Mercurial > hg
view tests/test-largefiles-small-disk.t @ 32013:0cf4d6763735
obsolescence: add test for the "branch replacement" logic during push, case B6
Mercurial checks for the introduction of new heads on push. Evolution comes
into play to detect if existing branches on the server are being replaced by
some of the new one we push.
This changeset adds test for the improved "branch replacement" logic introduce
in an earlier commits. This tests initially lived in the evolve extensions.
Since we now have the code handling this logic in core, it make sense to have
the tests in core too.
See inline documentation for details about the test case added in this
changeset.
author | Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
---|---|
date | Sat, 15 Apr 2017 02:53:42 +0200 |
parents | 1ef37b16b8e8 |
children | 991134261057 |
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Test how largefiles abort in case the disk runs full $ cat > criple.py <<EOF > import os, errno, shutil > from mercurial import util > # > # this makes the original largefiles code abort: > _origcopyfileobj = shutil.copyfileobj > def copyfileobj(fsrc, fdst, length=16*1024): > # allow journal files (used by transaction) to be written > if 'journal.' in fdst.name: > return _origcopyfileobj(fsrc, fdst, length) > fdst.write(fsrc.read(4)) > raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC)) > shutil.copyfileobj = copyfileobj > # > # this makes the rewritten code abort: > def filechunkiter(f, size=131072, limit=None): > yield f.read(4) > raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC)) > util.filechunkiter = filechunkiter > # > def oslink(src, dest): > raise OSError("no hardlinks, try copying instead") > util.oslink = oslink > EOF $ echo "[extensions]" >> $HGRCPATH $ echo "largefiles =" >> $HGRCPATH $ hg init alice $ cd alice $ echo "this is a very big file" > big $ hg add --large big $ hg commit --config extensions.criple=$TESTTMP/criple.py -m big abort: No space left on device [255] The largefile is not created in .hg/largefiles: $ ls .hg/largefiles dirstate The user cache is not even created: >>> import os; os.path.exists("$HOME/.cache/largefiles/") False Make the commit with space on the device: $ hg commit -m big Now make a clone with a full disk, and make sure lfutil.link function makes copies instead of hardlinks: $ cd .. $ hg --config extensions.criple=$TESTTMP/criple.py clone --pull alice bob requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files updating to branch default getting changed largefiles abort: No space left on device [255] The largefile is not created in .hg/largefiles: $ ls bob/.hg/largefiles dirstate