WorkbenchImportWorker spec: Catch `StopIteration` exception

The code was changed in 038710b22ccf3dd2421ec8d07fae45ef05a47ada, but
the tests weren't changed to reflect this.

In that change, the subdir enumeration is stopped if the `HTTPService`
POST request fails with an error.

This caused us to receive the following error when running the tests:

    2) WorkbenchImportWorker multireferential zipfile with error downloads a zip file, cuts it, and uploads some pieces
       Failure/Error:
         expect { worker.perform import.id }.to raise_error(
           StopIteration,
           post_response_failure.body
         )

         expected StopIteration with {:error=>"What was you thinking"}, got #<StopIteration: {:error=>"What was you thinking"}> with backtrace:
           # ./app/workers/workbench_import_worker.rb:63:in `upload_entry_group'
           # ./app/workers/workbench_import_worker.rb:38:in `each'
           # ./app/workers/workbench_import_worker.rb:38:in `each_with_index'
           # ./app/workers/workbench_import_worker.rb:38:in `upload'
           # ./app/workers/workbench_import_worker.rb:15:in `perform'
           # ./spec/workers/workbench_import_worker_spec.rb:105:in `block (4 levels) in <top (required)>'
           # ./spec/workers/workbench_import_worker_spec.rb:105:in `block (3 levels) in <top (required)>'
           # -e:1:in `<main>'
       # ./spec/workers/workbench_import_worker_spec.rb:105:in `block (3 levels) in <top (required)>'
       # -e:1:in `<main>'

In order to get around this, just catch the error. Hopefully this is
right.

1 files changed, 1 insertions, 1 deletions

diff --git a/spec/workers/workbench_import_worker_spec.rb b/spec/workers/workbench_import_worker_spec.rb
index 14c4239b7..79b9443e0 100644
--- a/spec/workers/workbench_import_worker_spec.rb
+++ b/spec/workers/workbench_import_worker_spec.rb
@@ -102,7 +102,7 @@ RSpec.describe WorkbenchImportWorker, type: [:worker, :request] do
       expect( import ).to receive(:update).with(current_step: 2)
       expect( import ).to receive(:update).with(current_step: 3, status: 'failed')
 
-      worker.perform import.id
+      expect { worker.perform import.id }.to raise_error(StopIteration)
 
     end
   end