Added test cases and rakefile to Active Support

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@310 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 29 insertions, 3 deletions

diff --git a/activesupport/lib/misc.rb b/activesupport/lib/misc.rb
index db842f6061..d2c3d4a045 100644
--- a/activesupport/lib/misc.rb
+++ b/activesupport/lib/misc.rb
@@ -1,6 +1,32 @@
 def silence_warnings
   old_verbose, $VERBOSE = $VERBOSE, nil
-  result = yield
-  $VERBOSE = old_verbose
-  return result
+  begin
+    yield
+  ensure
+    $VERBOSE = old_verbose
+  end
+end
+
+class Hash
+  # Return a new hash with all keys converted to symbols.
+  def symbolize_keys
+    inject({}) do |options, (key, value)|
+      options[key.to_sym] = value
+      options
+    end
+  end
+
+  # Destructively convert all keys to symbols.
+  def symbolize_keys!
+    keys.each do |key|
+      unless key.is_a?(Symbol)
+        self[key.to_sym] = self[key]
+        delete(key)
+      end
+    end
+    self
+  end
+
+  alias_method :to_options,  :symbolize_keys
+  alias_method :to_options!, :symbolize_keys!
 end