WorkbenchImportWorker: Use `File.unlink` instead of `#unlink`

I was getting this error when I removed the `rescue nil`s:

    Failures:

      1) WorkbenchImportWorker foreign lines uploads the following entries: ["OFFRE_TRANSDEV_20170301122517", "OFFRE_TRANSDEV_20170301122519"]
         Failure/Error: eg_file.unlink

         NoMethodError:
           undefined method `unlink' for #<File:0x007fef1adbace8>
         # ./app/workers/workbench_import_worker.rb:81:in `upload_entry_group_stream'
         # ./app/workers/workbench_import_worker.rb:52:in `upload_entry_group'
         # ./app/services/zip_service.rb:61:in `<<'
         # ./app/services/zip_service.rb:61:in `finish_current_output'
         # ./app/services/zip_service.rb:35:in `add_entry'
         # ./app/services/zip_service.rb:27:in `block in _subdirs'
         # .../.gem/ruby/2.3.3/gems/rubyzip-1.2.1/lib/zip/entry_set.rb:38:in `block in each'
         # .../.gem/ruby/2.3.3/gems/rubyzip-1.2.1/lib/zip/entry_set.rb:37:in `each'
         # .../.gem/ruby/2.3.3/gems/rubyzip-1.2.1/lib/zip/entry_set.rb:37:in `each'
         # .../.gem/ruby/2.3.3/gems/rubyzip-1.2.1/lib/zip/central_directory.rb:182:in `each'
         # ./app/services/zip_service.rb:26:in `_subdirs'
         # .../.gem/ruby/2.3.3/gems/rubyzip-1.2.1/lib/zip/file.rb:133:in `open_buffer'
         # ./app/services/zip_service.rb:21:in `block in subdirs'
         # ./app/workers/workbench_import_worker.rb:39:in `each'
         # ./app/workers/workbench_import_worker.rb:39:in `each_with_index'
         # ./app/workers/workbench_import_worker.rb:39:in `upload'
         # ./app/workers/workbench_import_worker.rb:19:in `perform'
         # ./spec/workers/workbench_import_worker_spec.rb:68:in `block (4 levels) in <top (required)>'
         # ./spec/workers/workbench_import_worker_spec.rb:68:in `block (3 levels) in <top (required)>'
         # ./spec/workers/workbench_import_worker_spec.rb:13:in `instance_eval'
         # ./spec/workers/workbench_import_worker_spec.rb:13:in `block in expect_upload_with'
         # .../.gem/ruby/2.3.3/gems/activesupport-4.2.8/lib/active_support/dependencies.rb:268:in `load'
         # .../.gem/ruby/2.3.3/gems/activesupport-4.2.8/lib/active_support/dependencies.rb:268:in `block in load'
         # .../.gem/ruby/2.3.3/gems/activesupport-4.2.8/lib/active_support/dependencies.rb:240:in `load_dependency'
         # .../.gem/ruby/2.3.3/gems/activesupport-4.2.8/lib/active_support/dependencies.rb:268:in `load'
         # .../.gem/ruby/2.3.3/gems/spring-commands-rspec-1.0.4/lib/spring/commands/rspec.rb:18:in `call'
         # -e:1:in `<main>'

Johan said that in his tests on his local machine, the temp files
weren't getting deleted. When I try running the specs, the temp files do
get deleted, so not sure what was going on. Figure it may be because of
the `rescue nil`s, so I decided to remove those in the hopes of always
ensuring we close and unlink the temp files.

The trouble with doing that, however, was that it caused the error and
thus test failures like the example above. I managed to fix the problem
by using `File.unlink` instead of the instance method.

Hopefully this works to ensure that the temp files are always deleted.

Refs #4315

1 files changed, 2 insertions, 2 deletions

diff --git a/app/workers/workbench_import_worker.rb b/app/workers/workbench_import_worker.rb
index 7dae7d7e7..53cbb222a 100644
--- a/app/workers/workbench_import_worker.rb
+++ b/app/workers/workbench_import_worker.rb
@@ -76,8 +76,8 @@ class WorkbenchImportWorker
       raise StopIteration, result.body
     end
   ensure
-    eg_file.close rescue nil
-    eg_file.unlink rescue nil
+    eg_file.close
+    File.unlink(eg_file.path)
   end