Nick Rosbrook
9dcfd6e8fe
With GNU coreutils, one can pass an argument to the "set" flag like:
date -s "-3 days"
With uutils coreutils, that gives an error:
error: unexpected argument '-3' found
tip: to pass '-3' as a value, use '-- -3'
That's a bug (https://github.com/uutils/coreutils/issues/9679), but both
implementations accept --set="-3 days" just fine, so use that instead.
28 lines
793 B
Bash
Executable File
28 lines
793 B
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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set -eux
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set -o pipefail
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# Reset host date to current time, 3 days in the past.
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date --set="-3 days"
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trap 'date --set="+3 days"' EXIT
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# Run a timer for every 15 minutes.
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systemd-run --unit test-timer --on-calendar "*:0/15:0" true
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next_elapsed=$(systemctl show test-timer.timer -p NextElapseUSecRealtime --value)
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next_elapsed=$(date -d "${next_elapsed}" +%s)
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now=$(date +%s)
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time_delta=$((next_elapsed - now))
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# Check that the timer will elapse in less than 20 minutes.
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if [[ "$time_delta" -lt 0 || "$time_delta" -gt 1200 ]]; then
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echo 'Timer elapse outside of the expected 20 minute window.'
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echo " next_elapsed=${next_elapsed}"
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echo " now=${now}"
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echo " time_delta=${time_delta}"
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echo
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exit 1
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fi
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