privacy-guides/how-to-create-encrypted-paper-backup/tests/secure-erase.exp

#!/usr/bin/expect

source ./test.exp

set timeout 300

# Above timeout will likely not be long enough for all USB flash drives

test_label "Should secure erase USB flash drive"

spawn secure-erase.sh

expect {
  -re {Secure erase USB flash drive \(y or n\)\?} {
    test_send "y\r" 
  }
}

expect {
  -re {Overwriting with random data… \(round 1 of 3\)}
}

expect {
  -re {\[sudo\] password for pi:} {
    test_send "$env(password)\r"
  }
}

expect {
  -re {dd: error writing '\/dev\/sda1': No space left on device}
}

expect {
  -re {Overwriting with random data… \(round 2 of 3\)}
}

expect {
  -re {dd: error writing '\/dev\/sda1': No space left on device}
}

expect {
  -re {Overwriting with random data… \(round 3 of 3\)}
}

expect {
  -re {dd: error writing '\/dev\/sda1': No space left on device}
}

expect {
  -re {Done} {
    test_ok
  }
  eof {
    test_failed
  }
}

test_label "Should secure erase flash drive using single round random overwrite and zero overwrite"

spawn secure-erase.sh --rounds 1 --zero

expect {
  -re {Secure erase USB flash drive \(y or n\)\?} {
    test_send "y\r" 
  }
}

expect {
  -re {Overwriting with random data… \(round 1 of 1\)}
}

expect {
  -re {\[sudo\] password for pi:} {
    test_send "$env(password)\r"
  }
}

expect {
  -re {dd: error writing '\/dev\/sda1': No space left on device}
}

expect {
  -re {Overwriting with zeros…}
}

expect {
  -re {dd: error writing '\/dev\/sda1': No space left on device}
}

expect {
  -re {Done} {
    test_ok
  }
  eof {
    test_failed
  }
}