Greg DiCristofaro 20c799ddcc testing
2020-07-22 15:32:51 -04:00

42 lines
1.6 KiB
Python

import codecs
import os
import unittest
from typing import TypeVar, List
from csvutil import records_to_csv, csv_to_records
from test.unittestutil import get_output_path
class CsvUtilTest(unittest.TestCase):
T = TypeVar('T')
def assert_equal_arr(self, a: List[T], b: List[T]):
self.assertEqual(len(a), len(b), 'arrays are not equal length')
for i in range(0, len(a)):
if isinstance(a[i], list) and isinstance(b[i], list):
self.assert_equal_arr(a[i], b[i])
else:
self.assertEqual(a[i], b[i], "Items: {0} and {1} at index {2} are not equal.".format(a[i], b[i], i))
def test_read_write(self):
data = [['header1', 'header2', 'header3', 'additional header'],
['data1', 'data2', 'data3'],
['', 'data2-1', 'data2-2']]
os.makedirs(get_output_path(), exist_ok=True)
test_path = get_output_path('test.csv')
records_to_csv(test_path, data)
byte_inf = min(32, os.path.getsize(test_path))
with open(test_path, 'rb') as bom_test_file:
raw = bom_test_file.read(byte_inf)
if not raw.startswith(codecs.BOM_UTF8):
self.fail("written csv does not have appropriate BOM")
read_records_no_header, no_header = csv_to_records(test_path, header_row=False)
self.assert_equal_arr(read_records_no_header, data)
read_rows, header = csv_to_records(test_path, header_row=True)
self.assert_equal_arr(header, data[0])
self.assert_equal_arr(read_rows, [data[1], data[2]])