I’ve been working with Elixir for some time now, not much experienced with Plug/Phoenix internals. Recently I’ve been following “Programming Phoenix” book’s flow for creating “Rumbl” project in it.
I did took some different decision along the way, but they are on same tangent & design pattern… just differ in function definition to make me understand it better.
While writing Integration Tests for Video feature for Authenticated Users; faced an issue and managed to fix it but don’t clearly understand what caused it or fixed.
For example, initially I wrote a test as
+ 1 describe "logged-in user for unauthorized video" do
+ 2 setup %{conn: conn, login_as: username}, do: login(conn, username)
+ 3
+ 4 @tag login_as: "alice"
+ 5 test "does not access other user's video", %{conn: conn, user: user} do
+ 6 user_bob = user_fixture(%{username: "bob"})
+ 7 attrs = Map.put(@create_attrs, :user_id, user_bob.id)
+ 8 video = video_fixture(%{ attrs | title: "Bob" })
+ 9
+ 10 conn = get(conn, Routes.video_path(conn, :index))
+ 11 refute html_response(conn, 200) =~ "Bob"
+ 12
+ 13 assert_error_sent :not_found, fn ->
+ 14 get(conn, Routes.video_path(conn, :show, video))
+ 15 end
+ 16
+ 17 assert_error_sent :not_found, fn ->
+ 18 get(conn, Routes.video_path(conn, :edit, video))
+ 19 end
+ 20
+ 21 assert_error_sent :not_found, fn ->
+ 22 put(conn, Routes.video_path(conn, :update, video, video: @create_attrs))
+ 23 end
+ 24
+ 25 assert_error_sent :not_found, fn ->
+ 26 delete(conn, Routes.video_path(conn, :delete, video))
+ 27 end
+ 28 end
+ 29 end
Which failed for line 13 for redirect 302 happening instead of expected :not_found.
When I change it as following adding a re-login before :show; it passes.
+ 1 describe "logged-in user for unauthorized video" do
+ 2 setup %{conn: conn, login_as: username}, do: login(conn, username)
+ 3
+ 4 @tag login_as: "alice"
+ 5 test "does not access other user's video", %{conn: conn, user: user} do
+ 6 user_bob = user_fixture(%{username: "bob"})
+ 7 attrs = Map.put(@create_attrs, :user_id, user_bob.id)
+ 8 video = video_fixture(%{ attrs | title: "Bob" })
+ 9
+ 10 conn = get(conn, Routes.video_path(conn, :index))
+ 11 refute html_response(conn, 200) =~ "Bob"
+ 12
++ 13 {:ok, conn} = recycle(conn) |> conn_assign(user)
+ 14 assert_error_sent :not_found, fn ->
+ 15 get(conn, Routes.video_path(conn, :show, video))
+ 16 end
+ 17
+ 18 assert_error_sent :not_found, fn ->
+ 19 get(conn, Routes.video_path(conn, :edit, video))
+ 20 end
+ 21
+ 22 assert_error_sent :not_found, fn ->
+ 23 put(conn, Routes.video_path(conn, :update, video, video: @create_attrs))
+ 24 end
+ 25
+ 26 assert_error_sent :not_found, fn ->
+ 27 delete(conn, Routes.video_path(conn, :delete, video))
+ 28 end
+ 29 end
+ 30 end
Could someone please help me understand.
Thanks 
Append.Edit#1
My dependency version are
defp deps do
[
{:phoenix, "~> 1.5.9"},
{:phoenix_ecto, "~> 4.1"},
{:ecto_sql, "~> 3.4"},
{:postgrex, ">= 0.0.0"},
{:phoenix_html, "~> 2.11"},
{:phoenix_live_reload, "~> 1.2", only: :dev},
{:phoenix_live_dashboard, "~> 0.4"},
{:telemetry_metrics, "~> 0.4"},
{:telemetry_poller, "~> 0.4"},
{:gettext, "~> 0.11"},
{:jason, "~> 1.0"},
{:plug_cowboy, "~> 2.0"},
{:pbkdf2_elixir, "~> 1.4"}
]
end
