ClientStub and improved rspec helpers

lib/telegram/bot/client_stub.rb

@@ -0,0 +1,21 @@
+module Telegram
+  module Bot
+    # Stubbed client for tests. Saves all requests into #requests hash.
+    class ClientStub < Client
+      attr_reader :requests
+
+      def initialize(username = nil)
+        @username = username
+        reset
+      end
+
+      def reset
+        @requests = Hash.new { |h, k| h[k] = [] }
+      end
+
+      def request(action, body)
+        requests[action.to_sym] << body
+      end
+    end
+  end
+end