Video#tags should return [] if video has no tags

CHANGELOG.md

@@ -6,6 +6,11 @@ For more information about changelogs, check
 [Keep a Changelog](http://keepachangelog.com) and
 [Vandamme](http://tech-angels.github.io/vandamme).
 
+## 0.1.1 - 2017-04-04
+
+* [ENHANCEMENT] Add :defaults to `has_attribute`
+* [BUGFIX] Video#tags returns `[]` and not `nil` when a video has no tags
+
 ## 0.1.0 - 2017-04-03
 
 * [FEATURE] Extracted first classes from Yt

lib/yt/core/version.rb

@@ -3,6 +3,6 @@ module Yt
   module Core
     # @return [String] the SemVer-compatible gem version.
     # @see http://semver.org
-    VERSION = '0.1.0'
+    VERSION = '0.1.1'
   end
 end

lib/yt/resource.rb

@@ -52,7 +52,7 @@ def self.has_attribute(name, options = {}, &block)
         part = keys.shift
         value = @data[part] || fetch_part(part)
         keys.each{|key| value = value[camelize key]}
-        value = type_cast value, options[:type]
+        value = type_cast (value || options[:default]), options[:type]
         block_given? ? instance_exec(value, &block) : value
       end
     end

lib/yt/video.rb

@@ -34,7 +34,7 @@ class Video < Resource
 
     # @!attribute [r] tags
     # @return [Array<String>] the list of tags associated with the video.
-    has_attribute :tags, in: :snippet
+    has_attribute :tags, in: :snippet, default: []
 
     # @!attribute [r] category_id
     # @return [Integer] the ID of the associated YouTube video category.