require 'rails_helper' describe UploaderHelper do let(:uploader) do example_uploader = Class.new(CarrierWave::Uploader::Base) do include UploaderHelper storage :file end example_uploader.new end def upload_fixture(filename) fixture_file_upload(File.join('spec', 'fixtures', filename)) end describe '#image_or_video?' do it 'returns true for an image file' do uploader.store!(upload_fixture('dk.png')) expect(uploader).to be_image_or_video end it 'it returns true for a video file' do uploader.store!(upload_fixture('video_sample.mp4')) expect(uploader).to be_image_or_video end it 'returns false for other extensions' do uploader.store!(upload_fixture('doc_sample.txt')) expect(uploader).not_to be_image_or_video end end end