Add #to_h to cookie.rb

lib/http/cookie.rb

@@ -655,6 +655,11 @@ class HTTP::Cookie
   end
   include Comparable
 
+  # Hash serialization helper for use back into other libraries (Like Selenium)
+  def to_h
+    PERSISTENT_PROPERTIES.each_with_object({}) { |property, hash| [property.to_sym] => instance_variable_get("@#{property}") }
+  end
+
   # YAML serialization helper for Syck.
   def to_yaml_properties
     PERSISTENT_PROPERTIES.map { |name| "@#{name}" }

test/test_http_cookie.rb

@@ -1168,4 +1168,30 @@ class TestHTTPCookie < Test::Unit::TestCase
     assert_equal true,  HTTP::Cookie.path_match?('/admin', '/admin/')
     assert_equal true,  HTTP::Cookie.path_match?('/admin', '/admin/index')
   end
+
+  def test_to_h_coercion
+    now = Time.now
+    cookie = HTTP::Cookie.new(cookie_values.merge({ expires: now, max_age: 3600, created_at: now, accessed_at: now }))
+
+    cookie.keys.each { |key| assert_equal key.class, Symbol }
+    assert_equal cookie.keys.map(&:to_s), PERSISTENT_PROPERTIES
+
+    expected_hash =
+      {
+        name: 'Foo',
+        value: 'Bar',
+        path: '/',
+        expires: now,
+        for_domain: true,
+        domain: 'rubyforge.org',
+        origin: 'http://rubyforge.org/',
+        secure: true,
+        httponly: true,
+        max_age: 3600,
+        created_at: now,
+        accessed_at: now
+      }
+        
+    assert_equal cookie.to_h, expected_hash
+  end
 end