Add redirect test for 6 quizzes on the book

Author: yasulab

test/integration/so_tech_sha_test.rb

@@ -0,0 +1,15 @@
+require 'test_helper'
+
+class SoTechShaTest < ActionDispatch::IntegrationTest
+  def setup
+    # Quizzes on the book
+    @quizzes = (1..6).to_a
+  end
+
+  test "Quizzes should be redirected" do
+    @quizzes.each do |num|
+      get "/sotechsha/#{num}"
+      assert_redirected_to "/#{num}"
+    end
+  end
+end