Add intensify tests

spec/intensify_spec.rb

@@ -0,0 +1,32 @@
+require 'spec_helper'
+
+RSpec.describe Teaas::Intensify do
+  describe "#intensify" do
+    it "generates a intensified image" do
+      static_image = Magick::ImageList.new
+
+      static_image.from_blob(Base64.decode64("iVBORw0KGgoAAAANSUhEUgAAACAAAAAgAQAAAABbAUdZAAAABGdBTUEAALGP\nC/xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3Cc\nulE8AAAAAmJLR0QAAd2KE6QAAAAJcEhZcwAACxMAAAsTAQCanBgAAAAHdElN\nRQfgAgUQIQbuVAHWAAAAD0lEQVQI12P4DwQMg5cAANrpf4GXVFCUAAAAJXRF\nWHRkYXRlOmNyZWF0ZQAyMDE2LTAyLTA1VDE2OjMzOjA2LTA2OjAw2bi0+gAA\nACV0RVh0ZGF0ZTptb2RpZnkAMjAxNi0wMi0wNVQxNjozMzowNi0wNjowMKjl\nDEYAAAAASUVORK5CYII=\n"))
+
+      flattened_static_image = static_image.flatten_images
+      intensified_image = double()
+
+      expect(Magick::ImageList).to receive(:new).and_return(intensified_image).twice
+
+      expect(static_image).to receive(:[]).and_return(flattened_static_image)
+
+      expect(intensified_image).to receive(:<<).exactly(7).times
+
+      Teaas::Intensify.intensify(static_image)
+    end
+  end
+
+  describe("#intensify_from_file") do
+    it "calls intensify with image" do
+      image = Magick::Image.new(32, 32)
+      expect(Magick::Image).to receive(:read).and_return(image)
+
+      expect(Teaas::Intensify).to receive(:intensify).with(image)
+      Teaas::Intensify.intensify_from_file("hello.png")
+    end
+  end
+end

spec/spec_helper.rb

@@ -1,6 +1,7 @@
 require 'base64'
 require 'rmagick'
 require_relative '../lib/teaas/helper'
+require_relative '../lib/teaas/intensify'
 require_relative '../lib/teaas/marquee'
 require_relative '../lib/teaas/spin'
 require_relative '../lib/teaas/turboize'