import difflib from test import test_support import unittest import doctest 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) patch914575_from = ''' 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_to = ''' 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_full_expectation = '''

Full Side by Side Difference

full

from			to
1		f	1
2	1. Beautiful is beTTer than ugly.	n	2	1. Beautiful is better than ugly.
3	2. Explicit is better than implicit.
4	3. Simple is better than complex.		3	3. Simple is better than complex.
5	4. Complex is better than complicated.		4	4. Complicated is better than complex.
			5	5. Flat is better than nested.
6	123		6	123
7	123		7	123
8	123		8	123
9	123		9	123
10	123		10	123
11	123		11	123
12	123		12	123
13	123		13	123
14	123		14	123
15	123		15	123
16			16
17	1. Beautiful is beTTer than ugly.	n	17	1. Beautiful is better than ugly.
18	2. Explicit is better than implicit.
19	3. Simple is better than complex.		18	3. Simple is better than complex.
20	4. Complex is better than complicated.		19	4. Complicated is better than complex.
			20	5. Flat is better than nested.
21	123		21	123
22	123		22	123
23	123		23	123
24	123		24	123
25	123		25	123
26	123		26	123
27	123		27	123
28	123		28	123
29	123		29	123
30	123		30	123
31			31
32	1. Beautiful is beTTer than ugly.	t	32	1. Beautiful is better than ugly.
33	2. Explicit is better than implicit.
34	3. Simple is better than complex.		33	3. Simple is better than complex.
35	4. Complex is better than complicated.		34	4. Complicated is better than complex.
			35	5. Flat is better than nested.
36	123		36	123
37	123		37	123
38	123		38	123
39	123		39	123
40	123		40	123
41	123		41	123
42	123		42	123
43	123		43	123
44	123		44	123
45	123		45	123

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''' patch914575_context_expectation = ''' Context Side by Side Difference

context

from			to
1		f	1
2	1. Beautiful is beTTer than ugly.	n	2	1. Beautiful is better than ugly.
3	2. Explicit is better than implicit.
4	3. Simple is better than complex.		3	3. Simple is better than complex.
5	4. Complex is better than complicated.		4	4. Complicated is better than complex.
			5	5. Flat is better than nested.
6	123		6	123
7	123		7	123
8	123		8	123
9	123		9	123
14	123		14	123
15	123		15	123
16			16
17	1. Beautiful is beTTer than ugly.	n	17	1. Beautiful is better than ugly.
18	2. Explicit is better than implicit.
19	3. Simple is better than complex.		18	3. Simple is better than complex.
20	4. Complex is better than complicated.		19	4. Complicated is better than complex.
			20	5. Flat is better than nested.
21	123		21	123
22	123		22	123
23	123		23	123
24	123		24	123
29	123		29	123
30	123		30	123
31			31
32	1. Beautiful is beTTer than ugly.	t	32	1. Beautiful is better than ugly.
33	2. Explicit is better than implicit.
34	3. Simple is better than complex.		33	3. Simple is better than complex.
35	4. Complex is better than complicated.		34	4. Complicated is better than complex.
			35	5. Flat is better than nested.
36	123		36	123
37	123		37	123
38	123		38	123
39	123		39	123

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''' class TestSFpatches(unittest.TestCase): def test_html_diff(self): # Check SF patch 914575 for generating HTML differences a = patch914575_from + '123\n'*10 a = a * 3 a = a.splitlines(1) b = patch914575_to + '123\n'*10 b = b * 3 b = b.splitlines(1) i = difflib.HtmlDiff(prefix=['from1_','to1_']) full = i.make_file(a,b,'from','to',context=False, numlines=5,title='Full Side by Side Difference',header='

full

',summary='s_full') context = i.make_file(a,b,'from','to',context=True, numlines=3,title='Context Side by Side Difference',header='

context

',summary='s_context') # Save following two lines for baselining test #open('full.html','w').write(full) #open('context.html','w').write(context) self.assertEqual(patch914575_full_expectation,full) self.assertEqual(patch914575_context_expectation,context) Doctests = doctest.DocTestSuite(difflib) test_support.run_unittest(TestSFpatches, TestSFbugs, Doctests)