Test conditional logic with/without parens

test.rb

#!/usr/bin/env ruby

def is_foo(foo='bar')
  foo == 'foo'
end

def is_bar(foo='bar')
  foo == 'bar'
end

should_build1 = false
should_build2 = false
git_branch = ARGV[0]

unless is_foo git_branch || is_bar(git_branch)
  should_build1 = true
end
puts "old way: #{should_build1}"

unless is_foo(git_branch) || is_bar(git_branch)
  should_build2 = true
end
puts "new way: #{should_build2}"