Custom options are accessible in serializer (via :context)

test/unit/active_model/serializer/options_test.rb

@@ -0,0 +1,15 @@
+require 'test_helper'
+
+module ActiveModel
+  class Serializer
+    class OptionsTest < Minitest::Test
+      def setup
+        @serializer = ProfileSerializer.new(nil, context: {foo: :bar})
+      end
+
+      def test_custom_options_are_accessible_from_serializer
+        assert_equal({foo: :bar}, @serializer.context)
+      end
+    end
+  end
+end