Include ParamsWrapper in AC::API

ParamsWrapper was initially removed from API controllers according to
the following discusision:
https://github.com/rails-api/rails-api/issues/33

However, we're including it again so Rails API devs can decide
whether to enable or disable it.

1 files changed, 26 insertions, 0 deletions

diff --git a/actionpack/test/controller/api/params_wrapper_test.rb b/actionpack/test/controller/api/params_wrapper_test.rb
new file mode 100644
index 0000000000..e40a39d829
--- /dev/null
+++ b/actionpack/test/controller/api/params_wrapper_test.rb
@@ -0,0 +1,26 @@
+require 'abstract_unit'
+
+class ParamsWrapperForApiTest < ActionController::TestCase
+  class UsersController < ActionController::API
+    attr_accessor :last_parameters
+
+    wrap_parameters :person, format: [:json]
+
+    def test
+      self.last_parameters = params.except(:controller, :action)
+      head :ok
+    end
+  end
+
+  class Person; end
+
+  tests UsersController
+
+  def test_specify_wrapper_name
+    @request.env['CONTENT_TYPE'] = 'application/json'
+    post :test, params: { 'username' => 'sikachu' }
+
+    expected = { 'username' => 'sikachu', 'person' => { 'username' => 'sikachu' }}
+    assert_equal expected, @controller.last_parameters
+  end
+end