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test: add testcase for 'journalctl --follow --cursor-file='
Also, add a FIXME comment to illustrate the issue uncovered after by
7a4ee86161
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@ -161,6 +161,26 @@ journalctl --follow --file=/var/log/journal/*/* | head -n1 | grep .
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journalctl --follow --merge | head -n1 | grep .
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set -o pipefail
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# https://github.com/systemd/systemd/issues/26746
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rm -f /tmp/issue-26746-log /tmp/issue-26746-cursor
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ID=$(systemd-id128 new)
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# FIXME:
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# After the commit 7a4ee861615101ddd2f95056cf30e69e41da86ce,
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# journalctl --follow does not work if no matching entry stored in the journal.
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# To workaround the issue, we need to add an entry before calling journalctl below.
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systemd-cat -t "$ID" /bin/sh -c 'echo aaa'
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journalctl -t "$ID" --follow --cursor-file=/tmp/issue-26746-cursor | tee /tmp/issue-26746-log &
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systemd-cat -t "$ID" /bin/sh -c 'echo hogehoge'
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# shellcheck disable=SC2016
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timeout 10 bash -c 'while ! [[ -f /tmp/issue-26746-log && "$(cat /tmp/issue-26746-log)" =~ hogehoge ]]; do sleep .5; done'
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pkill -TERM journalctl
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test -f /tmp/issue-26746-cursor
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CURSOR_FROM_FILE=$(cat /tmp/issue-26746-cursor)
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CURSOR_FROM_JOURNAL=$(journalctl -t "$ID" --output export MESSAGE=hogehoge | sed -n -e '/__CURSOR=/ { s/__CURSOR=//; p }')
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test "$CURSOR_FROM_FILE" = "$CURSOR_FROM_JOURNAL"
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add_logs_filtering_override() {
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local unit="${1:?}"
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local override_name="${2:?}"
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