tests: API extension "console"

Closes canonical#1129.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

test/main.sh

@@ -189,6 +189,7 @@ run_test test_storage_driver_ceph "ceph storage driver"
 run_test test_resources "resources"
 run_test test_kernel_limits "kernel limits"
 run_test test_macaroon_auth "macaroon authentication"
+run_test test_console "console"
 
 # shellcheck disable=SC2034
 TEST_RESULT=success

test/suites/console.sh

@@ -0,0 +1,83 @@
+test_console() {
+  ensure_import_testimage
+
+  lxc init testimage cons1
+
+  # 1. Set a console log file but no ringbuffer.
+
+  # Test the console log file requests.
+  lxc start cons1
+
+  # No console log file set so this should return an error.
+  ! lxc console cons1 --show-log
+  lxc stop --force cons1
+
+  # Set a console log file but no ringbuffer.
+  # shellcheck disable=SC2034
+  CONSOLE_LOGFILE="$(mktemp -p "${LXD_DIR}" XXXXXXXXX)"
+  lxc config set cons1 raw.lxc "lxc.console.logfile=${CONSOLE_LOGFILE}"
+  lxc start cons1
+
+  # Let the container come up. Two seconds should be fine.
+  sleep 2
+
+  # Make sure there's something in the console ringbuffer.
+  echo 'some content' | lxc exec cons1 -- tee /dev/console
+
+  # Console log file set so this should return without an error.
+  lxc console cons1 --show-log
+
+  lxc stop --force cons1
+
+  # 2. Set a console ringbuffer but no log file.
+
+  # remove logfile
+  lxc config unset cons1 raw.lxc
+
+  # set console ringbuffer
+  lxc config set cons1 raw.lxc "lxc.console.logsize=auto"
+
+  lxc start cons1
+
+  # Let the container come up. Two seconds should be fine.
+  sleep 2
+
+  # Make sure there's something in the console ringbuffer.
+  echo 'some content' | lxc exec cons1 -- tee /dev/console
+  echo 'some more content' | lxc exec cons1 -- tee /dev/console
+
+  # Retrieve the ringbuffer contents.
+  lxc console cons1 --show-log
+
+  # 3. Set a console ringbuffer and a log file.
+
+  lxc stop --force cons1
+
+  lxc config unset cons1 raw.lxc
+
+  rm -f "${CONSOLE_LOGFILE}"
+  printf "lxc.console.logsize=auto\nlxc.console.logfile=%s" "${CONSOLE_LOGFILE}" | lxc config set cons1 raw.lxc -
+
+  lxc start cons1
+
+  # Let the container come up. Two seconds should be fine.
+  sleep 2
+
+  # Make sure there's something in the console ringbuffer.
+  echo 'Ringbuffer contents and log file contents must match' | lxc exec cons1 -- tee /dev/console
+
+  # Retrieve the ringbuffer contents.
+  RINGBUFFER_CONTENT=$(lxc console cons1 --show-log)
+  # Strip prefix added by the client tool.
+  RINGBUFFER_CONTENT="${RINGBUFFER_CONTENT#
+Console log:
+
+}"
+  # Give kernel time to sync data to disk
+  sleep 2
+  LOGFILE_CONTENT=$(cat "${CONSOLE_LOGFILE}")
+
+  [ "${RINGBUFFER_CONTENT}" = "${LOGFILE_CONTENT}" ]
+
+  lxc delete --force cons1
+}