Refactor conn aliasing in controller tests to use pipe chains

Applied refactor_conn_aliasing.sh to eliminate conn shadowing.

Show draft posts in test and dev

blogex/lib/blogex.ex

@@ -110,6 +110,11 @@ defmodule Blogex do
     * `Blogex.Router` — mountable Plug router
   """
 
+  @doc "Returns true if draft posts should be visible (dev/test environments)."
+  def show_drafts? do
+    Application.get_env(:blogex, :show_drafts, false)
+  end
+
   defdelegate blogs, to: Blogex.Registry
   defdelegate get_blog!(blog_id), to: Blogex.Registry
   defdelegate get_blog(blog_id), to: Blogex.Registry

blogex/lib/blogex/blog.ex

@@ -73,8 +73,14 @@ defmodule Blogex.Blog do
       @doc "Returns the base URL path for this blog."
       def base_path, do: @blog_base_path
 
-      @doc "Returns all published posts, newest first."
-      def all_posts, do: Enum.filter(@posts, & &1.published)
+      @doc "Returns all visible posts, newest first. Drafts are included in dev/test."
+      def all_posts do
+        if Blogex.show_drafts?() do
+          @posts
+        else
+          Enum.filter(@posts, & &1.published)
+        end
+      end
 
       @doc "Returns the N most recent published posts."
       def recent_posts(n \\ 5), do: Enum.take(all_posts(), n)