Mercurial > hg
view tests/test-racy-mutations.t @ 50620:26e63204c31e
safehasattr: pass attribute name as string instead of bytes
This is a step toward replacing `util.safehasattr` usage with plain `hasattr`.
The builtin function behave poorly in Python2 but this was fixed in Python3.
These change are done one by one as they tend to have a small odd to trigger
puzzling breackage.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Thu, 02 Feb 2023 17:37:51 +0100 |
parents | 28dfb2df4ab9 |
children | dcaa2df1f688 |
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#testcases skip-detection fail-if-detected Test situations that "should" only be reproducible: - on networked filesystems, or - user using `hg debuglocks` to eliminate the lock file, or - something (that doesn't respect the lock file) writing to the .hg directory while we're running Initial setup ------------- $ hg init base-repo $ cd base-repo $ cat > "$TESTTMP_FORWARD_SLASH/waitlock_editor.sh" <<EOF > [ -n "\${WAITLOCK_ANNOUNCE:-}" ] && touch "\${WAITLOCK_ANNOUNCE}" > f="\${WAITLOCK_FILE}" > start=\`date +%s\` > timeout=5 > "$RUNTESTDIR_FORWARD_SLASH/testlib/wait-on-file" "\$timeout" "\$f" > if [ \$# -gt 1 ]; then > cat "\$@" > fi > EOF Things behave differently if we don't already have a 00changelog.i file when this all starts, so let's make one. $ echo r0 > r0 $ hg commit -qAm 'r0' $ cd .. $ cp -R base-repo main-client $ cp -R base-repo racing-client $ mkdir sync $ EDITOR_STARTED="$TESTTMP_FORWARD_SLASH/sync/.editor_started" $ MISCHIEF_MANAGED="$TESTTMP_FORWARD_SLASH/sync/.mischief_managed" $ JOBS_FINISHED="$TESTTMP_FORWARD_SLASH/sync/.jobs_finished" Actual test ----------- Start an hg commit that will take a while $ cd main-client #if fail-if-detected $ cat >> $HGRCPATH << EOF > [debug] > revlog.verifyposition.changelog = fail > EOF #endif $ echo foo > foo $ ( > unset HGEDITOR; > WAITLOCK_ANNOUNCE="${EDITOR_STARTED}" \ > WAITLOCK_FILE="${MISCHIEF_MANAGED}" \ > hg commit -qAm 'r1 (foo)' --edit foo \ > --config ui.editor="sh $TESTTMP_FORWARD_SLASH/waitlock_editor.sh" \ > > .foo_commit_out 2>&1 ;\ > touch "${JOBS_FINISHED}" > ) & Wait for the "editor" to actually start $ sh "$RUNTESTDIR_FORWARD_SLASH/testlib/wait-on-file" 5 "${EDITOR_STARTED}" Do a concurrent edition $ cd ../racing-client $ touch ../pre-race $ sleep 1 $ echo bar > bar $ hg --repository ../racing-client commit -qAm 'r2 (bar)' bar $ hg --repository ../racing-client debugrevlogindex -c rev linkrev nodeid p1 p2 0 0 222799e2f90b 000000000000 000000000000 1 1 6f124f6007a0 222799e2f90b 000000000000 We simulate an network FS race by overwriting raced repo content with the new content of the files changed in the racing repository $ for x in `find . -type f -newer ../pre-race`; do > cp $x ../main-client/$x > done $ cd ../main-client Awaken the editor from that first commit $ touch "${MISCHIEF_MANAGED}" And wait for it to finish $ WAITLOCK_FILE="${JOBS_FINISHED}" sh "$TESTTMP_FORWARD_SLASH/waitlock_editor.sh" #if skip-detection (Ensure there was no output) $ cat .foo_commit_out And observe a corrupted repository -- rev 2's linkrev is 1, which should never happen for the changelog (the linkrev should always refer to itself). $ hg debugrevlogindex -c rev linkrev nodeid p1 p2 0 0 222799e2f90b 000000000000 000000000000 1 1 6f124f6007a0 222799e2f90b 000000000000 2 1 ac80e6205bb2 222799e2f90b 000000000000 #endif #if fail-if-detected $ cat .foo_commit_out note: commit message saved in .hg/last-message.txt note: use 'hg commit --logfile .hg/last-message.txt --edit' to reuse it transaction abort! rollback completed abort: 00changelog.i: file cursor at position 249, expected 121 And no corruption in the changelog. $ hg debugrevlogindex -c rev linkrev nodeid p1 p2 0 0 222799e2f90b 000000000000 000000000000 1 1 6f124f6007a0 222799e2f90b 000000000000 (missing-correct-output !) And, because of transactions, there's none in the manifestlog either. $ hg debugrevlogindex -m rev linkrev nodeid p1 p2 0 0 7b7020262a56 000000000000 000000000000 1 1 ad3fe36d86d9 7b7020262a56 000000000000 #endif