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# frozen_string_literal: true
require 'rails_helper'
RSpec.describe TranslationService::DeepL do
subject(:service) { described_class.new(plan, 'my-api-key') }
let(:plan) { 'advanced' }
before do
stub_request(:get, 'https://api.deepl.com/v2/languages?type=source').to_return(
body: '[{"language":"EN","name":"English"},{"language":"UK","name":"Ukrainian"}]'
)
stub_request(:get, 'https://api.deepl.com/v2/languages?type=target').to_return(
body: '[{"language":"EN-GB","name":"English (British)"},{"language":"ZH","name":"Chinese"}]'
)
end
describe '#supported?' do
it 'supports included languages as source and target languages' do
expect(service.supported?('uk', 'en')).to be true
end
it 'supports auto-detecting source language' do
expect(service.supported?(nil, 'en')).to be true
end
it 'supports "en" and "pt" as target languages though not included in language list' do
expect(service.supported?('uk', 'en')).to be true
expect(service.supported?('uk', 'pt')).to be true
end
it 'does not support non-included language as target language' do
expect(service.supported?('uk', 'nl')).to be false
end
it 'does not support non-included language as source language' do
expect(service.supported?('da', 'en')).to be false
end
end
describe '#translate' do
it 'returns translation with specified source language' do
stub_request(:post, 'https://api.deepl.com/v2/translate')
.with(body: 'text=Hasta+la+vista&source_lang=ES&target_lang=en&tag_handling=html')
.to_return(body: '{"translations":[{"detected_source_language":"ES","text":"See you soon"}]}')
translation = service.translate('Hasta la vista', 'es', 'en')
expect(translation.detected_source_language).to eq 'es'
expect(translation.provider).to eq 'DeepL.com'
expect(translation.text).to eq 'See you soon'
end
it 'returns translation with auto-detected source language' do
stub_request(:post, 'https://api.deepl.com/v2/translate')
.with(body: 'text=Guten+Tag&source_lang&target_lang=en&tag_handling=html')
.to_return(body: '{"translations":[{"detected_source_language":"DE","text":"Good Morning"}]}')
translation = service.translate('Guten Tag', nil, 'en')
expect(translation.detected_source_language).to eq 'de'
expect(translation.provider).to eq 'DeepL.com'
expect(translation.text).to eq 'Good Morning'
end
end
describe '#languages?' do
it 'returns source languages' do
expect(service.send(:languages, 'source')).to eq ['en', 'uk', nil]
end
it 'returns target languages' do
expect(service.send(:languages, 'target')).to eq %w(en-gb zh en pt)
end
end
describe '#request' do
before do
stub_request(:any, //)
# rubocop:disable Lint/EmptyBlock
service.send(:request, :get, '/v2/languages') { |res| }
# rubocop:enable Lint/EmptyBlock
end
it 'uses paid plan base URL' do
expect(a_request(:get, 'https://api.deepl.com/v2/languages')).to have_been_made.once
end
context 'with free plan' do
let(:plan) { 'free' }
it 'uses free plan base URL' do
expect(a_request(:get, 'https://api-free.deepl.com/v2/languages')).to have_been_made.once
end
end
it 'sends API key' do
expect(a_request(:get, 'https://api.deepl.com/v2/languages').with(headers: { Authorization: 'DeepL-Auth-Key my-api-key' })).to have_been_made.once
end
end
end
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