me hacking around with ansible_spec and ruby

hacky.rb

#!/bin/env ruby
require 'hostlist_expression'
#
def parse_inventory_file (filecontent)
 group_map = {}
 group_map.default = []
 group = []
 g = Array.new
 #parse the name of the group, and all hosts in it 
 filecontent.each_line{|line|
   line = line.chomp
   if line.start_with?('#') #comment
     next
   end
   if line.empty? == true   #null
     next
   end
   if line.start_with?('[') && line.end_with?(']')
     group = line.gsub('[','').gsub(']','')

   elsif line.split.count == 1 && line.include?("[") && line.include?("]")
     hostlist_expression(line,":").each{|host|
       g = g.push(group) unless g.include?(group)
       group_map[host] = g
     }

   else
     host = line
     group_map[host] = group_map[host].push(group)
   end
 }
 return group_map
end

expected_input1 = <<-EOF
[group1]
clarinet001-135
EOF

expected_output1 = { 'clarinet001-135' => ['group1'] } 

expected_input2 = <<-EOF
[group1]
clarinet001-[135:137]
EOF

expected_output2 = { 'clarinet001-135' => ['group1'], 'clarinet001-136' => ['group1'], 'clarinet001-137' => ['group1'] } 

expected_input3 = <<-EOF
[group1]
clarinet001-135

[group2]
clarinet001-135
EOF

expected_output3 = { 'clarinet001-135' => ['group1', 'group2'] } 



## Tests
## Test Hosts/Groups
actual_output1 = parse_inventory_file(expected_input1) 
if actual_output1 == expected_output1
 puts 'Passed'
else
 puts "Failed expected #{expected_output1} got #{actual_output1}"
end

## Test ranges
actual_output2 = parse_inventory_file(expected_input2) 
if actual_output2 == expected_output2
 puts 'Passed'
else
 puts "Failed I expected: \n #{expected_output2} \nI got: \n #{actual_output2}"
end
## Test server that has multiple groups
actual_output3 = parse_inventory_file(expected_input3) 
if actual_output3 == expected_output3
 puts 'Passed'
else
 puts "Failed I expected: \n #{expected_output3} \nI got: \n #{actual_output3}"
end