author | Gregory Szorc <gregory.szorc@gmail.com> |
Sun, 04 May 2014 21:46:49 -0700 | |
changeset 21248 | 48e859e30cbf |
parent 16913 | f2719b387380 |
child 25810 | 82d6a35cf432 |
permissions | -rw-r--r-- |
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revlog.parseindex must be able to parse the index file even if |
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an index entry is split between two 64k blocks. The ideal test |
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would be to create an index file with inline data where |
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64k < size < 64k + 64 (64k is the size of the read buffer, 64 is |
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the size of an index entry) and with an index entry starting right |
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before the 64k block boundary, and try to read it. |
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We approximate that by reducing the read buffer to 1 byte. |
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$ hg init a |
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$ cd a |
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$ echo abc > foo |
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$ hg add foo |
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$ hg commit -m 'add foo' |
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$ echo >> foo |
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$ hg commit -m 'change foo' |
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$ hg log -r 0: |
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changeset: 0:7c31755bf9b5 |
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user: test |
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date: Thu Jan 01 00:00:00 1970 +0000 |
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summary: add foo |
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|
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changeset: 1:26333235a41c |
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tag: tip |
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user: test |
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date: Thu Jan 01 00:00:00 1970 +0000 |
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summary: change foo |
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|
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$ cat >> test.py << EOF |
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> from mercurial import changelog, scmutil |
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> from mercurial.node import * |
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> |
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> class singlebyteread(object): |
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> def __init__(self, real): |
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> self.real = real |
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> |
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> def read(self, size=-1): |
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> if size == 65536: |
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> size = 1 |
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> return self.real.read(size) |
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> |
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> def __getattr__(self, key): |
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> return getattr(self.real, key) |
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> |
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> def opener(*args): |
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> o = scmutil.opener(*args) |
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> def wrapper(*a): |
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> f = o(*a) |
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> return singlebyteread(f) |
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> return wrapper |
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> |
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> cl = changelog.changelog(opener('.hg/store')) |
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> print len(cl), 'revisions:' |
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> for r in cl: |
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> print short(cl.node(r)) |
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> EOF |
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$ python test.py |
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2 revisions: |
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$ cd .. |