test-racy-mutations.t
102 lines
| 3.4 KiB
| text/troff
|
Tads3Lexer
/ tests / test-racy-mutations.t
Kyle Lippincott
|
r47349 | #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 | ||||
$ hg init a | ||||
$ cd a | ||||
$ cat > "$TESTTMP/waitlock_editor.sh" <<EOF | ||||
> [ -n "\${WAITLOCK_ANNOUNCE:-}" ] && touch "\${WAITLOCK_ANNOUNCE}" | ||||
> f="\${WAITLOCK_FILE}" | ||||
> start=\`date +%s\` | ||||
> timeout=5 | ||||
> while [ \\( ! -f \$f \\) -a \\( ! -L \$f \\) ]; do | ||||
> now=\`date +%s\` | ||||
> if [ "\`expr \$now - \$start\`" -gt \$timeout ]; then | ||||
> echo "timeout: \$f was not created in \$timeout seconds (it is now \$(date +%s))" | ||||
> exit 1 | ||||
> fi | ||||
> sleep 0.1 | ||||
> done | ||||
> if [ \$# -gt 1 ]; then | ||||
> cat "\$@" | ||||
> fi | ||||
> EOF | ||||
$ chmod +x "$TESTTMP/waitlock_editor.sh" | ||||
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' | ||||
Start an hg commit that will take a while | ||||
$ EDITOR_STARTED="$(pwd)/.editor_started" | ||||
$ MISCHIEF_MANAGED="$(pwd)/.mischief_managed" | ||||
$ JOBS_FINISHED="$(pwd)/.jobs_finished" | ||||
#if fail-if-detected | ||||
$ cat >> .hg/hgrc << EOF | ||||
> [debug] | ||||
> revlog.verifyposition.changelog = fail | ||||
> EOF | ||||
#endif | ||||
$ echo foo > foo | ||||
$ (WAITLOCK_ANNOUNCE="${EDITOR_STARTED}" \ | ||||
> WAITLOCK_FILE="${MISCHIEF_MANAGED}" \ | ||||
> HGEDITOR="$TESTTMP/waitlock_editor.sh" \ | ||||
> hg commit -qAm 'r1 (foo)' --edit foo > .foo_commit_out 2>&1 ; touch "${JOBS_FINISHED}") & | ||||
Wait for the "editor" to actually start | ||||
$ WAITLOCK_FILE="${EDITOR_STARTED}" "$TESTTMP/waitlock_editor.sh" | ||||
Break the locks, and make another commit. | ||||
$ hg debuglocks -LW | ||||
$ echo bar > bar | ||||
$ hg commit -qAm 'r2 (bar)' bar | ||||
$ hg debugrevlogindex -c | ||||
rev linkrev nodeid p1 p2 | ||||
0 0 222799e2f90b 000000000000 000000000000 | ||||
1 1 6f124f6007a0 222799e2f90b 000000000000 | ||||
Awaken the editor from that first commit | ||||
$ touch "${MISCHIEF_MANAGED}" | ||||
And wait for it to finish | ||||
$ WAITLOCK_FILE="${JOBS_FINISHED}" "$TESTTMP/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 | ||||
transaction abort! | ||||
rollback completed | ||||
note: commit message saved in .hg/last-message.txt | ||||
note: use 'hg commit --logfile .hg/last-message.txt --edit' to reuse it | ||||
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 | ||||
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 | ||||