stash_wrapper.rb in stash-wrapper-0.1.10

- old
+ new

@@ -34,9 +34,11 @@
       #   with the current date as start and end.
       # @param inventory [Inventory, nil] the (optional) file inventory
       # @param descriptive_elements [Array<REXML::Element>] the encapsulated
       #   XML metadata
       def initialize(identifier:, version:, license:, embargo: nil, inventory: nil, descriptive_elements:) # rubocop:disable Metrics/ParameterLists
+        fail ArgumentError, "identifier does not appear to be an Identifier object: #{identifier || 'nil'}" unless identifier.is_a?(Identifier)
+
         self.identifier = identifier
         self.stash_administrative = StashAdministrative.new(
           version: version,
           license: license,
           embargo: embargo,