run_single_minitest_unit_test_like_rspec.rb

#!/usr/bin/env ruby

if ARGV[0].nil?
  puts "You must provide a file name."
  return
end

ENV['TEST'], line_number = ARGV[0].split(":")
line_number = line_number.to_i - 1

if line_number.nil?
  system("bin/rake test")
else
  begin
    file = File.read(ENV['TEST'])
    line = file.lines[line_number]
    while !line.match(/\A\s+test.*do\s*\z/) && line_number > 0
      line_number -= 1
      line = file.lines[line_number]
    end
    if line_number == 0
      puts "There is no test above this line"
      return
    end
    start = file.lines[line_number].index(/("|')/) + 1
    finish = file.lines[line_number].size -
      file.lines[line_number].reverse.index(/("|')/) - 2
    test_name = file.lines[line_number][start..finish].gsub(" ", "_")
    ENV['TESTOPTS'] = "--name=test_#{test_name}"
  rescue => e
    puts e.message
  end
end
system("bin/rake test")