Add horizontal scroll (or line wrapping) to test output

[elgopher]

Is your feature request related to a problem? Please describe.
Currently there is no way to read wide text in test output. When text is to long, it is not visible in GUI.

Describe the solution you'd like
Add horizontal scroll to test output. Alternatively, line wrapping might be implemented.

Describe alternatives you've considered
Use printh to print values directly to host's terminal (when line wrapping works).

Additional context