test: add integration tests for io.systemd.Job varlink methods

Co-developed-by: Claude Opus 4.6 <noreply@anthropic.com>

diff --git a/test/units/TEST-74-AUX-UTILS.varlinkctl-job.sh b/test/units/TEST-74-AUX-UTILS.varlinkctl-job.sh
new file mode 100755 (executable)
index 0000000..032904b
--- /dev/null
+++ b/test/units/TEST-74-AUX-UTILS.varlinkctl-job.sh
@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+set -eux
+set -o pipefail
+
+# test io.systemd.Job
+varlinkctl introspect /run/systemd/io.systemd.Manager io.systemd.Job
+
+# List with no jobs pending — should return empty with --more
+varlinkctl --more call /run/systemd/io.systemd.Manager io.systemd.Job.List '{}' --graceful=io.systemd.Job.NoSuchJob
+
+# Without --more and no filter, must fail (streaming required)
+(! varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{}')
+
+# Error cases: non-existent job ID, non-existent unit
+(! varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{"id": 999999}')
+(! varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{"unit": "non-existent.service"}')
+
+# Invalid inputs
+(! varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{"id": 0}')
+(! varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{"unit": ""}')
+
+at_exit() {
+    systemctl stop varlink-test-job.service 2>/dev/null || true
+    rm -f /run/systemd/system/varlink-test-job.service
+    systemctl daemon-reload
+}
+trap at_exit EXIT
+
+# Create a job by starting a slow service, then test List/Cancel
+cat >/run/systemd/system/varlink-test-job.service <<UNIT
+[Service]
+Type=notify
+ExecStart=sleep infinity
+UNIT
+systemctl daemon-reload
+
+# Start asynchronously to create a job
+systemctl start --no-block varlink-test-job.service
+
+# The job should now be visible
+job_id=$(varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{"unit": "varlink-test-job.service"}' | jq -r '.Id')
+test "$job_id" -gt 0
+
+# Verify job fields
+varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{"unit": "varlink-test-job.service"}' | jq -e '.Unit == "varlink-test-job.service"'
+varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{"unit": "varlink-test-job.service"}' | jq -e '.JobType == "start"'
+varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{"unit": "varlink-test-job.service"}' | jq -e '.State'
+
+# Lookup by job ID should return the same job
+varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List "{\"id\": $job_id}" | jq -e ".Unit == \"varlink-test-job.service\""
+
+# Lookup by both id and unit (matching) should succeed
+varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List "{\"id\": $job_id, \"unit\": \"varlink-test-job.service\"}" | jq -e ".Id == $job_id"
+
+# Lookup by both id and unit (conflicting) should fail
+(! varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List "{\"id\": $((job_id + 1)), \"unit\": \"varlink-test-job.service\"}")
+
+# The job should appear in the full listing
+varlinkctl --more call /run/systemd/io.systemd.Manager io.systemd.Job.List '{}' | grep "varlink-test-job.service"
+
+# Cancel the job
+varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.Cancel "{\"id\": $job_id}"
+
+# The job should no longer exist
+(! varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{"unit": "varlink-test-job.service"}')
+
+# Cancel with non-existent job ID should fail
+(! varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.Cancel '{"id": 999999}')
+
+# Test ClearAll: create another job, then clear all
+systemctl start --no-block varlink-test-job.service
+varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{"unit": "varlink-test-job.service"}' | jq -e '.Id'
+varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.ClearAll '{}'
+
+# No jobs should remain for our test unit
+(! varlinkctl call /run/systemd/io.systemd.Manager io.systemd.Job.List '{"unit": "varlink-test-job.service"}')