getorcreate_amenityoperator_funcs, word_table): - """ - Check that the main import_from_wiki() method is well executed. + 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_%'; + """ + + 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', )} + + +@pytest.mark.parametrize("should_replace", [(True), (False)]) +def test_import_phrases(monkeypatch, temp_db_conn, def_config, sp_importer, + placex_table, table_factory, tokenizer_mock, + xml_wiki_content, 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, grand access to the web user and executing the SQL functions for amenities. - It should also update the database well by deleting or preserving existing entries + It should also update the database well by deleting or preserving existing entries of the database. """ #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(""" - INSERT INTO word VALUES(99999, ' animal shelter', 'animal shelter', - 'amenity', 'animal_shelter', null, 0, null); + table_factory('place_classtype_amenity_animal_shelter') + table_factory('place_classtype_wrongclass_wrongtype') - INSERT INTO word VALUES(99999, ' wrong_lookup_token', 'wrong_normalized_word', - 'wrong_class', 'wrong_type', null, 0, 'near'); + monkeypatch.setattr('nominatim.tools.special_phrases.sp_wiki_loader.SPWikiLoader._get_wiki_content', + lambda self, lang: xml_wiki_content) - CREATE TABLE place_classtype_amenity_animal_shelter(); - CREATE TABLE place_classtype_wrongclass_wrongtype();""") + tokenizer = tokenizer_mock() + sp_importer.import_phrases(tokenizer, should_replace) - monkeypatch.setattr('nominatim.tools.special_phrases.SpecialPhrasesImporter._get_wiki_content', mock_get_wiki_content) - special_phrases_importer.import_from_wiki(['en']) + assert len(tokenizer.analyser_cache['special_phrases']) == 18 class_test = 'aerialway' type_test = 'zip_line' @@ -313,77 +255,21 @@ def test_import_from_wiki(monkeypatch, temp_db_conn, def_config, special_phrases assert check_table_exist(temp_db_conn, class_test, type_test) assert check_placeid_and_centroid_indexes(temp_db_conn, class_test, type_test) assert check_grant_access(temp_db_conn, def_config.DATABASE_WEBUSER, class_test, type_test) - assert check_amenities_with_op(temp_db_conn) - assert check_amenities_without_op(temp_db_conn) assert check_table_exist(temp_db_conn, 'amenity', 'animal_shelter') - 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 the correct phrase already in the word table before is still there. - query_correct_word = "SELECT * FROM word WHERE word = 'animal shelter'" - queries_tests.add((query_correct_word, True)) - - #Used to check if wrong phrase was deleted from the word table of the database. - query_wrong_word = "SELECT word FROM word WHERE word = 'wrong_normalized_word'" - queries_tests.add((query_wrong_word, False)) - - #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'; - """ - queries_tests.add((query_wrong_table, False)) - - 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() + if should_replace: + assert not check_table_exist(temp_db_conn, 'wrong_class', 'wrong_type') -def mock_get_wiki_content(lang): - """ - Mock the _get_wiki_content() method to return - static xml test file content. - """ - return get_test_xml_wiki_content() - -def get_test_xml_wiki_content(): - """ - return the content of the static xml test file. - """ - xml_test_content_path = (TEST_BASE_DIR / 'testdata' / 'special_phrases_test_content.txt').resolve() - with open(xml_test_content_path) as xml_content_reader: - return xml_content_reader.read() + assert temp_db_conn.table_exists('place_classtype_amenity_animal_shelter') + if should_replace: + assert not temp_db_conn.table_exists('place_classtype_wrongclass_wrongtype') 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): """ @@ -412,90 +298,3 @@ def check_placeid_and_centroid_indexes(temp_db_conn, phrase_class, phrase_type): and temp_db_conn.index_exists(index_prefix + 'place_id') ) - -def check_amenities_with_op(temp_db_conn): - """ - Check that the test table for the SQL function getorcreate_amenityoperator() - contains more than one value (so that the SQL function was call more than one time). - """ - with temp_db_conn.cursor() as temp_db_cursor: - temp_db_cursor.execute("SELECT * FROM word WHERE operator != 'no_operator'") - return len(temp_db_cursor.fetchall()) > 1 - -def check_amenities_without_op(temp_db_conn): - """ - Check that the test table for the SQL function getorcreate_amenity() - contains more than one value (so that the SQL function was call more than one time). - """ - with temp_db_conn.cursor() as temp_db_cursor: - temp_db_cursor.execute("SELECT * FROM word WHERE operator = 'no_operator'") - return len(temp_db_cursor.fetchall()) > 1 - -@pytest.fixture -def special_phrases_importer(temp_db_conn, def_config, temp_phplib_dir_with_migration): - """ - Return an instance of SpecialPhrasesImporter. - """ - return SpecialPhrasesImporter(def_config, temp_phplib_dir_with_migration, temp_db_conn) - -@pytest.fixture -def temp_phplib_dir_with_migration(): - """ - Return temporary phpdir with migration subdirectory and - PhraseSettingsToJson.php script inside. - """ - migration_file = (TEST_BASE_DIR / '..' / 'lib-php' / 'migration' - / 'PhraseSettingsToJson.php').resolve() - with tempfile.TemporaryDirectory() as phpdir: - (Path(phpdir) / 'migration').mkdir() - migration_dest_path = (Path(phpdir) / 'migration' / 'PhraseSettingsToJson.php').resolve() - copyfile(migration_file, migration_dest_path) - - yield Path(phpdir) - -@pytest.fixture -def default_phrases(word_table, temp_db_cursor): - temp_db_cursor.execute(""" - INSERT INTO word VALUES(99999, 'lookup_token', 'normalized_word', - 'class', 'type', null, 0, 'near'); - - INSERT INTO word VALUES(99999, 'lookup_token', 'normalized_word_exists', - 'class_exists', 'type_exists', null, 0, 'near'); - - CREATE TABLE place_classtype_testclasstypetable_to_delete(); - CREATE TABLE place_classtype_testclasstypetable_to_keep();""") - -@pytest.fixture -def make_strandard_name_func(temp_db_cursor): - temp_db_cursor.execute(""" - CREATE OR REPLACE FUNCTION make_standard_name(name TEXT) RETURNS TEXT AS $$ - BEGIN - RETURN trim(name); --Basically return only the trimed name for the tests - END; - $$ LANGUAGE plpgsql IMMUTABLE;""") - -@pytest.fixture -def getorcreate_amenity_funcs(temp_db_cursor, make_strandard_name_func): - temp_db_cursor.execute(""" - CREATE OR REPLACE FUNCTION getorcreate_amenity(lookup_word TEXT, normalized_word TEXT, - lookup_class text, lookup_type text) - RETURNS void as $$ - BEGIN - INSERT INTO word VALUES(null, lookup_word, normalized_word, - lookup_class, lookup_type, null, 0, 'no_operator'); - END; - $$ LANGUAGE plpgsql""") - -@pytest.fixture -def getorcreate_amenityoperator_funcs(temp_db_cursor, make_strandard_name_func): - temp_db_cursor.execute(""" - CREATE TABLE temp_with_operator(op TEXT); - - CREATE OR REPLACE FUNCTION getorcreate_amenityoperator(lookup_word TEXT, normalized_word TEXT, - lookup_class text, lookup_type text, op text) - RETURNS void as $$ - BEGIN - INSERT INTO word VALUES(null, lookup_word, normalized_word, - lookup_class, lookup_type, null, 0, op); - END; - $$ LANGUAGE plpgsql""") \ No newline at end of file