Checkbox Remote

It is possible to run Checkbox tests on a device that you don’t or cannot have traditional control over (mouse/keyboard).

By using Checkbox Remote facilities you can use Checkbox on one device to control Checkbox running on a different device.

This is especially useful on headless devices.

Comparison with SSH

It’s easy to lose SSH connection with the SUT, and if the device doesn’t offer screen-like funcitonality then the Checkbox session has to be started over.

When a UI is drawn a lot of data is transmitted through the network. Checkbox Remote sends lean data only.


Checkbox Slave - the Checkbox instance that runs on the System or Device under test and _executes_ the tests.

Checkbox Master - Checkbox instance that controls the execution of tests on the Slave, such as a laptop.

checkbox-cli slave

checkbox-cli master HOST [/PATH/TO/LAUNCHER]

HOST can be an IP or a hostname that your device can resolve.

LAUNCHER (optional) a launcher file to use that exists somewhere on the machine you are using as the Master.

checkbox-cli master dut8.local /home/ubuntu/testplans/sutton-client

Custom port

By default Slave listens on port 18871. To change that --port option can be used. The same option used on Master specifies which port to connect to.


checkbox-cli slave --port 10101

checkbox-cli master dut8.local --port 10101

Session control

While Master is connected, sending SIGINT (hitting ctrl+c) to the application invokes the interrupt screen:


First action is “Cancel the interruption”, which returns to the session (Does nothing). You can also press ESC on the Interruption screen to select that action.

Second action is “Disconnect the master”. It leaves the session on the Slave running, but the Master exits. You can also hit ctrl+c again to select that action (terminate the master). You can reconnect to the Slave and resume testing like the interruption never happened.

Third action is “Stop the Checkbox slave”. It stops the session and terminates the Checkbox process on the Slave. It also stops the master.

Fourth action is “Abandon the session”. It stops and _removes_ the session on the Slave and immediately starts another one. After the new session is started Master is greeted with test plan selection screen. This is a good moment to disconnect the master if you wish to run testing at a later time.

Remote session characteristics

Differences between remote session and a local one are:

  • Unless session is explicitly abandoned, Checkbox Slave always resumes the last session.
  • After testing is done, Slave starts another session
  • Submission is done from the Master by default (use: local_submission = No in launcher or config to change that)
  • When Master reconnects mid interactive test, the test is restarted.
  • Hitting ctrl+c in Master doesn’t interrupt the running test.