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image_derivative_service_spec.rb
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image_derivative_service_spec.rb
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# frozen_string_literal: true
require 'rails_helper'
require 'valkyrie/specs/shared_specs'
include ActionDispatch::TestProcess
RSpec.describe ImageDerivativeService do
it_behaves_like "a Valkyrie::DerivativeService"
let(:thumbnail) { Valkyrie::Vocab::PCDMUse.ThumbnailImage }
let(:derivative_service) do
ImageDerivativeService::Factory.new(change_set_persister: change_set_persister,
use: [thumbnail])
end
let(:adapter) { Valkyrie::MetadataAdapter.find(:indexing_persister) }
let(:storage_adapter) { Valkyrie.config.storage_adapter }
let(:persister) { adapter.persister }
let(:query_service) { adapter.query_service }
let(:file) { fixture_file_upload('files/example.tif', 'image/tiff') }
let(:change_set_persister) { ChangeSetPersister.new(metadata_adapter: adapter, storage_adapter: storage_adapter) }
let(:book) do
change_set_persister.save(change_set: BookChangeSet.new(Book.new, files: [file]))
end
let(:book_members) { query_service.find_members(resource: book) }
let(:valid_resource) { book_members.first }
let(:valid_change_set) { DynamicChangeSetClass.new.new(valid_resource) }
describe '#valid?' do
subject(:valid_file) { derivative_service.new(valid_change_set) }
context 'when given a valid mime_type' do
it { is_expected.to be_valid }
end
context 'when given an invalid mime_type' do
it 'does not validate' do
# rubocop:disable RSpec/SubjectStub
allow(valid_file).to receive(:mime_type).and_return('image/invalid')
# rubocop:enable RSpec/SubjectStub
is_expected.not_to be_valid
end
end
end
it "creates a thumbnail and attaches it to the fileset" do
derivative_service.new(valid_change_set).create_derivatives
reloaded = query_service.find_by(id: valid_resource.id)
members = query_service.find_members(resource: reloaded)
derivative = members.find { |x| x.use.include?(Valkyrie::Vocab::PCDMUse.ServiceFile) }
expect(derivative).to be_present
derivative_file = Valkyrie::StorageAdapter.find_by(id: derivative.file_identifiers.first)
image = MiniMagick::Image.open(derivative_file.disk_path)
expect(image.width).to eq 105
expect(image.height).to eq 150
end
end