metacode icon tests

spec/models/metacode_spec.rb

@@ -3,4 +3,21 @@ require 'rails_helper'
 RSpec.describe Metacode, type: :model do
   it { is_expected.to have_many :topics }
   it { is_expected.to have_many :metacode_sets }
+
+  context 'BOTH aws_icon and manual_icon' do
+    let(:icon) { File.open(Rails.root.join('app', 'assets', 'images', 
+                                           'user.png')) }
+    let(:metacode) { build(:metacode, aws_icon: icon,
+                           manual_icon: 'https://metamaps.cc/assets/user.png') }
+    it 'raises a validation error' do
+      expect { metacode.save! }.to raise_error ActiveRecord::RecordInvalid
+    end
+  end
+
+  context 'NEITHER aws_icon or manual_icon' do
+    let(:metacode2) { build(:metacode, aws_icon: nil, manual_icon: nil) }
+    it 'raises a validation error' do
+      expect { metacode2.save! }.to raise_error ActiveRecord::RecordInvalid
+    end
+  end
 end