1 Test how largefiles abort in case the disk runs full

     2 

     3   $ cat > criple.py <<EOF

     4   > import os, errno, shutil

     5   > from mercurial import util

     6   > #

     7   > # this makes the original largefiles code abort:

     8   > def copyfileobj(fsrc, fdst, length=16*1024):

     9   >     fdst.write(fsrc.read(4))

    10   >     raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC))

    11   > shutil.copyfileobj = copyfileobj

    12   > #

    13   > # this makes the rewritten code abort:

    14   > def filechunkiter(f, size=65536, limit=None):

    15   >     yield f.read(4)

    16   >     raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC))

    17   > util.filechunkiter = filechunkiter

    18   > EOF

    19 

    20   $ echo "[extensions]" >> $HGRCPATH

    21   $ echo "largefiles =" >> $HGRCPATH

    22 

    23   $ hg init alice

    24   $ cd alice

    25   $ echo "this is a very big file" > big

    26   $ hg add --large big

    27   $ hg commit --config extensions.criple=$TESTTMP/criple.py -m big

    28   abort: No space left on device

    29   [255]

    30 

    31 The largefile is not created in .hg/largefiles:

    32 

    33   $ ls .hg/largefiles

    34   dirstate

    35 

    36 The user cache is not even created:

    37 

    38   >>> import os; os.path.exists("$HOME/.cache/largefiles/")

    39   False