|
|
from __future__ import absolute_import, print_function
|
|
|
import struct
|
|
|
from mercurial import (
|
|
|
bdiff,
|
|
|
mpatch,
|
|
|
)
|
|
|
|
|
|
def test1(a, b):
|
|
|
d = bdiff.bdiff(a, b)
|
|
|
c = a
|
|
|
if d:
|
|
|
c = mpatch.patches(a, [d])
|
|
|
if c != b:
|
|
|
print("bad diff+patch result from\n %r to\n %r:" % (a, b))
|
|
|
print("bdiff: %r" % d)
|
|
|
print("patched: %r" % c[:200])
|
|
|
|
|
|
def test(a, b):
|
|
|
print("test", repr(a), repr(b))
|
|
|
test1(a, b)
|
|
|
test1(b, a)
|
|
|
|
|
|
test("a\nc\n\n\n\n", "a\nb\n\n\n")
|
|
|
test("a\nb\nc\n", "a\nc\n")
|
|
|
test("", "")
|
|
|
test("a\nb\nc", "a\nb\nc")
|
|
|
test("a\nb\nc\nd\n", "a\nd\n")
|
|
|
test("a\nb\nc\nd\n", "a\nc\ne\n")
|
|
|
test("a\nb\nc\n", "a\nc\n")
|
|
|
test("a\n", "c\na\nb\n")
|
|
|
test("a\n", "")
|
|
|
test("a\n", "b\nc\n")
|
|
|
test("a\n", "c\na\n")
|
|
|
test("", "adjfkjdjksdhfksj")
|
|
|
test("", "ab")
|
|
|
test("", "abc")
|
|
|
test("a", "a")
|
|
|
test("ab", "ab")
|
|
|
test("abc", "abc")
|
|
|
test("a\n", "a\n")
|
|
|
test("a\nb", "a\nb")
|
|
|
|
|
|
#issue1295
|
|
|
def showdiff(a, b):
|
|
|
print('showdiff(\n %r,\n %r):' % (a, b))
|
|
|
bin = bdiff.bdiff(a, b)
|
|
|
pos = 0
|
|
|
q = 0
|
|
|
while pos < len(bin):
|
|
|
p1, p2, l = struct.unpack(">lll", bin[pos:pos + 12])
|
|
|
pos += 12
|
|
|
if p1:
|
|
|
print('', repr(a[q:p1]))
|
|
|
print('', p1, p2, repr(a[p1:p2]), '->', repr(bin[pos:pos + l]))
|
|
|
pos += l
|
|
|
q = p2
|
|
|
if q < len(a):
|
|
|
print('', repr(a[q:]))
|
|
|
|
|
|
showdiff("x\n\nx\n\nx\n\nx\n\nz\n", "x\n\nx\n\ny\n\nx\n\nx\n\nz\n")
|
|
|
showdiff("x\n\nx\n\nx\n\nx\n\nz\n", "x\n\nx\n\ny\n\nx\n\ny\n\nx\n\nz\n")
|
|
|
# we should pick up abbbc. rather than bc.de as the longest match
|
|
|
showdiff("a\nb\nb\nb\nc\n.\nd\ne\n.\nf\n",
|
|
|
"a\nb\nb\na\nb\nb\nb\nc\n.\nb\nc\n.\nd\ne\nf\n")
|
|
|
|
|
|
print("done")
|
|
|
|
|
|
def testfixws(a, b, allws):
|
|
|
c = bdiff.fixws(a, allws)
|
|
|
if c != b:
|
|
|
print("*** fixws", repr(a), repr(b), allws)
|
|
|
print("got:")
|
|
|
print(repr(c))
|
|
|
|
|
|
testfixws(" \ta\r b\t\n", "ab\n", 1)
|
|
|
testfixws(" \ta\r b\t\n", " a b\n", 0)
|
|
|
testfixws("", "", 1)
|
|
|
testfixws("", "", 0)
|
|
|
|
|
|
print("done")
|
|
|
|
|
|
print("Odd diff for a trivial change:")
|
|
|
showdiff(
|
|
|
''.join('<%s\n-\n' % i for i in range(5)),
|
|
|
''.join('>%s\n-\n' % i for i in range(5)))
|
|
|
|
|
|
print("Diff 1 to 3 lines - preference for adding / removing at the end of sequences:")
|
|
|
showdiff('a\n', 'a\n' * 3)
|
|
|
print("Diff 1 to 5 lines - preference for adding / removing at the end of sequences:")
|
|
|
showdiff('a\n', 'a\n' * 5)
|
|
|
print("Diff 3 to 1 lines - preference for adding / removing at the end of sequences:")
|
|
|
showdiff('a\n' * 3, 'a\n')
|
|
|
print("Diff 5 to 1 lines - this diff seems weird:")
|
|
|
showdiff('a\n' * 5, 'a\n')
|
|
|
|