tests/test-cache-abuse.t
author Pulkit Goyal <7895pulkit@gmail.com>
Sun, 11 Feb 2018 17:30:42 +0530
changeset 36012 233fb0b91a35
parent 35709 1a09dad8b85a
child 42893 34a46d48d24e
permissions -rw-r--r--
py3: replace file() with open() in test-convert-mtn.t While I was here, I added b'' prefixes to make sure we write things correctly in bytes mode on Python 3. Differential Revision: https://phab.mercurial-scm.org/D2111
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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Enable obsolete markers
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  $ cat >> $HGRCPATH << EOF
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  > [experimental]
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  > evolution.createmarkers=True
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  > [phases]
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  > publish=False
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  > EOF
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Build a repo with some cacheable bits:
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  $ hg init a
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  $ cd a
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  $ echo a > a
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  $ hg ci -qAm0
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  $ hg tag t1
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  $ hg book -i bk1
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  $ hg branch -q b2
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  $ hg ci -Am1
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  $ hg tag t2
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  $ echo dumb > dumb
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  $ hg ci -qAmdumb
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  $ hg debugobsolete b1174d11b69e63cb0c5726621a43c859f0858d7f
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  obsoleted 1 changesets
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  $ hg phase -pr t1
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  $ hg phase -fsr t2
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Make a helper function to check cache damage invariants:
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- command output shouldn't change
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- cache should be present after first use
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- corruption/repair should be silent (no exceptions or warnings)
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- cache should survive deletion, overwrite, and append
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- unreadable / unwriteable caches should be ignored
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- cache should be rebuilt after corruption
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  $ damage() {
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  >  CMD=$1
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  >  CACHE=.hg/cache/$2
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  >  CLEAN=$3
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  >  hg $CMD > before
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  >  test -f $CACHE || echo "not present"
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  >  echo bad > $CACHE
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  >  test -z "$CLEAN" || $CLEAN
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  >  hg $CMD > after
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  >  "$RUNTESTDIR/pdiff" before after || echo "*** overwrite corruption"
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  >  echo corruption >> $CACHE
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  >  test -z "$CLEAN" || $CLEAN
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  >  hg $CMD > after
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  >  "$RUNTESTDIR/pdiff" before after || echo "*** append corruption"
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  >  rm $CACHE
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  >  mkdir $CACHE
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  >  test -z "$CLEAN" || $CLEAN
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  >  hg $CMD > after
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  >  "$RUNTESTDIR/pdiff" before after || echo "*** read-only corruption"
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  >  test -d $CACHE || echo "*** directory clobbered"
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  >  rmdir $CACHE
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  >  test -z "$CLEAN" || $CLEAN
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  >  hg $CMD > after
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  >  "$RUNTESTDIR/pdiff" before after || echo "*** missing corruption"
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  >  test -f $CACHE || echo "not rebuilt"
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  > }
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Beat up tags caches:
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  $ damage "tags --hidden" tags2
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  $ damage tags tags2-visible
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  $ damage "tag -f t3" hgtagsfnodes1
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  1 new orphan changesets
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  1 new orphan changesets
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  1 new orphan changesets
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  1 new orphan changesets
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  1 new orphan changesets
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Beat up branch caches:
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  $ damage branches branch2-base "rm .hg/cache/branch2-[vs]*"
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  $ damage branches branch2-served "rm .hg/cache/branch2-[bv]*"
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  $ damage branches branch2-visible
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  $ damage "log -r branch(.)" rbc-names-v1
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  $ damage "log -r branch(default)" rbc-names-v1
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  $ damage "log -r branch(b2)" rbc-revs-v1
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We currently can't detect an rbc cache with unknown names:
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  $ damage "log -qr branch(b2)" rbc-names-v1
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  --- before	* (glob)
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  +++ after	* (glob)
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  @@ -1,8 +?,0 @@ (glob)
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  -2:5fb7d38b9dc4
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  -3:60b597ffdafa
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  *** append corruption