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#! /usr/bin/env python3
# $Id: test_viewlist.py 9839 2024-08-01 21:25:56Z aa-turner $
# Author: David Goodger <goodger@python.org>
# Copyright: This module has been placed in the public domain.
"""
Test module for the ViewList class from statemachine.py.
"""
from pathlib import Path
import sys
import unittest
if __name__ == '__main__':
# prepend the "docutils root" to the Python library path
# so we import the local `docutils` package.
sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
from docutils import statemachine
class ViewListTests(unittest.TestCase):
a_list = list('abcdefg')
b_list = list('AEIOU')
c_list = list('XYZ')
def setUp(self):
self.a = statemachine.ViewList(self.a_list, 'a')
self.b = statemachine.ViewList(self.b_list, 'b')
self.c = statemachine.ViewList(self.c_list, 'c')
def test_xitems(self):
self.assertEqual(list(self.b.xitems()),
[('b', 0, 'A'), ('b', 1, 'E'),
('b', 2, 'I'), ('b', 3, 'O'), ('b', 4, 'U')])
self.assertEqual(list(self.c.xitems()),
[('c', 0, 'X'), ('c', 1, 'Y'), ('c', 2, 'Z')])
def test_lists(self):
# be compatible to standard lists whenever sensible:
self.assertEqual(self.a, self.a_list)
self.assertEqual(str(self.a), str(self.a_list))
self.assertEqual(self.b, self.b_list)
self.assertEqual(self.c, self.c_list)
self.assertEqual(len(self.a), len(self.a_list))
self.assertTrue('d' in self.a) # __contains__
self.assertEqual(list(self.a), self.a_list)
# get and set values
self.assertEqual(self.a[2], self.a_list[2])
a = self.a[:]
self.assertEqual(a, self.a)
a[1] = 3
self.assertEqual(a[1], 3)
# the `items` list contains the metadata (source/offset tuples)
self.assertEqual(self.a.items,
[('a', i) for (i, v) in enumerate(self.a_list)])
def test_special_class_methods(self):
# `repr` returns instantiation expression
self.assertEqual(repr(self.a), "ViewList(%s, items=%s)" %
(repr(self.a_list), repr(self.a.items)))
# `del` also deletes meta-data:
del self.c[1]
self.assertEqual(list(self.c.xitems()),
[('c', 0, 'X'), ('c', 2, 'Z')])
# operators with extended behaviour
ab = self.a + self.b
self.assertEqual(ab, self.a_list + self.b_list)
self.assertEqual(ab.items, self.a.items + self.b.items)
aa = self.a * 2
self.assertEqual(aa, self.a_list * 2)
self.assertEqual(aa.items, self.a.items * 2)
self.a += self.b
self.assertEqual(self.a, self.a_list + self.b_list)
# self.assertEqual(self.a.items, self.a.items + self.b.items)
def test_get_slice(self):
a = self.a[1:-1]
a_list = self.a_list[1:-1]
self.assertEqual(a, a_list)
self.assertEqual(a.items, [('a', i+1) for (i, v) in enumerate(a_list)])
self.assertEqual(a.parent, self.a)
def test_set_slice(self):
a = statemachine.ViewList(self.a[:])
s = a[2:-2]
s[2:2] = self.b
s_list = self.a_list[2:-2]
s_list[2:2] = self.b_list
self.assertEqual(s, s_list)
self.assertEqual(s, a[2:-2])
self.assertEqual(s.items, a[2:-2].items)
def test_del_slice(self):
a = statemachine.ViewList(self.a[:])
s = a[2:]
s_list = self.a_list[2:]
del s[3:5]
del s_list[3:5]
self.assertEqual(s, s_list)
self.assertEqual(s, a[2:])
self.assertEqual(s.items, a[2:].items)
def test_insert(self):
a_list = self.a_list[:]
a_list.insert(2, 'Q')
a_list[4:4] = self.b_list
a = self.a[:]
self.assertTrue(isinstance(a, statemachine.ViewList))
a.insert(2, 'Q', 'runtime')
a.insert(4, self.b)
self.assertEqual(a, a_list)
self.assertEqual(a.info(2), ('runtime', 0))
self.assertEqual(a.info(5), ('b', 1))
def test_append(self):
a_list = self.a_list[:]
a_list.append('Q')
a_list.extend(self.b_list)
a = statemachine.ViewList(self.a)
a.append('Q', 'runtime')
a.append(self.b)
self.assertEqual(a, a_list)
self.assertEqual(a.info(len(self.a)), ('runtime', 0))
self.assertEqual(a.info(-2), ('b', len(self.b) - 2))
def test_extend(self):
a_list = self.a_list[:]
a_list.extend(self.b_list)
a = statemachine.ViewList(self.a)
a.extend(self.b)
self.assertEqual(a, a_list)
self.assertEqual(a.info(len(self.a) + 1), ('b', 1))
def test_view(self):
a = statemachine.ViewList(self.a[:])
a.insert(4, self.b)
s = a[2:-2]
s.insert(5, self.c)
self.assertEqual(s, a[2:-2])
self.assertEqual(s.items, a[2:-2].items)
s.pop()
self.assertEqual(s, a[2:-2])
self.assertEqual(s.items, a[2:-2].items)
s.remove('X')
self.assertEqual(s, a[2:-2])
self.assertEqual(s.items, a[2:-2].items)
def test_trim(self):
a = statemachine.ViewList(self.a[:])
s = a[1:-1]
s.trim_start(1)
self.assertEqual(a, self.a)
self.assertEqual(s, a[2:-1])
s.trim_end(1)
self.assertEqual(a, self.a)
self.assertEqual(s, a[2:-2])
def test_info(self):
ab = self.a + self.b
self.assertEqual(ab.info(0), ('a', 0))
self.assertEqual(ab.info(-1), ('b', len(self.b)-1))
# report source if index is off the list by one
self.assertEqual(ab.info(len(ab)), ('b', None))
# `source` and `offset` methods are based on info
self.assertEqual(ab.source(-1), 'b')
self.assertEqual(ab.offset(-1), len(self.b)-1)
def test_reverse(self):
c = self.c[:]
c.reverse()
self.assertEqual(list(c.xitems()),
[('c', 2, 'Z'), ('c', 1, 'Y'), ('c', 0, 'X')])
def test_sort(self):
c = self.c[:]
c.reverse()
c.sort()
self.assertEqual(self.c, c)
class StringList(unittest.TestCase):
text = """\
This is some
example text.
Here is some
indented text.
Unindented text.
"""
indented_string = """\
a
literal
block"""
def setUp(self):
self.a_list = self.text.splitlines(True)
self.a = statemachine.StringList(self.a_list, 'a')
def test_trim_left(self):
s = self.a[3:5]
s.trim_left(4)
self.assertEqual(s, [line.lstrip() for line in self.a_list[3:5]])
def test_get_indented(self):
self.assertEqual(self.a.get_indented(),
([], 0, 0))
block = statemachine.StringList(
statemachine.string2lines(self.indented_string))
self.assertEqual(block.get_indented(),
([s[6:] for s in block], 6, 1))
if __name__ == '__main__':
unittest.main()
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