test/helper.rb in processing-0.5.29 vs test/helper.rb in processing-0.5.30

@@ -27,16 +27,28 @@
     .first
     .bitmap
     .to_a
 end
 
-def graphics(width = 10, height = 10, &block)
-  Processing::Graphics.new(width, height).tap do |g|
+def graphics(width = 10, height = 10, *args, &block)
+  Processing::Graphics.new(width, height, *args).tap do |g|
     g.beginDraw {block.call g, g.getInternal__} if block
   end
 end
 
 def assert_equal_vector(v1, v2, delta = 0.000001)
   assert_in_delta v1.x, v2.x, delta
   assert_in_delta v1.y, v2.y, delta
   assert_in_delta v1.z, v2.z, delta
+end
+
+def assert_equal_pixels(expected, actual, threshold: 1.0)
+  exp_pixels = get_pixels expected
+  act_pixels = get_pixels actual
+  raise "Number of pixels does not match" if act_pixels.size != exp_pixels.size
+
+  equal_count = exp_pixels.zip(act_pixels).count {|a, b| a == b}
+  equal_rate  = equal_count.to_f / act_pixels.size.to_f
+  assert equal_rate >= threshold, <<~EOS
+    The rate of the same pixel #{equal_rate} is below the threshold #{threshold}
+  EOS
 end