diff --git a/spec/controllers/products_controller_spec.rb b/spec/controllers/products_controller_spec.rb
new file mode 100644
index 0000000..ff87281
--- /dev/null
+++ b/spec/controllers/products_controller_spec.rb
@@ -0,0 +1,21 @@
+# coding: utf-8
+
+require 'spec_helper'
+
+describe ProductsController do
+  let(:department) { FactoryGirl.create(:department, started_on: Date.new(1999, 1, 1)) }
+  let(:product) { FactoryGirl.create(:product,
+      department_code: department.code, started_on: Date.new(1999, 1, 1)) }
+  
+  before do
+    DurationLimited.current_date = Date.new(2000, 1, 1)
+  end
+  
+  describe "department_product_path" do
+    it "ハッシュでURLパスを作る" do
+      department_product_path(current_date: "2000-01-01",
+        department_id: product.department.code, id: product.code).
+        should == "/2000-01-01/departments/#{product.department.code}/products/#{product.code}"
+    end
+  end
+end