from csv import reader from io import StringIO from unittest.mock import mock_open, patch import pytest # type: ignore import redshift_connector from redshift_connector import DataError, InterfaceError @pytest.mark.parametrize("col_name", (("apples", "apples"), ("author‎ ", "author\u200e"))) def test_get_description(db_kwargs, col_name) -> None: given_col_name, exp_col_name = col_name with redshift_connector.connect(**db_kwargs) as conn: with conn.cursor() as cursor: cursor.execute("create temp table tmptbl({} int)".format(given_col_name)) cursor.execute("select * from tmptbl") assert cursor.description is not None assert cursor.description[0][0] == exp_col_name @pytest.mark.parametrize( "col_names", ( ("(c1 int, c2 int, c3 int)", ("c1", "c2", "c3")), ( "(áppleṣ int, orañges int, passion⁘fruit int, papaya  int, bañanaș int)", ("áppleṣ", "orañges", "passion⁘fruit", "papaya\u205f", "bañanaș"), ), ), ) def test_get_description_multiple_column_names(db_kwargs, col_names) -> None: given_col_names, exp_col_names = col_names with redshift_connector.connect(**db_kwargs) as conn: with conn.cursor() as cursor: cursor.execute("create temp table tmptbl {}".format(given_col_names)) cursor.execute("select * from tmptbl") assert cursor.description is not None for cidx, column in enumerate(cursor.description): assert column[0] == exp_col_names[cidx] @patch("builtins.open", new_callable=mock_open) def test_insert_data_invalid_column_raises(mocked_csv, db_kwargs) -> None: mocked_csv.side_effect = [StringIO("""\col1,col2,col3\n1,3,foo\n2,5,bar\n-1,7,baz""")] with redshift_connector.connect(**db_kwargs) as conn: with conn.cursor() as cursor: cursor.execute("create temporary table githubissue161 (id int)") with pytest.raises( InterfaceError, match="Invalid column name. No results were returned when performing column name validity check.", ): cursor.insert_data_bulk( filename="mocked_csv", table_name="githubissue161", parameter_indices=[0], column_names=["IncorrectColumnName"], delimiter=",", batch_size=3, ) @patch("builtins.open", new_callable=mock_open) def test_insert_data_invalid_schema_raises(mocked_csv, db_kwargs) -> None: mocked_csv.side_effect = [StringIO("""\col1,col2,col3\n1,3,foo\n2,5,bar\n-1,7,baz""")] with redshift_connector.connect(**db_kwargs) as conn: with conn.cursor() as cursor: cursor.execute("create table public.githubissue161 (id int)") with pytest.raises( InterfaceError, match="Invalid table name passed to insert_data_bulk: githubissue198.githubissue161", ): cursor.insert_data_bulk( filename="mocked_csv", table_name="githubissue198.githubissue161", parameter_indices=[0], column_names=["id"], delimiter=",", batch_size=3, ) def test_insert_data_valid_schema_does_not_raise(db_kwargs) -> None: with redshift_connector.connect(**db_kwargs) as conn: with conn.cursor() as cursor: cursor.execute("create table public.githubissue198 (id int)") with patch( "builtins.open", mock_open(read_data="\col1,col2,col3\n1,3,foo\n2,5,bar\n-1,7,baz") ) as mock_file: cursor.insert_data_bulk( filename="mocked_csv", table_name="public.githubissue198", parameter_indices=[0], column_names=["id"], delimiter=",", batch_size=2, ) cursor.execute("select * from public.githubissue198 order by id asc") res = cursor.fetchall() assert len(res) == 3 assert res == ([-1], [1], [2]) # max binding parameters for a prepared statement max_params = 32767 def test_insert_data_raises_too_many_params(db_kwargs) -> None: prepared_stmt = "INSERT INTO githubissue165 (col1) VALUES " + "(%s), " * max_params + "(%s);" params = [1 for _ in range(max_params + 1)] with redshift_connector.connect(**db_kwargs) as conn: with conn.cursor() as cursor: cursor.execute("create temporary table githubissue165 (col1 int)") with pytest.raises( DataError, match=f"Prepared statement exceeds bind parameter limit 32767. {32768} bind parameters were " f"provided.", ): cursor.execute(prepared_stmt, params) def test_insert_data_raises_no_exception(db_kwargs) -> None: prepared_stmt_32767 = "INSERT INTO githubissue165 (col1) VALUES " + "(%s), " * (max_params - 1) + "(%s);" params_32767 = [1 for _ in range(max_params)] prepared_stmt_32766 = "INSERT INTO githubissue165 (col1) VALUES " + "(%s), " * (max_params - 2) + "(%s);" params_32766 = [1 for _ in range(max_params - 1)] with redshift_connector.connect(**db_kwargs) as conn: with conn.cursor() as cursor: cursor.execute("create temporary table githubissue165 (col1 int)") try: cursor.execute(prepared_stmt_32767, params_32767) except Exception as e: assert False, f"'execute' with {max_params} bind parameters raised an exception {e}" try: cursor.execute(prepared_stmt_32766, params_32766) except Exception as e: assert False, f"'execute' with {max_params - 1} bind parameters raised an exception {e}" indices, names = ( [0], ["col1"], ) @patch("builtins.open", new_callable=mock_open) def test_insert_data_bulk_raises_too_many_params(mocked_csv, db_kwargs) -> None: csv_str = "\col1\n" + "1\n" * max_params + "1" # 32768 rows mocked_csv.side_effect = [StringIO(csv_str)] with redshift_connector.connect(**db_kwargs) as conn: with conn.cursor() as cursor: cursor.execute("create table githubissue165 (col1 int)") with pytest.raises( DataError, match="Prepared statement exceeds bind parameter limit 32767.", ): cursor.insert_data_bulk( filename="mocked_csv", table_name="githubissue165", parameter_indices=indices, column_names=["col1"], delimiter=",", batch_size=max_params + 1, ) @patch("builtins.open", new_callable=mock_open) def test_insert_data_bulk_raises_no_exception_32766(mocked_csv_32766, db_kwargs) -> None: csv_str_32766 = "\col1\n" + "1\n" * (max_params - 2) + "1" mocked_csv_32766.side_effect = [StringIO(csv_str_32766)] with redshift_connector.connect(**db_kwargs) as conn: with conn.cursor() as cursor: cursor.execute("create table githubissue165 (col1 int)") try: cursor.insert_data_bulk( filename="mocked_csv_32766", table_name="githubissue165", parameter_indices=indices, column_names=["col1"], delimiter=",", batch_size=max_params - 1, ) except Exception as e: assert False, f"'insert_data_bulk' with {max_params - 1} bind parameters raised an exception {e}" @patch("builtins.open", new_callable=mock_open) def test_insert_data_bulk_raises_no_exception_32767(mocked_csv_32767, db_kwargs) -> None: csv_str_32767 = "\col1\n" + "1\n" * (max_params - 1) + "1" mocked_csv_32767.side_effect = [StringIO(csv_str_32767)] with redshift_connector.connect(**db_kwargs) as conn: with conn.cursor() as cursor: cursor.execute("create table githubissue165 (col1 int)") try: cursor.insert_data_bulk( filename="mocked_csv_32767", table_name="githubissue165", parameter_indices=indices, column_names=["col1"], delimiter=",", batch_size=max_params, ) except Exception as e: assert False, f"'insert_data_bulk' with {max_params} bind parameters raised an exception {e}"