Fix ImageModel missing :data option key

lib/caracal/core/models/iframe_model.rb

@@ -4,7 +4,7 @@ module Caracal
   module Core
     module Models
 
-      # This class handles block options passed to the img method.
+      # This class handles block options passed to the iframe method.
       #
       class IFrameModel < BaseModel
 

lib/caracal/core/models/image_model.rb

@@ -115,7 +115,7 @@ def valid?
         private
 
         def option_keys
-          [:url, :width, :height, :align, :top, :bottom, :left, :right]
+          [:url, :data, :width, :height, :align, :top, :bottom, :left, :right]
         end
 
         def pixels_to_emus(value, ppi)

spec/lib/caracal/core/images_spec.rb

@@ -13,11 +13,24 @@
     # .img
     describe '.img' do
       let!(:size) { subject.contents.size }
-
-      before { subject.img 'https://www.google.com/images/srpr/logo11w.png', width: 538, height: 190 }
-
-      it { expect(subject.contents.size).to eq size + 1 }
-      it { expect(subject.contents.last).to be_a(Caracal::Core::Models::ImageModel) }
+      let!(:url) { 'https://www.google.com/images/srpr/logo11w.png' }
+
+      describe 'when no data provided' do
+        before { subject.img url, width: 538, height: 190 }
+
+        it { expect(subject.contents.size).to eq size + 1 }
+        it { expect(subject.contents.last).to be_a(Caracal::Core::Models::ImageModel) }
+      end
+
+      describe 'when data provided as binary' do
+        let!(:binary_data) { open(url).read }
+
+        before { subject.img url, data: binary_data, width: 538, height: 190 }
+
+        it { expect(subject.contents.size).to eq size + 1 }
+        it { expect(subject.contents.last).to be_a(Caracal::Core::Models::ImageModel) }
+        it { expect(subject.contents.last.image_data).to eq binary_data }
+      end
     end
 
   end