Ability to use type-castion with telegram-bot-types

spec/telegram/bot/client/typed_response_spec.rb

@@ -0,0 +1,32 @@
+RSpec.describe Telegram::Bot::Client::TypedResponse do
+  let(:bot) { Telegram::Bot::Client.new('token').tap { |x| x.extend described_class } }
+
+  describe '#get_me' do
+    subject { bot.get_me }
+    before { expect(bot).to receive(:request).with(:getMe) { response } }
+    let(:response) { {'ok' => true, 'result' => {'id' => user_id}} }
+    let(:user_id) { 123 }
+    it { should be_instance_of Telegram::Bot::Types::User }
+    its(:id) { should eq user_id }
+
+    context 'on error' do
+      let(:response) { raise Telegram::Bot::Error }
+      it { expect { subject }.to raise_error Telegram::Bot::Error }
+    end
+  end
+
+  describe '#get_updates' do
+    subject { bot.get_updates }
+    before { expect(bot).to receive(:request).with(:getUpdates) { response } }
+    let(:response) { {'ok' => true, 'result' => [{'update_id' => update_id}]} }
+    let(:update_id) { 123 }
+    it { should be_instance_of Array }
+    its(:first) { should be_instance_of Telegram::Bot::Types::Update }
+    its('first.update_id') { should eq update_id }
+
+    context 'on error' do
+      let(:response) { raise Telegram::Bot::Error }
+      it { expect { subject }.to raise_error Telegram::Bot::Error }
+    end
+  end
+end