Mercurial > hg
annotate tests/test-largefiles-small-disk.t @ 35816:f6ca1e11d8b4 stable
revset: evaluate filesets against each revision for 'file()' (issue5778)
After f2aeff8a87b6, the fileset was evaluated to a set of files against the
working directory, and then those files were applied against each revision. The
result was nonsense. For example, `hg log -r 'file("set:exec()")'` on the
Mercurial repo listed revision 0 because it has the `hg` script, which is
currently +x. But that bit wasn't applied until revision 280 (which
'contains()' properly indicates).
This technique was borrowed from checkstatus(), which services adds(),
modifies(), and removes(), so it seems safe enough. The 'r:' case is explicitly
assigned to wdirrev, freeing up rev=None to mean "re-evaluate at each revision".
The distinction is important to avoid behavior changes with `hg log set:...`
(test-largefiles-misc.t and test-fileset-generated.t drop current log output
without this). I'm not sure what the right behavior for that is (1fd352aa08fc
explicitly enabled this behavior for graphlog), but the day before the release
isn't the time to experiment.
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Sun, 28 Jan 2018 14:08:59 -0500 |
parents | eb586ed5d8ce |
children | a42817fede27 |
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1 Test how largefiles abort in case the disk runs full |
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2 |
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3 $ cat > criple.py <<EOF |
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4 > from __future__ import absolute_import |
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5 > import errno |
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6 > import os |
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7 > import shutil |
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8 > from mercurial import util |
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9 > # |
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10 > # this makes the original largefiles code abort: |
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11 > _origcopyfileobj = shutil.copyfileobj |
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12 > def copyfileobj(fsrc, fdst, length=16*1024): |
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13 > # allow journal files (used by transaction) to be written |
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14 > if 'journal.' in fdst.name: |
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15 > return _origcopyfileobj(fsrc, fdst, length) |
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16 > fdst.write(fsrc.read(4)) |
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17 > raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC)) |
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18 > shutil.copyfileobj = copyfileobj |
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19 > # |
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20 > # this makes the rewritten code abort: |
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21 > def filechunkiter(f, size=131072, limit=None): |
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22 > yield f.read(4) |
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23 > raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC)) |
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24 > util.filechunkiter = filechunkiter |
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25 > # |
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26 > def oslink(src, dest): |
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27 > raise OSError("no hardlinks, try copying instead") |
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28 > util.oslink = oslink |
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29 > EOF |
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30 |
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31 $ echo "[extensions]" >> $HGRCPATH |
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32 $ echo "largefiles =" >> $HGRCPATH |
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33 |
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34 $ hg init alice |
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35 $ cd alice |
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36 $ echo "this is a very big file" > big |
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37 $ hg add --large big |
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38 $ hg commit --config extensions.criple=$TESTTMP/criple.py -m big |
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39 abort: No space left on device |
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40 [255] |
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41 |
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42 The largefile is not created in .hg/largefiles: |
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43 |
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44 $ ls .hg/largefiles |
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45 dirstate |
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46 |
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47 The user cache is not even created: |
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48 |
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49 >>> import os; os.path.exists("$HOME/.cache/largefiles/") |
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50 False |
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51 |
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52 Make the commit with space on the device: |
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53 |
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54 $ hg commit -m big |
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55 |
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56 Now make a clone with a full disk, and make sure lfutil.link function |
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57 makes copies instead of hardlinks: |
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58 |
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59 $ cd .. |
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60 $ hg --config extensions.criple=$TESTTMP/criple.py clone --pull alice bob |
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61 requesting all changes |
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62 adding changesets |
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63 adding manifests |
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64 adding file changes |
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65 added 1 changesets with 1 changes to 1 files |
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66 new changesets 390cf214e9ac |
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67 updating to branch default |
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68 getting changed largefiles |
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69 abort: No space left on device |
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70 [255] |
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71 |
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72 The largefile is not created in .hg/largefiles: |
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73 |
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74 $ ls bob/.hg/largefiles |
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75 dirstate |