mirror of https://github.com/python/cpython.git
63 lines
1.9 KiB
Python
63 lines
1.9 KiB
Python
from unittest import TestCase
|
|
|
|
from _pyrepl.utils import str_width, wlen, prev_next_window
|
|
|
|
|
|
class TestUtils(TestCase):
|
|
def test_str_width(self):
|
|
characters = ['a', '1', '_', '!', '\x1a', '\u263A', '\uffb9']
|
|
for c in characters:
|
|
self.assertEqual(str_width(c), 1)
|
|
|
|
characters = [chr(99989), chr(99999)]
|
|
for c in characters:
|
|
self.assertEqual(str_width(c), 2)
|
|
|
|
def test_wlen(self):
|
|
for c in ['a', 'b', '1', '!', '_']:
|
|
self.assertEqual(wlen(c), 1)
|
|
self.assertEqual(wlen('\x1a'), 2)
|
|
|
|
char_east_asian_width_N = chr(3800)
|
|
self.assertEqual(wlen(char_east_asian_width_N), 1)
|
|
char_east_asian_width_W = chr(4352)
|
|
self.assertEqual(wlen(char_east_asian_width_W), 2)
|
|
|
|
self.assertEqual(wlen('hello'), 5)
|
|
self.assertEqual(wlen('hello' + '\x1a'), 7)
|
|
|
|
def test_prev_next_window(self):
|
|
def gen_normal():
|
|
yield 1
|
|
yield 2
|
|
yield 3
|
|
yield 4
|
|
|
|
pnw = prev_next_window(gen_normal())
|
|
self.assertEqual(next(pnw), (None, 1, 2))
|
|
self.assertEqual(next(pnw), (1, 2, 3))
|
|
self.assertEqual(next(pnw), (2, 3, 4))
|
|
self.assertEqual(next(pnw), (3, 4, None))
|
|
with self.assertRaises(StopIteration):
|
|
next(pnw)
|
|
|
|
def gen_short():
|
|
yield 1
|
|
|
|
pnw = prev_next_window(gen_short())
|
|
self.assertEqual(next(pnw), (None, 1, None))
|
|
with self.assertRaises(StopIteration):
|
|
next(pnw)
|
|
|
|
def gen_raise():
|
|
yield from gen_normal()
|
|
1/0
|
|
|
|
pnw = prev_next_window(gen_raise())
|
|
self.assertEqual(next(pnw), (None, 1, 2))
|
|
self.assertEqual(next(pnw), (1, 2, 3))
|
|
self.assertEqual(next(pnw), (2, 3, 4))
|
|
self.assertEqual(next(pnw), (3, 4, None))
|
|
with self.assertRaises(ZeroDivisionError):
|
|
next(pnw)
|