silverdr

silverdr

Testing conn helpers in isolation?

Let’s say I have a helper function called not_found/1, which looks something like:

def not_found(conn) do
	conn
	|> put_status(404)
	|> put_view(MyApplication.ErrorView)
	|> render(:"404")
	|> halt()
end

This is a very trivial example to show the idea. Now I wonder how to test such things in isolation? Like how would setup / assertions need to look like.

Marked As Solved

LostKobrakai

LostKobrakai

Yeah, that was a “typo” on my part.

build_conn gives you a “bare” conn. Your plug requires a format to be available on the conn (when using render with an atom), so you need to set a format on the conn as well: conn = put_format(conn, "html"). Usually this is set by the Phoenix.Controller.accepts/2 plug in your router pipeline.

Also Liked

LostKobrakai

LostKobrakai

Something akin to that should work in a normal phoenix MyAppWeb.ConnCase module:

    test "no header" do
      conn = build_conn(:get, "/")

      conn = call_plug(conn, [])

      assert conn.status == 403
      assert conn.state == :sent
      assert conn.halted
    end

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silverdr

silverdr

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