testsuite: cover job-manager housekeeping

Problem: there is no test coverage for job-manager housekeeping.

Add a sharness script.

t/Makefile.am

@@ -144,6 +144,7 @@ TESTSCRIPTS = \
 	t2222-job-manager-limit-job-size.t \
 	t2223-job-manager-queue-priority-order-limited.t \
 	t2224-job-manager-queue-priority-order-unlimited.t \
+	t2226-housekeeping.t \
 	t2230-job-info-lookup.t \
 	t2231-job-info-eventlog-watch.t \
 	t2232-job-info-security.t \

t/t2226-housekeeping.t

@@ -0,0 +1,119 @@
+#!/bin/sh
+test_description='Test job manager housekeeping'
+
+. $(dirname $0)/sharness.sh
+
+test_under_flux 4
+
+flux setattr log-stderr-level 1
+
+waitfile="${SHARNESS_TEST_SRCDIR}/scripts/waitfile.lua"
+
+test_expect_success 'create housekeeping script' '
+	cat >housekeeping.sh <<-EOT &&
+	#!/bin/sh
+	trashdir=\$1
+	rank=\$(flux getattr rank)
+	touch \$trashdir/hkflag.\$rank
+	EOT
+	chmod +x housekeeping.sh
+'
+test_expect_success 'configure basic housekeeping' '
+	flux config load <<-EOT
+	[job-manager.housekeeping]
+	command = "$(pwd)/housekeeping.sh $(pwd)"
+	EOT
+'
+test_expect_success 'run a job on broker ranks 1-2' '
+	rm -f hkflag.* &&
+	flux run -N2 --requires=ranks:1-2 /bin/true
+'
+test_expect_success 'housekeeping script ran on ranks 1-2' '
+	$waitfile -t 30 hkflag.1 &&
+	$waitfile -t 30 hkflag.2
+'
+test_expect_success 'configure housekeeping with immediate release' '
+	flux config load <<-EOT
+	[job-manager.housekeeping]
+	command = "$(pwd)/housekeeping.sh $(pwd)"
+	release-after = "0"
+	EOT
+'
+test_expect_success 'run a job on all four ranks' '
+	rm -f hkflag.* &&
+	flux dmesg -C &&
+	flux run -n8 -N4 /bin/true
+'
+test_expect_success 'housekeeping script ran on ranks 0-3' '
+	$waitfile -t 30 hkflag.0 &&
+	$waitfile -t 30 hkflag.1 &&
+	$waitfile -t 30 hkflag.2 &&
+	$waitfile -t 30 hkflag.3
+'
+test_expect_success 'nodes were returned to scheduler separately' '
+	flux dmesg -H | grep sched-simple >sched.log &&
+	grep "free: rank0" sched.log &&
+	grep "free: rank1" sched.log &&
+	grep "free: rank2" sched.log &&
+	grep "free: rank3" sched.log
+'
+test_expect_success 'create housekeeping script with one 10s straggler' '
+	cat >housekeeping2.sh <<-EOT &&
+	#!/bin/sh
+	trashdir=\$1
+	rank=\$(flux getattr rank)
+	test \$rank -eq 3 && sleep 10
+	touch \$trashdir/hkflag.\$rank
+	EOT
+	chmod +x housekeeping2.sh
+'
+test_expect_success 'configure housekeeping with release after 5s' '
+	flux config load <<-EOT
+	[job-manager.housekeeping]
+	command = "$(pwd)/housekeeping2.sh $(pwd)"
+	release-after = "5s"
+	EOT
+'
+test_expect_success 'run a job on all four ranks' '
+	rm -f hkflag.* &&
+	flux dmesg -C &&
+	flux run -n8 -N4 /bin/true
+'
+test_expect_success 'housekeeping script ran on ranks 0-3' '
+	$waitfile -t 30 hkflag.0 &&
+	$waitfile -t 30 hkflag.1 &&
+	$waitfile -t 30 hkflag.2 &&
+	$waitfile -t 30 hkflag.3
+'
+test_expect_success 'there was one alloc and two frees to the scheduler' '
+	flux dmesg -H | grep sched-simple >sched2.log &&
+	grep "free: rank\[0-2\]" sched2.log &&
+	grep "free: rank3" sched2.log
+'
+test_expect_success 'configuring housekeeping with bad key fails' '
+	test_must_fail flux config load 2>load.err <<-EOT &&
+	[job-manager.housekeeping]
+	xyz = 42
+	EOT
+	grep "left unpacked" load.err
+'
+test_expect_success 'configuring housekeeping with bad fsd fails' '
+	test_must_fail flux config load 2>load2.err <<-EOT &&
+	[job-manager.housekeeping]
+	command = "/bin/true"
+	release-after = "foo"
+	EOT
+	grep "FSD parse error" load2.err
+'
+test_expect_success 'configure housekeeping with wrong path' '
+	flux config load <<-EOT
+	[job-manager.housekeeping]
+	command = "/noexist"
+	EOT
+'
+test_expect_success 'run a job and ensure error was logged' '
+	flux dmesg -C &&
+	flux run /bin/true &&
+	flux dmesg | grep "error launching process"
+'
+test_done