ability to track resources used in conference

spec/models/resource_spec.rb

@@ -0,0 +1,15 @@
+require 'spec_helper'
+
+describe Resource do
+  let(:conference) { create(:conference) }
+  let(:resource) { create :resource }
+
+  it 'has a valid factory' do
+    expect(build(:resource)).to be_valid
+  end
+
+  it 'is not valid with used greater than quantity' do
+    resource.used = resource.quantity + 1
+    expect(resource.valid?).to eq false
+  end
+end