post tooltips: add system tests.

test/system/post_tooltip_test.rb

@@ -0,0 +1,30 @@
+require "application_system_test_case"
+
+class PostTooltipTest < ApplicationSystemTestCase
+  context "Post tooltips" do
+    setup do
+      @post = create(:post, file_ext: "swf")
+      puts @post.preview_file_url
+    end
+
+    context "on a post thumbnail" do
+      should "show the tooltip when hovering over the thumbnail" do
+        visit posts_path
+
+        find(".post-preview img").hover
+        assert_selector ".post-tooltip"
+      end
+    end
+
+    context "on a post #xxx link" do
+      should "show the tooltip when hovering over the link" do
+        user = create(:user, created_at: 1.month.ago)
+        comment = as(user) { create(:comment, post: @post, body: "post ##{@post.id}") }
+
+        visit comment_path(comment)
+        find(".dtext-post-id-link").hover
+        assert_selector ".post-tooltip"
+      end
+    end
+  end
+end