1 files changed, 26 insertions, 0 deletions
diff --git a/actionpack/test/controller/parameters/parameters_permit_test.rb b/actionpack/test/controller/parameters/parameters_permit_test.rb
index 2616b040d1..12555c3136 100644
--- a/actionpack/test/controller/parameters/parameters_permit_test.rb
+++ b/actionpack/test/controller/parameters/parameters_permit_test.rb
@@ -403,6 +403,32 @@ class ParametersPermitTest < ActiveSupport::TestCase
     end
   end
 
+  test "to_hash raises UnfilteredParameters on unfiltered params" do
+    assert_raises(ActionController::UnfilteredParameters) do
+      @params.to_hash
+    end
+  end
+
+  test "to_hash returns converted hash on permitted params" do
+    @params.permit!
+
+    assert_instance_of Hash, @params.to_hash
+    assert_not_kind_of ActionController::Parameters, @params.to_hash
+  end
+
+  test "to_hash returns converted hash when .permit_all_parameters is set" do
+    begin
+      ActionController::Parameters.permit_all_parameters = true
+      params = ActionController::Parameters.new(crab: "Senjougahara Hitagi")
+
+      assert_instance_of Hash, params.to_hash
+      assert_not_kind_of ActionController::Parameters, params.to_hash
+      assert_equal({ "crab" => "Senjougahara Hitagi" }, params.to_hash)
+      assert_equal({ "crab" => "Senjougahara Hitagi" }, params)
+    ensure
+      ActionController::Parameters.permit_all_parameters = false
+    end
+  end
 
   test "to_unsafe_h returns unfiltered params" do
     assert @params.to_unsafe_h.is_a? ActiveSupport::HashWithIndifferentAccess