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test_ext_napoleon_iterators.py
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test_ext_napoleon_iterators.py
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"""Tests for :mod:`sphinx.ext.napoleon.iterators` module."""
import sys
from unittest import TestCase
from sphinx.deprecation import RemovedInSphinx70Warning
from sphinx.ext.napoleon.iterators import modify_iter, peek_iter
class ModuleIsDeprecatedTest(TestCase):
def test_module_is_deprecated(self):
sys.modules.pop("sphinx.ext.napoleon.iterators")
with self.assertWarns(RemovedInSphinx70Warning):
import sphinx.ext.napoleon.iterators # noqa
class BaseIteratorsTest(TestCase):
def assertEqualTwice(self, expected, func, *args):
self.assertEqual(expected, func(*args))
self.assertEqual(expected, func(*args))
def assertFalseTwice(self, func, *args):
self.assertFalse(func(*args))
self.assertFalse(func(*args))
def assertNext(self, it, expected, is_last):
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(expected, it.peek)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(expected, it.peek)
self.assertTrueTwice(it.has_next)
self.assertEqual(expected, next(it))
if is_last:
self.assertFalseTwice(it.has_next)
self.assertRaisesTwice(StopIteration, it.next)
else:
self.assertTrueTwice(it.has_next)
def assertRaisesTwice(self, exc, func, *args):
self.assertRaises(exc, func, *args)
self.assertRaises(exc, func, *args)
def assertTrueTwice(self, func, *args):
self.assertTrue(func(*args))
self.assertTrue(func(*args))
class PeekIterTest(BaseIteratorsTest):
def test_init_with_sentinel(self):
a = iter(['1', '2', 'DONE'])
sentinel = 'DONE'
self.assertRaises(TypeError, peek_iter, a, sentinel)
def get_next():
return next(a)
it = peek_iter(get_next, sentinel)
self.assertEqual(it.sentinel, sentinel)
self.assertNext(it, '1', is_last=False)
self.assertNext(it, '2', is_last=True)
def test_iter(self):
a = ['1', '2', '3']
it = peek_iter(a)
self.assertTrue(it is it.__iter__())
a = []
b = list(peek_iter(a))
self.assertEqual([], b)
a = ['1']
b = list(peek_iter(a))
self.assertEqual(['1'], b)
a = ['1', '2']
b = list(peek_iter(a))
self.assertEqual(['1', '2'], b)
a = ['1', '2', '3']
b = list(peek_iter(a))
self.assertEqual(['1', '2', '3'], b)
def test_next_with_multi(self):
a = []
it = peek_iter(a)
self.assertFalseTwice(it.has_next)
self.assertRaisesTwice(StopIteration, it.next, 2)
a = ['1']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertRaisesTwice(StopIteration, it.next, 2)
self.assertTrueTwice(it.has_next)
a = ['1', '2']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqual(['1', '2'], it.next(2))
self.assertFalseTwice(it.has_next)
a = ['1', '2', '3']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqual(['1', '2'], it.next(2))
self.assertTrueTwice(it.has_next)
self.assertRaisesTwice(StopIteration, it.next, 2)
self.assertTrueTwice(it.has_next)
a = ['1', '2', '3', '4']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqual(['1', '2'], it.next(2))
self.assertTrueTwice(it.has_next)
self.assertEqual(['3', '4'], it.next(2))
self.assertFalseTwice(it.has_next)
self.assertRaisesTwice(StopIteration, it.next, 2)
self.assertFalseTwice(it.has_next)
def test_next_with_none(self):
a = []
it = peek_iter(a)
self.assertFalseTwice(it.has_next)
self.assertRaisesTwice(StopIteration, it.next)
self.assertFalseTwice(it.has_next)
a = ['1']
it = peek_iter(a)
self.assertEqual('1', it.__next__())
a = ['1']
it = peek_iter(a)
self.assertNext(it, '1', is_last=True)
a = ['1', '2']
it = peek_iter(a)
self.assertNext(it, '1', is_last=False)
self.assertNext(it, '2', is_last=True)
a = ['1', '2', '3']
it = peek_iter(a)
self.assertNext(it, '1', is_last=False)
self.assertNext(it, '2', is_last=False)
self.assertNext(it, '3', is_last=True)
def test_next_with_one(self):
a = []
it = peek_iter(a)
self.assertFalseTwice(it.has_next)
self.assertRaisesTwice(StopIteration, it.next, 1)
a = ['1']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqual(['1'], it.next(1))
self.assertFalseTwice(it.has_next)
self.assertRaisesTwice(StopIteration, it.next, 1)
a = ['1', '2']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqual(['1'], it.next(1))
self.assertTrueTwice(it.has_next)
self.assertEqual(['2'], it.next(1))
self.assertFalseTwice(it.has_next)
self.assertRaisesTwice(StopIteration, it.next, 1)
def test_next_with_zero(self):
a = []
it = peek_iter(a)
self.assertFalseTwice(it.has_next)
self.assertRaisesTwice(StopIteration, it.next, 0)
a = ['1']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice([], it.next, 0)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice([], it.next, 0)
