specs for services

spec/services/exercise_service/check_external_spec.rb

@@ -0,0 +1,76 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe ExerciseService::CheckExternal do
+  describe '.new' do
+    subject(:export_service) { described_class.new(uuid: uuid, codeharbor_link: codeharbor_link) }
+
+    let(:uuid) { SecureRandom.uuid }
+    let(:codeharbor_link) { FactoryBot.build(:codeharbor_link) }
+
+    it 'assigns uuid' do
+      expect(export_service.instance_variable_get(:@uuid)).to be uuid
+    end
+
+    it 'assigns codeharbor_link' do
+      expect(export_service.instance_variable_get(:@codeharbor_link)).to be codeharbor_link
+    end
+  end
+
+  describe '#execute' do
+    subject(:check_external_service) { described_class.call(uuid: uuid, codeharbor_link: codeharbor_link) }
+
+    let(:uuid) { SecureRandom.uuid }
+    let(:codeharbor_link) { FactoryBot.build(:codeharbor_link) }
+    let(:response) { {}.to_json }
+
+    before { stub_request(:post, codeharbor_link.check_uuid_url).to_return(body: response) }
+
+    it 'calls the correct url' do
+      expect(check_external_service).to have_requested(:post, codeharbor_link.check_uuid_url)
+    end
+
+    it 'submits the correct headers' do
+      expect(check_external_service).to have_requested(:post, codeharbor_link.check_uuid_url)
+        .with(headers: {content_type: 'application/json', authorization: "Bearer #{codeharbor_link.api_key}"})
+    end
+
+    it 'submits the correct body' do
+      expect(check_external_service).to have_requested(:post, codeharbor_link.check_uuid_url)
+        .with(body: {uuid: uuid}.to_json)
+    end
+
+    context 'when response contains a JSON with expected keys' do
+      let(:response) { {message: 'message', exercise_found: true, update_right: true}.to_json }
+
+      it 'returns the correct hash' do
+        expect(check_external_service).to eql(error: false, message: 'message', exercise_found: true, update_right: true)
+      end
+
+      context 'with different values' do
+        let(:response) { {message: 'message', exercise_found: false, update_right: false}.to_json }
+
+        it 'returns the correct hash' do
+          expect(check_external_service).to eql(error: false, message: 'message', exercise_found: false, update_right: false)
+        end
+      end
+    end
+
+    context 'when response does not contain JSON' do
+      let(:response) { 'foo' }
+
+      it 'returns the correct hash' do
+        expect(check_external_service).to eql(error: true, message: I18n.t('exercises.export_codeharbor.error'))
+      end
+    end
+
+    context 'when the request fails' do
+      before { allow(Faraday).to receive(:new).and_raise(Faraday::Error, 'error') }
+
+      it 'returns the correct hash' do
+        expect(check_external_service).to eql(error: true, message: I18n.t('exercises.export_codeharbor.error'))
+      end
+    end
+  end
+end