Deprecate use Plug.Test (#1252)

Author: mohammedzeglam-pg

README.md

@@ -284,8 +284,9 @@ Plug ships with a `Plug.Test` module that makes testing your plugs easy. Here is
 ```elixir
 defmodule MyPlugTest do
   use ExUnit.Case, async: true
-  use Plug.Test
-
+  import Plug.Test
+  import Plug.Conn
+  
   @opts MyRouter.init([])
 
   test "returns hello world" do

lib/plug/test.ex

@@ -5,7 +5,8 @@ defmodule Plug.Test do
   This module can be used in your test cases, like this:
 
       use ExUnit.Case, async: true
-      use Plug.Test
+      import Plug.Test
+      import Plug.Conn
 
   Using this module will:
 
@@ -22,6 +23,9 @@ defmodule Plug.Test do
   """
 
   @doc false
+  @deprecated """
+  Please use `import Plug.Test` and `import Plug.Conn` directly instead.
+  """
   defmacro __using__(_) do
     quote do
       import Plug.Test

test/plug/basic_auth_test.exs

@@ -1,6 +1,7 @@
 defmodule Plug.BasicAuthTest do
   use ExUnit.Case, async: true
-  use Plug.Test
+  import Plug.Test
+  import Plug.Conn
 
   import Plug.BasicAuth
 

test/plug/builder_test.exs

@@ -82,7 +82,8 @@ defmodule Plug.BuilderTest do
   end
 
   use ExUnit.Case, async: true
-  use Plug.Test
+  import Plug.Test
+  import Plug.Conn
 
   test "exports the init/1 function" do
     assert Sample.init(:ok) == :ok

test/plug/conn/wrapper_error_test.exs

@@ -1,6 +1,6 @@
 defmodule Plug.Conn.WrapperErrorTest do
   use ExUnit.Case, async: true
-  use Plug.Test
+  import Plug.Test
 
   test "reraise/3" do
     conn = conn(:get, "/")

test/plug/conn_test.exs

@@ -1,6 +1,7 @@
 defmodule Plug.ConnTest do
   use ExUnit.Case, async: true
-  use Plug.Test
+  import Plug.Test
+  import Plug.Conn
 
   alias Plug.Conn
   alias Plug.ProcessStore

test/plug/csrf_protection_test.exs

@@ -1,6 +1,7 @@
 defmodule Plug.CSRFProtectionTest do
   use ExUnit.Case, async: true
-  use Plug.Test
+  import Plug.Test
+  import Plug.Conn
 
   alias Plug.CSRFProtection
   alias Plug.CSRFProtection.InvalidCSRFTokenError

test/plug/debugger_test.exs

@@ -1,6 +1,7 @@
 defmodule Plug.DebuggerTest do
   use ExUnit.Case, async: true
-  use Plug.Test
+  import Plug.Test
+  import Plug.Conn
 
   import ExUnit.CaptureLog
 

test/plug/error_handler_test.exs

@@ -1,6 +1,7 @@
 defmodule Plug.ErrorHandlerTest do
   use ExUnit.Case, async: true
-  use Plug.Test
+  import Plug.Test
+  import Plug.Conn
 
   defmodule ForbiddenError do
     defexception plug_status: 403, message: "oops"

test/plug/head_test.exs

@@ -1,6 +1,7 @@
 defmodule Plug.HeadTest do
   use ExUnit.Case, async: true
-  use Plug.Test
+  import Plug.Test
+  import Plug.Conn
 
   @opts Plug.Head.init([])