dawarich/spec/services/secure_file_downloader_spec.rb
2025-04-23 22:46:39 +02:00

99 lines
3.3 KiB
Ruby

# frozen_string_literal: true
require 'rails_helper'
RSpec.describe SecureFileDownloader do
let(:file_content) { 'test content' }
let(:file_size) { file_content.bytesize }
let(:checksum) { Base64.strict_encode64(Digest::MD5.digest(file_content)) }
let(:blob) { double('ActiveStorage::Blob', byte_size: file_size, checksum: checksum) }
# Create a mock that mimics ActiveStorage::Attached::One
let(:storage_attachment) { double('ActiveStorage::Attached::One', blob: blob) }
subject { described_class.new(storage_attachment) }
describe '#download_with_verification' do
context 'when download is successful' do
before do
# Mock the download method to yield the file content
allow(storage_attachment).to receive(:download) do |&block|
block.call(file_content)
end
end
it 'returns the file content' do
expect(subject.download_with_verification).to eq(file_content)
end
end
context 'when timeout occurs but succeeds on retry' do
before do
call_count = 0
allow(storage_attachment).to receive(:download) do |&block|
call_count += 1
raise Timeout::Error if call_count == 1
block.call(file_content)
end
end
it 'retries the download and returns the file content' do
expect(Rails.logger).to receive(:warn).with(/Download timeout, attempt 1 of/)
expect(subject.download_with_verification).to eq(file_content)
end
end
context 'when all download attempts timeout' do
before do
allow(storage_attachment).to receive(:download).and_raise(Timeout::Error)
end
it 'raises an error after max retries' do
described_class::MAX_RETRIES.times do |i|
expect(Rails.logger).to receive(:warn).with(/Download timeout, attempt #{i + 1} of/)
end
expect(Rails.logger).to receive(:error).with(/Download failed after/)
expect { subject.download_with_verification }.to raise_error(Timeout::Error)
end
end
context 'when file size does not match' do
let(:blob) { double('ActiveStorage::Blob', byte_size: 100, checksum: checksum) }
before do
allow(storage_attachment).to receive(:download) do |&block|
block.call(file_content)
end
end
it 'raises an error' do
expect { subject.download_with_verification }.to raise_error(/Incomplete download/)
end
end
context 'when checksum does not match' do
let(:blob) { double('ActiveStorage::Blob', byte_size: file_size, checksum: 'invalid_checksum') }
before do
allow(storage_attachment).to receive(:download) do |&block|
block.call(file_content)
end
end
it 'raises an error' do
expect { subject.download_with_verification }.to raise_error(/Checksum mismatch/)
end
end
context 'when download fails with a different error' do
before do
allow(storage_attachment).to receive(:download).and_raise(StandardError, 'Download failed')
end
it 'logs the error and re-raises it' do
expect(Rails.logger).to receive(:error).with(/Download error: Download failed/)
expect { subject.download_with_verification }.to raise_error(StandardError, 'Download failed')
end
end
end
end