1 files changed, 72 insertions, 0 deletions
diff --git a/test/units/testsuite-09.journal.sh b/test/units/testsuite-09.journal.sh
new file mode 100755
index 0000000..2ef192c
--- /dev/null
+++ b/test/units/testsuite-09.journal.sh
@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+set -eux
+set -o pipefail
+
+# shellcheck source=test/units/util.sh
+. "$(dirname "$0")"/util.sh
+
+get_first_boot_id() {
+    journalctl -b "${1:?}" -o json -n +1 | jq -r '._BOOT_ID'
+}
+
+get_last_boot_id() {
+    journalctl -b "${1:?}" -o json -n 1 | jq -r '._BOOT_ID'
+}
+
+get_first_timestamp() {
+    journalctl -b "${1:?}" -o json -n +1 | jq -r '.__REALTIME_TIMESTAMP'
+}
+
+get_last_timestamp() {
+    journalctl -b "${1:?}" -o json -n 1 | jq -r '.__REALTIME_TIMESTAMP'
+}
+
+# Issue: #29275, second part
+# Now let's check if the boot entries are in the correct/expected order
+index=0
+SYSTEMD_LOG_LEVEL=debug journalctl --list-boots
+journalctl --list-boots -o json | jq -r '.[] | [.index, .boot_id, .first_entry, .last_entry] | @tsv' |
+    while read -r offset boot_id first_ts last_ts; do
+        : "Boot #$((++index)) ($offset) with ID $boot_id"
+
+        # Try the "regular" (non-json) variants first, as they provide a helpful
+        # error message if something is not right
+        SYSTEMD_LOG_LEVEL=debug journalctl -q -n 0 -b "$index"
+        SYSTEMD_LOG_LEVEL=debug journalctl -q -n 0 -b "$offset"
+        SYSTEMD_LOG_LEVEL=debug journalctl -q -n 0 -b "$boot_id"
+
+        # Check the boot ID of the first entry
+        entry_boot_id="$(get_first_boot_id "$index")"
+        assert_eq "$entry_boot_id" "$boot_id"
+        entry_boot_id="$(get_first_boot_id "$offset")"
+        assert_eq "$entry_boot_id" "$boot_id"
+        entry_boot_id="$(get_first_boot_id "$boot_id")"
+        assert_eq "$entry_boot_id" "$boot_id"
+
+        # Check the timestamp of the first entry
+        entry_ts="$(get_first_timestamp "$index")"
+        assert_eq "$entry_ts" "$first_ts"
+        entry_ts="$(get_first_timestamp "$offset")"
+        assert_eq "$entry_ts" "$first_ts"
+        entry_ts="$(get_first_timestamp "$boot_id")"
+        assert_eq "$entry_ts" "$first_ts"
+
+        # Check the boot ID of the last entry
+        entry_boot_id="$(get_last_boot_id "$index")"
+        assert_eq "$entry_boot_id" "$boot_id"
+        entry_boot_id="$(get_last_boot_id "$offset")"
+        assert_eq "$entry_boot_id" "$boot_id"
+        entry_boot_id="$(get_last_boot_id "$boot_id")"
+        assert_eq "$entry_boot_id" "$boot_id"
+
+        # Check the timestamp of the last entry
+        if [[ "$offset" != "0" ]]; then
+            entry_ts="$(get_last_timestamp "$index")"
+            assert_eq "$entry_ts" "$last_ts"
+            entry_ts="$(get_last_timestamp "$offset")"
+            assert_eq "$entry_ts" "$last_ts"
+            entry_ts="$(get_last_timestamp "$boot_id")"
+            assert_eq "$entry_ts" "$last_ts"
+        fi
+    done