a = ['1', '2']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice([], it.next, 0)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice([], it.next, 0)
def test_peek_with_multi(self):
a = []
it = peek_iter(a)
self.assertFalseTwice(it.has_next)
self.assertEqualTwice([it.sentinel, it.sentinel], it.peek, 2)
self.assertFalseTwice(it.has_next)
a = ['1']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['1', it.sentinel], it.peek, 2)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['1', it.sentinel, it.sentinel], it.peek, 3)
self.assertTrueTwice(it.has_next)
a = ['1', '2']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['1', '2'], it.peek, 2)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['1', '2', it.sentinel], it.peek, 3)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['1', '2', it.sentinel, it.sentinel], it.peek, 4)
self.assertTrueTwice(it.has_next)
a = ['1', '2', '3']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['1', '2'], it.peek, 2)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['1', '2', '3'], it.peek, 3)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['1', '2', '3', it.sentinel], it.peek, 4)
self.assertTrueTwice(it.has_next)
self.assertEqual('1', next(it))
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['2', '3'], it.peek, 2)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['2', '3', it.sentinel], it.peek, 3)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['2', '3', it.sentinel, it.sentinel], it.peek, 4)
self.assertTrueTwice(it.has_next)
def test_peek_with_none(self):
a = []
it = peek_iter(a)
self.assertFalseTwice(it.has_next)
self.assertEqualTwice(it.sentinel, it.peek)
self.assertFalseTwice(it.has_next)
a = ['1']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice('1', it.peek)
self.assertEqual('1', next(it))
self.assertFalseTwice(it.has_next)
self.assertEqualTwice(it.sentinel, it.peek)
self.assertFalseTwice(it.has_next)
a = ['1', '2']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice('1', it.peek)
self.assertEqual('1', next(it))
self.assertTrueTwice(it.has_next)
self.assertEqualTwice('2', it.peek)
self.assertEqual('2', next(it))
self.assertFalseTwice(it.has_next)
self.assertEqualTwice(it.sentinel, it.peek)
self.assertFalseTwice(it.has_next)
def test_peek_with_one(self):
a = []
it = peek_iter(a)
self.assertFalseTwice(it.has_next)
self.assertEqualTwice([it.sentinel], it.peek, 1)
self.assertFalseTwice(it.has_next)
a = ['1']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['1'], it.peek, 1)
self.assertEqual('1', next(it))
self.assertFalseTwice(it.has_next)
self.assertEqualTwice([it.sentinel], it.peek, 1)
self.assertFalseTwice(it.has_next)
a = ['1', '2']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['1'], it.peek, 1)
self.assertEqual('1', next(it))
self.assertTrueTwice(it.has_next)
self.assertEqualTwice(['2'], it.peek, 1)
self.assertEqual('2', next(it))
self.assertFalseTwice(it.has_next)
self.assertEqualTwice([it.sentinel], it.peek, 1)
self.assertFalseTwice(it.has_next)
def test_peek_with_zero(self):
a = []
it = peek_iter(a)
self.assertFalseTwice(it.has_next)
self.assertEqualTwice([], it.peek, 0)
a = ['1']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice([], it.peek, 0)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice([], it.peek, 0)
a = ['1', '2']
it = peek_iter(a)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice([], it.peek, 0)
self.assertTrueTwice(it.has_next)
self.assertEqualTwice([], it.peek, 0)
class ModifyIterTest(BaseIteratorsTest):
def test_init_with_sentinel_args(self):
a = iter(['1', '2', '3', 'DONE'])
sentinel = 'DONE'
def get_next():
return next(a)
it = modify_iter(get_next, sentinel, int)
expected = [1, 2, 3]
self.assertEqual(expected, list(it))
def test_init_with_sentinel_kwargs(self):
a = iter([1, 2, 3, 4])
sentinel = 4
def get_next():
return next(a)
it = modify_iter(get_next, sentinel, modifier=str)
expected = ['1', '2', '3']
self.assertEqual(expected, list(it))
def test_modifier_default(self):
a = ['', ' ', ' a ', 'b ', ' c', ' ', '']
it = modify_iter(a)
expected = ['', ' ', ' a ', 'b ', ' c', ' ', '']
self.assertEqual(expected, list(it))
def test_modifier_not_callable(self):
self.assertRaises(TypeError, modify_iter, [1], modifier='not_callable')
def test_modifier_rstrip(self):
a = ['', ' ', ' a ', 'b ', ' c', ' ', '']
it = modify_iter(a, modifier=lambda s: s.rstrip())
expected = ['', '', ' a', 'b', ' c', '', '']
self.assertEqual(expected, list(it))
def test_modifier_rstrip_unicode(self):
a = ['', ' ', ' a ', 'b ', ' c', ' ', '']
it = modify_iter(a, modifier=lambda s: s.rstrip())
expected = ['', '', ' a', 'b', ' c', '', '']
self.assertEqual(expected, list(it))