Added OrderedHash#delete [#113 state:resolved]

Signed-off-by: Joshua Peek <josh@joshpeek.com>

activesupport/lib/active_support/ordered_options.rb

@@ -18,6 +18,12 @@ module ActiveSupport
         pair = assoc(key)
         pair ? pair.last : nil
       end
+      
+      def delete(key)
+        pair = assoc(key)
+        pair ? array_index = index(pair) : nil
+        array_index ? delete_at(array_index).last : nil
+      end
 
       def keys
         collect { |key, value| key }

activesupport/test/ordered_options_test.rb

@@ -29,6 +29,19 @@ class OrderedHashTest < Test::Unit::TestCase
     assert_equal value, @ordered_hash.values.last
     assert_equal value, @ordered_hash[key]
   end
+  
+  def test_delete
+    key, value = 'white', 'ffffff'
+    bad_key = 'black'
+    
+    @ordered_hash[key] = value
+    assert_equal @keys.length + 1, @ordered_hash.length
+    
+    assert_equal value, @ordered_hash.delete(key)
+    assert_equal @keys.length, @ordered_hash.length
+    
+    assert_nil @ordered_hash.delete(bad_key)
+  end
 end
 
 class OrderedOptionsTest < Test::Unit::TestCase