1 files changed, 30 insertions, 0 deletions
diff --git a/actionpack/test/controller/required_params_test.rb b/actionpack/test/controller/required_params_test.rb
new file mode 100644
index 0000000000..661bcb3945
--- /dev/null
+++ b/actionpack/test/controller/required_params_test.rb
@@ -0,0 +1,30 @@
+require 'abstract_unit'
+
+class BooksController < ActionController::Base
+  def create
+    params.require(:book).require(:name)
+    head :ok
+  end
+end
+
+class ActionControllerRequiredParamsTest < ActionController::TestCase
+  tests BooksController
+
+  test "missing required parameters will raise exception" do
+    post :create, { magazine: { name: "Mjallo!" } }
+    assert_response :bad_request
+
+    post :create, { book: { title: "Mjallo!" } }
+    assert_response :bad_request
+  end
+
+  test "required parameters that are present will not raise" do
+    post :create, { book: { name: "Mjallo!" } }
+    assert_response :ok
+  end
+
+  test "missing parameters will be mentioned in the return" do
+    post :create, { magazine: { name: "Mjallo!" } }
+    assert_equal "Required parameter missing: book", response.body
+  end
+end