Add URI decoding for route segments and test unicode path handling (#6559)

Author: peguimasid

lib/phoenix/verified_routes.ex

@@ -329,6 +329,7 @@ defmodule Phoenix.VerifiedRoutes do
     |> Enum.at(0)
     |> String.split("/")
     |> Enum.filter(fn segment -> segment != "" end)
+    |> Enum.map(&URI.decode/1)
   end
 
   defp expand_alias({:__aliases__, _, _} = alias, env),

test/phoenix/verified_routes_test.exs

@@ -56,6 +56,7 @@ defmodule Phoenix.VerifiedRoutesTest do
     get "/posts/file/*file", PostController, :file
     get "/posts/skip", PostController, :skip
     get "/should-warn/*all", PostController, :all, warn_on_verify: true
+    get "/ø", PostController, :unicode
 
     scope "/", host: "users." do
       post "/host_users/:id/info", UserController, :create
@@ -434,6 +435,10 @@ defmodule Phoenix.VerifiedRoutesTest do
     assert ~p"/posts/5/?#{%{"id" => "foo bar"}}" == "/posts/5/?id=foo+bar"
   end
 
+  test "~p with unicode characters" do
+    assert ~p"/ø" == "/%C3%B8"
+  end
+
   describe "with static path" do
     @endpoint StaticPath
     @router Router