minesweeper: remove number from input, add mines

[petertseng]

an input containing only "8" implies that the student solution is
supposed to read a board with numbers and fill in the mines, which is
contrary to all other tests (read a board with mines, fill in the
numbers)

[rbasso]

Nice catch!

[petertseng]

Found with:

require 'json'

json = JSON.parse(IO.read('canonical-data.json'))

json['cases'].each { |c|
  input = c['input']
  output = c['expected']
  clean = output.map { |l| l.gsub(/\d/, ' ') }

  raise "Nope on #{c}, got #{clean}" if clean != input
}

https://github.com/petertseng/x-common/blob/verify/exercises/minesweeper/verify.rb

[stevejb71]

That was a good catch. Is the verify script something that could be added to the CI build?