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#!/usr/bin/env python3
"""Unit tests."""
import os
import subprocess
import tempfile
import unittest
from typing import List
def flake8(test: str, options: List[str] = None) -> List[str]:
"""Run flake8 on test input and return output."""
with tempfile.NamedTemporaryFile(delete=False) as temp_file:
temp_file.write(test.encode('utf-8'))
process = subprocess.Popen(['flake8', '--isolated', '--select=NQA', temp_file.name] + (options or []),
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = process.communicate()
os.remove(temp_file.name)
if (stderr):
return [f'0:0:{line}' for line in stderr.decode('utf-8').splitlines()]
# print(repr(test), repr([line.split(':', 1)[1] for line in stdout.decode('utf-8').splitlines()]))
return [(line.split(':', 1)[1] if (':' in line) else line) for line in stdout.decode('utf-8').splitlines()]
class TestFileScope(unittest.TestCase):
"""Test file scope comments."""
def test_valid(self) -> None:
self.assertEqual(flake8('# flake8:noqa'), [])
self.assertEqual(flake8('# flake8: noqa'), [])
self.assertEqual(flake8('# flake8: noqa'), [])
self.assertEqual(flake8('# flake8=noqa'), [])
self.assertEqual(flake8('# flake8= noqa'), [])
self.assertEqual(flake8('# flake8= noqa'), [])
def test_no_colon(self) -> None:
self.assertEqual(flake8('# FLAKE8 NOQA'), [
'1:1: NQA012 "# FLAKE8 NOQA" must have a colon or equals, e.g. "# FLAKE8: NOQA"',
])
self.assertEqual(flake8('# FLAKE8 NOQA'), [
'1:1: NQA012 "# FLAKE8 NOQA" must have a colon or equals, e.g. "# FLAKE8: NOQA"',
])
def test_bad_colon(self) -> None:
self.assertEqual(flake8('# FLAKE8 :NOQA'), [
'1:1: NQA013 "# FLAKE8 :NOQA" must not have a space before the colon, e.g. "# FLAKE8:NOQA"',
])
self.assertEqual(flake8('# FLAKE8 : NOQA'), [
'1:1: NQA013 "# FLAKE8 : NOQA" must not have a space before the colon, e.g. "# FLAKE8: NOQA"',
])
self.assertEqual(flake8('# FLAKE8 = NOQA'), [
'1:1: NQA013 "# FLAKE8 = NOQA" must not have a space before the equals, e.g. "# FLAKE8= NOQA"',
])
def test_no_space(self) -> None:
self.assertEqual(flake8('#flake8 noqa'), [
'1:1: NQA011 "#flake8 noqa" must have a single space after the hash, e.g. "# flake8: noqa"',
'1:1: NQA012 "#flake8 noqa" must have a colon or equals, e.g. "# flake8: noqa"',
])
class TestInline(unittest.TestCase):
"""Test inline comments."""
maxDiff = None
def test_notnoqa(self) -> None:
self.assertEqual(flake8('# noqasar'), [])
self.assertEqual(flake8('# unoqa'), [])
def test_valid(self) -> None:
self.assertEqual(flake8('x=1 # noqa'), [])
self.assertEqual(flake8('x=1 # noqa:'), [])
self.assertEqual(flake8('x=1 # noqa this is not a code'), [])
self.assertEqual(flake8('x=1 # noqa - X101 is not a code'), [])
def test_space(self) -> None:
self.assertEqual(flake8('x=1 #NOQA'), [
'1:5: NQA001 "#NOQA" must have a single space after the hash, e.g. "# NOQA"',
])
self.assertEqual(flake8('x=1 # NOQA'), [
'1:5: NQA001 "# NOQA" must have a single space after the hash, e.g. "# NOQA"',
])
def test_valid_codes(self) -> None:
self.assertEqual(flake8('x=1 # noqa:E225'), [])
self.assertEqual(flake8('x=1 # noqa: E225'), [])
self.assertEqual(flake8('x=1 # noqa: E225,'), [])
self.assertEqual(flake8('x=1 # noqa: E225, E261'), [])
self.assertEqual(flake8('x=1 # noqa: E225, E261,'), [])
self.assertEqual(flake8('x=1 # noqa: E225, , E261 , , '), [])
def test_no_colon(self) -> None:
self.assertEqual(flake8('x=1 # noqa E225'), [
'1:5: NQA002 "# noqa E225" must have a colon, e.g. "# noqa: E225"',
])
self.assertEqual(flake8('x=1 #noqa E225'), [
'1:5: NQA001 "#noqa E225" must have a single space after the hash, e.g. "# noqa: E225"',
'1:5: NQA002 "#noqa E225" must have a colon, e.g. "# noqa: E225"',
])
self.assertEqual(flake8('x=1 # noqa E225'), [
'1:5: NQA002 "# noqa E225" must have a colon, e.g. "# noqa: E225"',
'1:5: NQA004 "# noqa E225" must have at most one space before the codes, e.g. "# noqa: E225"',
])
self.assertEqual(flake8('x=1 # noqa E225, E261'), [
'1:5: NQA002 "# noqa E225, E261" must have a colon, e.g. "# noqa: E225, E261"',
])
def test_bad_colon(self) -> None:
self.assertEqual(flake8('x=1 # noqa : E225'), [
'1:5: NQA003 "# noqa : E225" must not have a space before the colon, e.g. "# noqa: E225"',
])
self.assertEqual(flake8('x=1 #noqa : E225'), [
'1:5: NQA001 "#noqa : E225" must have a single space after the hash, e.g. "# noqa: E225"',
'1:5: NQA003 "#noqa : E225" must not have a space before the colon, e.g. "# noqa: E225"',
])
self.assertEqual(flake8('x=1 # noqa : E225'), [
'1:5: NQA003 "# noqa : E225" must not have a space before the colon, e.g. "# noqa: E225"',
'1:5: NQA004 "# noqa : E225" must have at most one space before the codes, e.g. "# noqa: E225"',
])
self.assertEqual(flake8('x=1 # noqa : E225, E261'), [
'1:5: NQA003 "# noqa : E225, E261" must not have a space before the colon, e.g. "# noqa: E225, E261"',
])
def test_codes(self) -> None:
self.assertEqual(flake8('x=1 # noqa: X101'), [
'1:5: NQA102 "# noqa: X101" has no matching violations',
])
self.assertEqual(flake8('x=1 # noqa: E225, X101'), [
'1:5: NQA103 "# noqa: E225, X101" has unmatched code, remove X101',
])
self.assertEqual(flake8('x=1 # noqa: E225, E225'), [
'1:5: NQA005 "# noqa: E225, E225" has duplicate codes, remove E225',
])
def test_multiline(self) -> None:
self.assertEqual(flake8("x='''\n''' # noqa: E225"), [])
self.assertEqual(flake8("x='''\n''', # noqa: E225"), [])
def test_double(self) -> None:
self.assertEqual(flake8('x=1 # type: ignore[type] # noqa: X101'), [
'1:5: NQA102 "# noqa: X101" has no matching violations',
])
def test_require_code(self) -> None:
self.assertEqual(flake8('x=1 # noqa', ['--noqa-require-code']), [
'1:5: NQA104 "# noqa" must have codes, e.g. "# noqa: D100, E225, E261, W292"',
])
def test_inlude_name(self) -> None:
self.assertEqual(flake8('x=1 # noqa E225', ['--noqa-include-name']), [
'1:5: NQA002 (flake8-noqa) "# noqa E225" must have a colon, e.g. "# noqa: E225"',
])
if __name__ == '__main__':
unittest.main()
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