1 files changed, 61 insertions, 0 deletions
diff --git a/tests/test-parseindex.t b/tests/test-parseindex.t
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+++ b/tests/test-parseindex.t
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+revlog.parseindex must be able to parse the index file even if
+an index entry is split between two 64k blocks.  The ideal test
+would be to create an index file with inline data where
+64k < size < 64k + 64 (64k is the size of the read buffer, 64 is
+the size of an index entry) and with an index entry starting right
+before the 64k block boundary, and try to read it.
+We approximate that by reducing the read buffer to 1 byte.
+
+  $ hg init a
+  $ cd a
+  $ echo abc > foo
+  $ hg add foo
+  $ hg commit -m 'add foo'
+  $ echo >> foo
+  $ hg commit -m 'change foo'
+  $ hg log -r 0:
+  changeset:   0:7c31755bf9b5
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     add foo
+  
+  changeset:   1:26333235a41c
+  tag:         tip
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     change foo
+  
+  $ cat >> test.py << EOF
+  > from mercurial import changelog, scmutil
+  > from mercurial.node import *
+  > 
+  > class singlebyteread(object):
+  >     def __init__(self, real):
+  >         self.real = real
+  > 
+  >     def read(self, size=-1):
+  >         if size == 65536:
+  >             size = 1
+  >         return self.real.read(size)
+  > 
+  >     def __getattr__(self, key):
+  >         return getattr(self.real, key)
+  > 
+  > def opener(*args):
+  >     o = scmutil.opener(*args)
+  >     def wrapper(*a):
+  >         f = o(*a)
+  >         return singlebyteread(f)
+  >     return wrapper
+  > 
+  > cl = changelog.changelog(opener('.hg/store'))
+  > print len(cl), 'revisions:'
+  > for r in cl:
+  >     print short(cl.node(r))
+  > EOF
+  $ python test.py
+  2 revisions:
+  7c31755bf9b5
+  26333235a41c
+
+  $ cd ..