TEST-07-PID1: add test cases for DeferTrigger=

diff --git a/test/units/TEST-07-PID1.socket-defer.sh b/test/units/TEST-07-PID1.socket-defer.sh
new file mode 100755 (executable)
index 0000000..ec04f4f
--- /dev/null
+++ b/test/units/TEST-07-PID1.socket-defer.sh
@@ -0,0 +1,151 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# shellcheck disable=SC2016
+set -eux
+set -o pipefail
+
+# shellcheck source=test/units/util.sh
+. "$(dirname "$0")"/util.sh
+
+UNIT_NAME="TEST-07-PID1-socket-defer-$RANDOM"
+
+at_exit() {
+    systemctl stop "$UNIT_NAME*"
+    rm -f /run/systemd/system/"$UNIT_NAME".socket \
+        /run/systemd/system/"$UNIT_NAME"{,-conflict1,-conflict2,-forever}.service
+}
+
+trap at_exit EXIT
+
+mkdir -p "/tmp/$UNIT_NAME"
+
+cat >/run/systemd/system/"$UNIT_NAME-conflict1.service" <<EOF
+[Service]
+Type=oneshot
+ExecStart=bash -c 'until [[ -f /tmp/$UNIT_NAME/flag ]]; do sleep 1; done'
+TimeoutStartSec=infinity
+EOF
+
+cat >/run/systemd/system/"$UNIT_NAME-conflict2.service" <<EOF
+[Service]
+ExecStart=bash -c 'while [[ -f /tmp/$UNIT_NAME/flag ]]; do sleep 1; done'
+EOF
+
+cat >/run/systemd/system/"$UNIT_NAME-forever.service" <<EOF
+[Service]
+Type=oneshot
+ExecStart=sleep infinity
+TimeoutSec=infinity
+EOF
+
+cat >/run/systemd/system/"$UNIT_NAME.socket" <<EOF
+[Socket]
+ListenStream=/tmp/$UNIT_NAME/test
+FlushPending=yes
+EOF
+
+cat >/run/systemd/system/"$UNIT_NAME.service" <<EOF
+[Unit]
+Conflicts=$UNIT_NAME-conflict1.service
+Conflicts=$UNIT_NAME-conflict2.service
+
+[Service]
+ExecStart=sleep infinity
+EOF
+
+wait_for_start() {
+    timeout 30 bash -c "until systemctl -q is-active '$UNIT_NAME.service'; do sleep .5; done"
+    assert_eq "$(systemctl show "$UNIT_NAME.socket" -P SubState)" "running"
+}
+
+wait_for_stop() {
+    timeout 30 bash -c "while systemctl -q is-active '$UNIT_NAME.service'; do sleep .5; done"
+    assert_eq "$(systemctl show "$UNIT_NAME.socket" -P SubState)" "listening"
+}
+
+# DeferTrigger=no: job mode replace
+
+systemctl start "$UNIT_NAME.socket"
+[[ -S "/tmp/$UNIT_NAME/test" ]]
+assert_eq "$(systemctl show "$UNIT_NAME.socket" -P SubState)" "listening"
+(! systemctl -q is-active "$UNIT_NAME.service")
+
+socat -u - UNIX-CONNECT:"/tmp/$UNIT_NAME/test" &
+wait_for_start
+kill %%
+
+touch "/tmp/$UNIT_NAME/flag"
+systemctl start "$UNIT_NAME-conflict2.service"
+wait_for_stop
+
+socat -u - UNIX-CONNECT:"/tmp/$UNIT_NAME/test" &
+wait_for_start
+kill %%
+(! systemctl -q is-active "$UNIT_NAME-conflict2.service")
+
+# DeferTrigger=yes
+
+echo "DeferTrigger=yes" >>/run/systemd/system/"$UNIT_NAME.socket"
+systemctl daemon-reload
+
+assert_eq "$(systemctl show "$UNIT_NAME.socket" -P SubState)" "running"
+rm "/tmp/$UNIT_NAME/flag"
+systemctl start --no-block "$UNIT_NAME-conflict1.service"
+wait_for_stop
+assert_eq "$(systemctl show "$UNIT_NAME-conflict1.service" -P SubState)" "start"
+
+# Wait in "deferred" state
+
+socat -u - UNIX-CONNECT:"/tmp/$UNIT_NAME/test" &
+timeout 30 bash -c "until [[ \$(systemctl show '$UNIT_NAME.socket' -P SubState) == 'deferred' ]]; do sleep .5; done"
+(! systemctl -q is-active "$UNIT_NAME.service")
+kill %%
+assert_eq "$(systemctl show "$UNIT_NAME-conflict1.service" -P SubState)" "start"
+
+systemctl daemon-reload
+timeout 10 bash -c "until [[ \$(systemctl show '$UNIT_NAME.socket' -P SubState) == 'deferred' ]]; do sleep .2; done"
+(! systemctl -q is-active "$UNIT_NAME.service")
+assert_eq "$(systemctl show "$UNIT_NAME-conflict1.service" -P SubState)" "start"
+
+# Activate after conflicting unit exits
+
+touch "/tmp/$UNIT_NAME/flag"
+timeout 30 bash -c "while systemctl -q is-active '$UNIT_NAME-conflict1.service'; do sleep .2; done"
+wait_for_start
+
+# An irrelevant job running, during which one of the conflicting units exits
+
+systemctl start --no-block "$UNIT_NAME-forever.service"
+systemctl start "$UNIT_NAME-conflict2.service"
+wait_for_stop
+
+socat -u - UNIX-CONNECT:"/tmp/$UNIT_NAME/test" &
+timeout 30 bash -c "until [[ \$(systemctl show '$UNIT_NAME.socket' -P SubState) == 'deferred' ]]; do sleep .5; done"
+(! systemctl -q is-active "$UNIT_NAME.service")
+kill %%
+
+rm "/tmp/$UNIT_NAME/flag"
+timeout 30 bash -c "while systemctl -q is-active '$UNIT_NAME-conflict2.service'; do sleep .2; done"
+wait_for_start
+assert_eq "$(systemctl show "$UNIT_NAME-forever.service" -P SubState)" "start"
+
+# Fail if DeferTriggerMaxSec= is reached
+
+systemctl start --no-block "$UNIT_NAME-conflict1.service"
+wait_for_stop
+assert_eq "$(systemctl show "$UNIT_NAME-conflict1.service" -P SubState)" "start"
+
+socat -u - UNIX-CONNECT:"/tmp/$UNIT_NAME/test" &
+timeout 30 bash -c "until [[ \$(systemctl show '$UNIT_NAME.socket' -P SubState) == 'deferred' ]]; do sleep .5; done"
+(! systemctl -q is-active "$UNIT_NAME.service")
+kill %%
+
+echo "DeferTriggerMaxSec=20s" >>/run/systemd/system/"$UNIT_NAME.socket"
+systemctl daemon-reload
+
+timeout 10 bash -c "until [[ \$(systemctl show '$UNIT_NAME.socket' -P SubState) == 'deferred' ]]; do sleep .2; done"
+(! systemctl -q is-active "$UNIT_NAME.service")
+
+sleep 10
+timeout 30 bash -c "until systemctl -q is-failed '$UNIT_NAME.socket'; do sleep .5; done"
+assert_eq "$(systemctl show "$UNIT_NAME-conflict1.service" -P SubState)" "start"