1 files changed, 125 insertions, 0 deletions
diff --git a/actionpack/test/controller/parameters/accessors_test.rb b/actionpack/test/controller/parameters/accessors_test.rb
new file mode 100644
index 0000000000..97875c3cbb
--- /dev/null
+++ b/actionpack/test/controller/parameters/accessors_test.rb
@@ -0,0 +1,125 @@
+require 'abstract_unit'
+require 'action_controller/metal/strong_parameters'
+require 'active_support/core_ext/hash/transform_values'
+
+class ParametersAccessorsTest < ActiveSupport::TestCase
+  setup do
+    @params = ActionController::Parameters.new(
+      person: {
+        age: '32',
+        name: {
+          first: 'David',
+          last: 'Heinemeier Hansson'
+        },
+        addresses: [{city: 'Chicago', state: 'Illinois'}]
+      }
+    )
+  end
+
+  test "[] retains permitted status" do
+    @params.permit!
+    assert @params[:person].permitted?
+    assert @params[:person][:name].permitted?
+  end
+
+  test "[] retains unpermitted status" do
+    assert_not @params[:person].permitted?
+    assert_not @params[:person][:name].permitted?
+  end
+
+  test "each carries permitted status" do
+    @params.permit!
+    @params.each { |key, value| assert(value.permitted?) if key == "person" }
+  end
+
+  test "each carries unpermitted status" do
+    @params.each { |key, value| assert_not(value.permitted?) if key == "person" }
+  end
+
+  test "each_pair carries permitted status" do
+    @params.permit!
+    @params.each_pair { |key, value| assert(value.permitted?) if key == "person" }
+  end
+
+  test "each_pair carries unpermitted status" do
+    @params.each_pair { |key, value| assert_not(value.permitted?) if key == "person" }
+  end
+
+  test "except retains permitted status" do
+    @params.permit!
+    assert @params.except(:person).permitted?
+    assert @params[:person].except(:name).permitted?
+  end
+
+  test "except retains unpermitted status" do
+    assert_not @params.except(:person).permitted?
+    assert_not @params[:person].except(:name).permitted?
+  end
+
+  test "fetch retains permitted status" do
+    @params.permit!
+    assert @params.fetch(:person).permitted?
+    assert @params[:person].fetch(:name).permitted?
+  end
+
+  test "fetch retains unpermitted status" do
+    assert_not @params.fetch(:person).permitted?
+    assert_not @params[:person].fetch(:name).permitted?
+  end
+
+  test "reject retains permitted status" do
+    assert_not @params.reject { |k| k == "person" }.permitted?
+  end
+
+  test "reject retains unpermitted status" do
+    @params.permit!
+    assert @params.reject { |k| k == "person" }.permitted?
+  end
+
+  test "select retains permitted status" do
+    @params.permit!
+    assert @params.select { |k| k == "person" }.permitted?
+  end
+
+  test "select retains unpermitted status" do
+    assert_not @params.select { |k| k == "person" }.permitted?
+  end
+
+  test "slice retains permitted status" do
+    @params.permit!
+    assert @params.slice(:person).permitted?
+  end
+
+  test "slice retains unpermitted status" do
+    assert_not @params.slice(:person).permitted?
+  end
+
+  test "transform_keys retains permitted status" do
+    @params.permit!
+    assert @params.transform_keys { |k| k }.permitted?
+  end
+
+  test "transform_keys retains unpermitted status" do
+    assert_not @params.transform_keys { |k| k }.permitted?
+  end
+
+  test "transform_values retains permitted status" do
+    @params.permit!
+    assert @params.transform_values { |v| v }.permitted?
+  end
+
+  test "transform_values retains unpermitted status" do
+    assert_not @params.transform_values { |v| v }.permitted?
+  end
+
+  test "values_at retains permitted status" do
+    @params.permit!
+    assert @params.values_at(:person).first.permitted?
+    assert @params[:person].values_at(:name).first.permitted?
+  end
+
+  test "values_at retains unpermitted status" do
+    assert_not @params.values_at(:person).first.permitted?
+    assert_not @params[:person].values_at(:name).first.permitted?
+  end
+end