✅ Add test for file set indexer logic

This commit will add a simple test for the FileSetIndexer logic to check
that the text extraction from a born digital pdf works as expected.

spec/indexers/hyku/indexers/file_set_indexer_spec.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+RSpec.describe Hyku::Indexers::FileSetIndexer do
+ let(:indexer_class) { described_class }
+ let(:resource) { Hyrax.config.file_set_model.constantize.new }
+ let(:original_file) { Hyrax::FileMetadata.new }
+
+ it 'is the configured file set indexer' do
+ expect(Hyrax.config.file_set_indexer).to eq described_class
+ end
+
+ describe '#to_solr' do
+ let(:stream) { File.open('spec/fixtures/pdf/pdf_sample.pdf').read }
+ it 'indexes the text of a pdf that has text already' do
+ allow(Flipflop).to receive(:default_pdf_viewer?).and_return(true)
+ allow(resource).to receive(:original_file).and_return(original_file)
+ allow(original_file).to receive(:pdf?).and_return(true)
+ allow(original_file).to receive(:content).and_return(stream)
+
+ expect(resource.to_solr['all_text_tsimv']).to include('Dummy PDF file')
+ end
+ end
+end