Question

I want to write some code to do the things below:

• If the input file (e.g.: "file.out") contains the info like "n failures, n errors", "n failures, 0 errors", or "0 failures, n errors" (where n >= 1), then puts "script failed" (because there are failures or errors displayed).

• If the input file contains the info: "0 failures, 0 errors", then puts "script passed" (because there are no failures and errors displayed).

I think I need to write something like below (but it does not work correctly as the scenario I expect):

if open("#{file}.out").grep(/[1-9][0-9]* failures|[1-9][0-9]* errors/).length > 0
   puts "script passed"
else
   puts "script failed"
end

How can I accomplish this?

Answer 1

def check_script file
  open(file) do |io|
    io.read =~ /(\d+)\s+failures,\s+(\d+)\s+errors/
    puts "script #{$1 == "0" && $2 == "0" ? "passed" : "failed"}"
  end
end

Usage:

check_script("file.out")