tests/test-absorb-filefixupstate.py
author Raphaël Gomès <rgomes@octobus.net>
Thu, 28 Mar 2024 14:47:20 +0000
branchstable
changeset 51540 803e61387e86
parent 48946 642e31cb55f0
permissions -rw-r--r--
relnotes: add 6.7.2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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import itertools
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from mercurial import pycompat
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from hgext import absorb
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class simplefctx:
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    def __init__(self, content):
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        self.content = content
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    def data(self):
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        return self.content
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def insertreturns(x):
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    # insert "\n"s after each single char
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    if isinstance(x, bytes):
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        return b''.join(ch + b'\n' for ch in pycompat.bytestr(x))
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    else:
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        return pycompat.maplist(insertreturns, x)
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def removereturns(x):
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    # the revert of "insertreturns"
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    if isinstance(x, bytes):
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        return x.replace(b'\n', b'')
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    else:
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        return pycompat.maplist(removereturns, x)
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def assertlistequal(lhs, rhs, decorator=lambda x: x):
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    if lhs != rhs:
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        raise RuntimeError(
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            'mismatch:\n actual:   %r\n expected: %r'
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            % tuple(map(decorator, [lhs, rhs]))
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        )
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def testfilefixup(oldcontents, workingcopy, expectedcontents, fixups=None):
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    """([str], str, [str], [(rev, a1, a2, b1, b2)]?) -> None
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    workingcopy is a string, of which every character denotes a single line.
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    oldcontents, expectedcontents are lists of strings, every character of
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    every string denots a single line.
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    if fixups is not None, it's the expected fixups list and will be checked.
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    """
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    expectedcontents = insertreturns(expectedcontents)
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    oldcontents = insertreturns(oldcontents)
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    workingcopy = insertreturns(workingcopy)
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    state = absorb.filefixupstate(
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        pycompat.maplist(simplefctx, oldcontents), 'path'
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    )
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    state.diffwith(simplefctx(workingcopy))
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    if fixups is not None:
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        assertlistequal(state.fixups, fixups)
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    state.apply()
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    assertlistequal(state.finalcontents, expectedcontents, removereturns)
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def buildcontents(linesrevs):
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    # linesrevs: [(linecontent : str, revs : [int])]
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    revs = set(itertools.chain(*[revs for line, revs in linesrevs]))
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    return [b''] + [
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        b''.join([l for l, rs in linesrevs if r in rs]) for r in sorted(revs)
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    ]
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# input case 0: one single commit
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case0 = [b'', b'11']
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# replace a single chunk
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testfilefixup(case0, b'', [b'', b''])
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testfilefixup(case0, b'2', [b'', b'2'])
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testfilefixup(case0, b'22', [b'', b'22'])
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testfilefixup(case0, b'222', [b'', b'222'])
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# input case 1: 3 lines, each commit adds one line
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case1 = buildcontents(
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    [
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        (b'1', [1, 2, 3]),
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        (b'2', [2, 3]),
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        (b'3', [3]),
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    ]
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)
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# 1:1 line mapping
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testfilefixup(case1, b'123', case1)
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testfilefixup(case1, b'12c', [b'', b'1', b'12', b'12c'])
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testfilefixup(case1, b'1b3', [b'', b'1', b'1b', b'1b3'])
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testfilefixup(case1, b'1bc', [b'', b'1', b'1b', b'1bc'])
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testfilefixup(case1, b'a23', [b'', b'a', b'a2', b'a23'])
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testfilefixup(case1, b'a2c', [b'', b'a', b'a2', b'a2c'])
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testfilefixup(case1, b'ab3', [b'', b'a', b'ab', b'ab3'])
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testfilefixup(case1, b'abc', [b'', b'a', b'ab', b'abc'])
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# non 1:1 edits
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testfilefixup(case1, b'abcd', case1)
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testfilefixup(case1, b'ab', case1)
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# deletion
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testfilefixup(case1, b'', [b'', b'', b'', b''])
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testfilefixup(case1, b'1', [b'', b'1', b'1', b'1'])
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testfilefixup(case1, b'2', [b'', b'', b'2', b'2'])
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testfilefixup(case1, b'3', [b'', b'', b'', b'3'])
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testfilefixup(case1, b'13', [b'', b'1', b'1', b'13'])
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# replaces
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testfilefixup(case1, b'1bb3', [b'', b'1', b'1bb', b'1bb3'])
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# (confusing) replaces
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testfilefixup(case1, b'1bbb', case1)
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testfilefixup(case1, b'bbbb', case1)
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testfilefixup(case1, b'bbb3', case1)
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testfilefixup(case1, b'1b', case1)
