style intro page, ignore artist tags in Tag.trending, set root page to explore/posts/intro

test/functional/explore/posts_controller_test.rb

@@ -0,0 +1,27 @@
+require "test_helper"
+
+module Explore
+  class PostsControllerTest < ActionController::TestCase
+    context "in all cases" do
+      setup do
+        CurrentUser.user = FactoryGirl.create(:user)
+        CurrentUser.ip_addr = "127.0.0.1"
+        FactoryGirl.create(:post)
+      end
+
+      context "#popular" do
+        should "render" do
+          get :popular
+          assert_response :success
+        end
+      end
+
+      context "#intro" do
+        should "render" do
+          get :intro
+          assert_response :success
+        end
+      end
+    end
+  end
+end