Expect Script for Automated Testing of Apache NuttX RTOS over a USB Serial Port

test-nuttx.exp

#!/usr/bin/expect
## Expect Script for Testing NuttX over a USB Serial Port 

## Wait at most 300 seconds
set timeout 300

## For every 1 character sent, wait 0.001 milliseconds
set send_slow {1 0.001}

## Connect to SBC over USB Serial Port
spawn screen /dev/tty.usbserial-0001 115200

## Wake up NSH Shell
send -s "\r"

## Wait for the prompt and enter `uname -a`
expect "nsh> "
send -s "uname -a\r"

## Wait for the prompt and enter `free`
expect "nsh> "
send -s "free\r"

## Wait for the prompt and enter `hello`
expect "nsh> "
send -s "hello\r"

## Wait for the prompt and enter `getprime`
expect "nsh> "
send -s "getprime\r"

## Wait for the prompt and enter `hello`
expect "nsh> "
send -s "hello\r"

## Wait for the prompt and enter `getprime`
expect "nsh> "
send -s "getprime\r"

## Wait for the prompt and enter `ostest`
expect "nsh> "
send -s "ostest\r"

## Check the response...
expect {
  ## If we see this message, exit normally
  "ostest_main: Exiting with status 0" { 
    ## Terminate the session: Ctrl-A k y
    send "\x01ky"
    exit 0 
  }

  ## If timeout, exit with an error
  timeout { 
    ## Terminate the session: Ctrl-A k y
    send "\x01ky"
    exit 1 
  }
}