api21_icon.rb in headdesk-0.9.0

- old
+ new

@@ -1,7 +1,9 @@
 # frozen_string_literal: true
 
+require 'oily_png'
+
 module Headdesk
   module Checks
     module Teak
       #
       # Check to make sure that an APK, which uses Teak, has an API 21+ icon.
@@ -22,13 +24,24 @@
                         .values(v: 21)
                         .drawable.io_teak_small_notification_icon
           export icon: icon, icon_v21: icon_v21
 
           describe "APK contains a drawable for 'io_teak_small_notification_icon'"
-          fail_check unless: -> { icon && icon_v21 }
+          fail_check if: -> { icon.nil? || icon_v21.nil? }
 
           describe "'io_teak_small_notification_icon' for v21 is different from < v21"
           fail_check unless: -> { icon != icon_v21 }
+
+          resolutions = [['drawable-mdpi', 24], ['drawable-hdpi', 36], ['drawable-xhdpi', 48],
+                         ['drawable-xxhdpi', 72], ['drawable-xxxhdpi', 96]]
+          resolutions.each do |rname, size|
+            resource_file = icon_v21.sub('@drawable', "res/#{rname}") + '.png'
+            fail_check unless: -> { apk.resources.file?(resource_file) }
+
+            describe "'#{resource_file}' is #{size}x#{size}"
+            image = ChunkyPNG::Image.from_file(apk.resources.path_for(resource_file))
+            fail_check unless: -> { size == image.width && size == image.height }
+          end
         end
       end
     end
   end
 end