home *** CD-ROM | disk | FTP | other *** search
- import difflib
- from test.test_support import run_unittest, findfile
- 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_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)
-
- Doctests = doctest.DocTestSuite(difflib)
-
- run_unittest(TestSFpatches, TestSFbugs, Doctests)
-