class Shoulda::Matchers::ActiveRecord::DefineEnumForMatcher

def actual_default_value
  attribute_schema = if model.respond_to?(:_default_attributes)
                       model._default_attributes[attribute_name.to_s]
                     else
                       model.attributes_to_define_after_schema_loads[attribute_name.to_s]
                     end
  if Kernel.const_defined?('ActiveModel::Attribute::UserProvidedDefault') &&
     attribute_schema.is_a?(::ActiveModel::Attribute::UserProvidedDefault)
    attribute_schema = attribute_schema.marshal_dump
  end
  value = case attribute_schema
          in [_, { default: default_value } ]
            default_value
          in [_, default_value, *]
            default_value
          in [_, default_value]
            default_value
          end
  value.respond_to?(:call) ? value.call : value
end