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#testcases skip-detection fail-if-detected
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Test situations that "should" only be reproducible:
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- on networked filesystems, or
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- user using `hg debuglocks` to eliminate the lock file, or
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- something (that doesn't respect the lock file) writing to the .hg directory
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while we're running
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$ hg init a
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$ cd a
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$ cat > "$TESTTMP_FORWARD_SLASH/waitlock_editor.sh" <<EOF
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> [ -n "\${WAITLOCK_ANNOUNCE:-}" ] && touch "\${WAITLOCK_ANNOUNCE}"
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> f="\${WAITLOCK_FILE}"
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> start=\`date +%s\`
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> timeout=5
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> "$RUNTESTDIR_FORWARD_SLASH/testlib/wait-on-file" "\$timeout" "\$f"
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> if [ \$# -gt 1 ]; then
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> cat "\$@"
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> fi
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> EOF
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Things behave differently if we don't already have a 00changelog.i file when
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this all starts, so let's make one.
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$ echo r0 > r0
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$ hg commit -qAm 'r0'
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Start an hg commit that will take a while
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$ EDITOR_STARTED="$TESTTMP_FORWARD_SLASH/a/.editor_started"
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$ MISCHIEF_MANAGED="$TESTTMP_FORWARD_SLASH/a/.mischief_managed"
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$ JOBS_FINISHED="$TESTTMP_FORWARD_SLASH/a/.jobs_finished"
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#if fail-if-detected
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$ cat >> .hg/hgrc << EOF
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> [debug]
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> revlog.verifyposition.changelog = fail
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> EOF
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#endif
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$ cat >> .hg/hgrc << EOF
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> [ui]
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> editor=sh $TESTTMP_FORWARD_SLASH/waitlock_editor.sh
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> EOF
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$ echo foo > foo
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$ (unset HGEDITOR;
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> WAITLOCK_ANNOUNCE="${EDITOR_STARTED}" \
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> WAITLOCK_FILE="${MISCHIEF_MANAGED}" \
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> hg commit -qAm 'r1 (foo)' --edit foo > .foo_commit_out 2>&1 ; touch "${JOBS_FINISHED}") &
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Wait for the "editor" to actually start
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$ sh "$RUNTESTDIR_FORWARD_SLASH/testlib/wait-on-file" 5 "${EDITOR_STARTED}"
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$ cat >> .hg/hgrc << EOF
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> [ui]
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> editor=
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> EOF
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Break the locks, and make another commit.
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$ hg debuglocks -LW
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$ echo bar > bar
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$ hg commit -qAm 'r2 (bar)' bar
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$ hg debugrevlogindex -c
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rev linkrev nodeid p1 p2
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0 0 222799e2f90b 000000000000 000000000000
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1 1 6f124f6007a0 222799e2f90b 000000000000
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Awaken the editor from that first commit
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$ touch "${MISCHIEF_MANAGED}"
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And wait for it to finish
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$ WAITLOCK_FILE="${JOBS_FINISHED}" sh "$TESTTMP_FORWARD_SLASH/waitlock_editor.sh"
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#if skip-detection
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(Ensure there was no output)
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$ cat .foo_commit_out
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And observe a corrupted repository -- rev 2's linkrev is 1, which should never
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happen for the changelog (the linkrev should always refer to itself).
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$ hg debugrevlogindex -c
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rev linkrev nodeid p1 p2
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0 0 222799e2f90b 000000000000 000000000000
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1 1 6f124f6007a0 222799e2f90b 000000000000
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2 1 ac80e6205bb2 222799e2f90b 000000000000
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#endif
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#if fail-if-detected
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$ cat .foo_commit_out
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transaction abort!
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rollback completed
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note: commit message saved in .hg/last-message.txt
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note: use 'hg commit --logfile .hg/last-message.txt --edit' to reuse it
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abort: 00changelog.i: file cursor at position 249, expected 121
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And no corruption in the changelog.
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$ hg debugrevlogindex -c
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rev linkrev nodeid p1 p2
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0 0 222799e2f90b 000000000000 000000000000
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1 1 6f124f6007a0 222799e2f90b 000000000000 (missing-correct-output !)
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And, because of transactions, there's none in the manifestlog either.
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$ hg debugrevlogindex -m
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rev linkrev nodeid p1 p2
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0 0 7b7020262a56 000000000000 000000000000
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1 1 ad3fe36d86d9 7b7020262a56 000000000000
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#endif
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