Staging
v0.5.1
v0.5.1
https://github.com/python/cpython
Tip revision: 1da43e5e916949c8e849e656d9d05fa4b9d6836c authored by Benjamin Peterson on 26 June 2009, 13:21:52 UTC
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
Tip revision: 1da43e5
test_difflib.py
import difflib
from test.support import run_unittest, findfile
import unittest
import doctest
import sys
class TestSFbugs(unittest.TestCase):
def test_ratio_for_null_seqn(self):
# Check clearing of SF bug 763023
s = difflib.SequenceMatcher(None, [], [])
self.assertEqual(s.ratio(), 1)
self.assertEqual(s.quick_ratio(), 1)
self.assertEqual(s.real_quick_ratio(), 1)
def test_comparing_empty_lists(self):
# Check fix for bug #979794
group_gen = difflib.SequenceMatcher(None, [], []).get_grouped_opcodes()
self.assertRaises(StopIteration, next, group_gen)
diff_gen = difflib.unified_diff([], [])
self.assertRaises(StopIteration, next, diff_gen)
patch914575_from1 = """
1. Beautiful is beTTer than ugly.
2. Explicit is better than implicit.
3. Simple is better than complex.
4. Complex is better than complicated.
"""
patch914575_to1 = """
1. Beautiful is better than ugly.
3. Simple is better than complex.
4. Complicated is better than complex.
5. Flat is better than nested.
"""
patch914575_from2 = """
\t\tLine 1: preceeded by from:[tt] to:[ssss]
\t\tLine 2: preceeded by from:[sstt] to:[sssst]
\t \tLine 3: preceeded by from:[sstst] to:[ssssss]
Line 4: \thas from:[sst] to:[sss] after :
Line 5: has from:[t] to:[ss] at end\t
"""
patch914575_to2 = """
Line 1: preceeded by from:[tt] to:[ssss]
\tLine 2: preceeded by from:[sstt] to:[sssst]
Line 3: preceeded by from:[sstst] to:[ssssss]
Line 4: has from:[sst] to:[sss] after :
Line 5: has from:[t] to:[ss] at end
"""
patch914575_from3 = """line 0
1234567890123456789012345689012345
line 1
line 2
line 3
line 4 changed
line 5 changed
line 6 changed
line 7
line 8 subtracted
line 9
1234567890123456789012345689012345
short line
just fits in!!
just fits in two lines yup!!
the end"""
patch914575_to3 = """line 0
1234567890123456789012345689012345
line 1
line 2 added
line 3
line 4 chanGEd
line 5a chanGed
line 6a changEd
line 7
line 8
line 9
1234567890
another long line that needs to be wrapped
just fitS in!!
just fits in two lineS yup!!
the end"""
class TestSFpatches(unittest.TestCase):
def test_html_diff(self):
# Check SF patch 914575 for generating HTML differences
f1a = ((patch914575_from1 + '123\n'*10)*3)
t1a = (patch914575_to1 + '123\n'*10)*3
f1b = '456\n'*10 + f1a
t1b = '456\n'*10 + t1a
f1a = f1a.splitlines()
t1a = t1a.splitlines()
f1b = f1b.splitlines()
t1b = t1b.splitlines()
f2 = patch914575_from2.splitlines()
t2 = patch914575_to2.splitlines()
f3 = patch914575_from3
t3 = patch914575_to3
i = difflib.HtmlDiff()
j = difflib.HtmlDiff(tabsize=2)
k = difflib.HtmlDiff(wrapcolumn=14)
full = i.make_file(f1a,t1a,'from','to',context=False,numlines=5)
tables = '\n'.join(
[
'<h2>Context (first diff within numlines=5(default))</h2>',
i.make_table(f1a,t1a,'from','to',context=True),
'<h2>Context (first diff after numlines=5(default))</h2>',
i.make_table(f1b,t1b,'from','to',context=True),
'<h2>Context (numlines=6)</h2>',
i.make_table(f1a,t1a,'from','to',context=True,numlines=6),
'<h2>Context (numlines=0)</h2>',
i.make_table(f1a,t1a,'from','to',context=True,numlines=0),
'<h2>Same Context</h2>',
i.make_table(f1a,f1a,'from','to',context=True),
'<h2>Same Full</h2>',
i.make_table(f1a,f1a,'from','to',context=False),
'<h2>Empty Context</h2>',
i.make_table([],[],'from','to',context=True),
'<h2>Empty Full</h2>',
i.make_table([],[],'from','to',context=False),
'<h2>tabsize=2</h2>',
j.make_table(f2,t2),
'<h2>tabsize=default</h2>',
i.make_table(f2,t2),
'<h2>Context (wrapcolumn=14,numlines=0)</h2>',
k.make_table(f3.splitlines(),t3.splitlines(),context=True,numlines=0),
'<h2>wrapcolumn=14,splitlines()</h2>',
k.make_table(f3.splitlines(),t3.splitlines()),
'<h2>wrapcolumn=14,splitlines(True)</h2>',
k.make_table(f3.splitlines(True),t3.splitlines(True)),
])
actual = full.replace('</body>','\n%s\n</body>' % tables)
# temporarily uncomment next two lines to baseline this test
#with open('test_difflib_expect.html','w') as fp:
# fp.write(actual)
with open(findfile('test_difflib_expect.html')) as fp:
self.assertEqual(actual, fp.read())
def test_recursion_limit(self):
# Check if the problem described in patch #1413711 exists.
limit = sys.getrecursionlimit()
old = [(i%2 and "K:%d" or "V:A:%d") % i for i in range(limit*2)]
new = [(i%2 and "K:%d" or "V:B:%d") % i for i in range(limit*2)]
difflib.SequenceMatcher(None, old, new).get_opcodes()
def test_main():
difflib.HtmlDiff._default_prefix = 0
Doctests = doctest.DocTestSuite(difflib)
run_unittest(TestSFpatches, TestSFbugs, Doctests)
if __name__ == '__main__':
test_main()