Staging
v0.5.1
v0.5.1
https://github.com/python/cpython
Tip revision: 74f4bd53e03ded8408bcc2de67cf0f5a4ac5b1a1 authored by Barry Warsaw on 23 February 2012, 15:59:38 UTC
Bump some more copyright years (as per PEP 101), since this is the first
Bump some more copyright years (as per PEP 101), since this is the first
Tip revision: 74f4bd5
test_difflib.py
import difflib
from test.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, group_gen.next)
diff_gen = difflib.unified_diff([], [])
self.assertRaises(StopIteration, diff_gen.next)
def test_added_tab_hint(self):
# Check fix for bug #1488943
diff = list(difflib.Differ().compare(["\tI am a buggy"],["\t\tI am a bug"]))
self.assertEqual("- \tI am a buggy", diff[0])
self.assertEqual("? --\n", diff[1])
self.assertEqual("+ \t\tI am a bug", diff[2])
self.assertEqual("? +\n", diff[3])
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 three lines to baseline this test
#f = open('test_difflib_expect.html','w')
#f.write(actual)
#f.close()
expect = open(findfile('test_difflib_expect.html')).read()
self.assertEqual(actual,expect)
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()