proper test for multi-region requiring

lib/holidays.rb

@@ -252,6 +252,8 @@ private
     # Found sub region wild-card
     regions.delete_if do |reg|
       if reg.to_s =~ /_$/
+        prefix = reg.to_s.split('_').first
+        raise UnknownRegionError unless @@regions.include?(prefix.to_sym) or begin require "holidays/#{prefix}"; rescue LoadError; false; end
         regions << @@regions.select { |dr| dr.to_s =~ Regexp.new("^#{reg}") }
         true
       end
@@ -261,7 +263,7 @@ private
 
     require "holidays/north_america" if regions.include?(:us) # special case for north_america/US cross-linking
 
-    raise UnknownRegionError unless regions.all? { |r| r == :any or @@regions.include?(r) or begin require "holidays/#{r.to_s.split('_').first}"; rescue LoadError; false; end }
+    raise UnknownRegionError unless regions.all? { |r| r == :any or @@regions.include?(r) or begin require "holidays/#{r.to_s}"; rescue LoadError; false; end }
     regions
   end
 

test/test_multiple_regions.rb

@@ -1,6 +1,4 @@
 require File.dirname(__FILE__) + '/test_helper'
-require 'holidays/gb'
-require 'holidays/ie'
 
 class MultipleRegionsTests < Test::Unit::TestCase
   def setup
@@ -11,6 +9,10 @@ class MultipleRegionsTests < Test::Unit::TestCase
     h = Holidays.on(Date.civil(2008,12,26), :ie)
     assert_equal 'St. Stephen\'s Day', h[0][:name]
 
+    h = Holidays.on(Date.civil(2008,5,9), :gb_)
+    assert_equal 'Liberation Day', (h[0] || {})[:name]
+
+
     h = Holidays.on(Date.civil(2008,5,9), :je)
     assert_equal 'Liberation Day', h[0][:name]