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- import cStringIO as StringIO
- from util import Diff
- class TestDiff:
- def testDiff(self):
- assert Diff.diff(
- [],
- ["one", "two", "three"]
- ) == [("+", ["one", "two","three"])]
- assert Diff.diff(
- ["one", "two", "three"],
- ["one", "two", "three", "four", "five"]
- ) == [("=", 11), ("+", ["four", "five"])]
- assert Diff.diff(
- ["one", "two", "three", "six"],
- ["one", "two", "three", "four", "five", "six"]
- ) == [("=", 11), ("+", ["four", "five"]), ("=", 3)]
- assert Diff.diff(
- ["one", "two", "three", "hmm", "six"],
- ["one", "two", "three", "four", "five", "six"]
- ) == [("=", 11), ("-", 3), ("+", ["four", "five"]), ("=", 3)]
- assert Diff.diff(
- ["one", "two", "three"],
- []
- ) == [("-", 11)]
- def testDiffLimit(self):
- old_f = StringIO.StringIO("one\ntwo\nthree\nhmm\nsix")
- new_f = StringIO.StringIO("one\ntwo\nthree\nfour\nfive\nsix")
- actions = Diff.diff(list(old_f), list(new_f), limit=1024)
- assert actions
- old_f = StringIO.StringIO("one\ntwo\nthree\nhmm\nsix")
- new_f = StringIO.StringIO("one\ntwo\nthree\nfour\nfive\nsix"*1024)
- actions = Diff.diff(list(old_f), list(new_f), limit=1024)
- assert actions is False
- def testPatch(self):
- old_f = StringIO.StringIO("one\ntwo\nthree\nhmm\nsix")
- new_f = StringIO.StringIO("one\ntwo\nthree\nfour\nfive\nsix")
- actions = Diff.diff(
- list(old_f),
- list(new_f)
- )
- old_f.seek(0)
- assert Diff.patch(old_f, actions).getvalue() == new_f.getvalue()
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