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testfilefixup(case1, b'bb', case1)
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testfilefixup(case1, b'b3', case1)
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# insertions at the beginning and the end
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testfilefixup(case1, b'123c', [b'', b'1', b'12', b'123c'])
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testfilefixup(case1, b'a123', [b'', b'a1', b'a12', b'a123'])
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# (confusing) insertions
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testfilefixup(case1, b'1a23', case1)
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testfilefixup(case1, b'12b3', case1)
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# input case 2: delete in the middle
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case2 = buildcontents(
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    [
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        (b'11', [1, 2]),
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        (b'22', [1]),
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        (b'33', [1, 2]),
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    ]
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)
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# deletion (optimize code should make it 2 chunks)
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testfilefixup(
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    case2, b'', [b'', b'22', b''], fixups=[(4, 0, 2, 0, 0), (4, 2, 4, 0, 0)]
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)
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# 1:1 line mapping
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testfilefixup(case2, b'aaaa', [b'', b'aa22aa', b'aaaa'])
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# non 1:1 edits
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# note: unlike case0, the chunk is not "continuous" and no edit allowed
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testfilefixup(case2, b'aaa', case2)
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# input case 3: rev 3 reverts rev 2
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case3 = buildcontents(
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    [
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        (b'1', [1, 2, 3]),
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        (b'2', [2]),
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        (b'3', [1, 2, 3]),
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    ]
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)
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# 1:1 line mapping
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testfilefixup(case3, b'13', case3)
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testfilefixup(case3, b'1b', [b'', b'1b', b'12b', b'1b'])
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testfilefixup(case3, b'a3', [b'', b'a3', b'a23', b'a3'])
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testfilefixup(case3, b'ab', [b'', b'ab', b'a2b', b'ab'])
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# non 1:1 edits
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testfilefixup(case3, b'a', case3)
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testfilefixup(case3, b'abc', case3)
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# deletion
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testfilefixup(case3, b'', [b'', b'', b'2', b''])
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# insertion
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testfilefixup(case3, b'a13c', [b'', b'a13c', b'a123c', b'a13c'])
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# input case 4: a slightly complex case
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case4 = buildcontents(
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    [
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        (b'1', [1, 2, 3]),
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        (b'2', [2, 3]),
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        (
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            b'3',
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            [
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                1,
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                2,
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            ],
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        ),
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        (b'4', [1, 3]),
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        (b'5', [3]),
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        (b'6', [2, 3]),
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        (b'7', [2]),
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        (b'8', [2, 3]),
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        (b'9', [3]),
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    ]
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)
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testfilefixup(case4, b'1245689', case4)
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testfilefixup(case4, b'1a2456bbb', case4)
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testfilefixup(case4, b'1abc5689', case4)
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testfilefixup(case4, b'1ab5689', [b'', b'134', b'1a3678', b'1ab5689'])
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testfilefixup(case4, b'aa2bcd8ee', [b'', b'aa34', b'aa23d78', b'aa2bcd8ee'])
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testfilefixup(case4, b'aa2bcdd8ee', [b'', b'aa34', b'aa23678', b'aa24568ee'])
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testfilefixup(case4, b'aaaaaa', case4)
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testfilefixup(case4, b'aa258b', [b'', b'aa34', b'aa2378', b'aa258b'])
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testfilefixup(case4, b'25bb', [b'', b'34', b'23678', b'25689'])
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testfilefixup(case4, b'27', [b'', b'34', b'23678', b'245689'])
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testfilefixup(case4, b'28', [b'', b'34', b'2378', b'28'])
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testfilefixup(case4, b'', [b'', b'34', b'37', b''])
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# input case 5: replace a small chunk which is near a deleted line
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case5 = buildcontents(
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    [
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        (b'12', [1, 2]),
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        (b'3', [1]),
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        (b'4', [1, 2]),
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    ]
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)
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testfilefixup(case5, b'1cd4', [b'', b'1cd34', b'1cd4'])
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# input case 6: base "changeset" is immutable
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case6 = [b'1357', b'0125678']
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testfilefixup(case6, b'0125678', case6)
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testfilefixup(case6, b'0a25678', case6)
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testfilefixup(case6, b'0a256b8', case6)
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testfilefixup(case6, b'abcdefg', [b'1357', b'a1c5e7g'])
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testfilefixup(case6, b'abcdef', case6)
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testfilefixup(case6, b'', [b'1357', b'157'])
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testfilefixup(case6, b'0123456789', [b'1357', b'0123456789'])
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# input case 7: change an empty file
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case7 = [b'']
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testfilefixup(case7, b'1', case7)