Introduce support for 3rd-party auth (OAuth2 & LDAP)

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

test/web/controllers/auth_controller_test.exs

@@ -0,0 +1,54 @@
+defmodule Mobilizon.Web.AuthControllerTest do
+  use Mobilizon.Web.ConnCase
+  alias Mobilizon.Service.Auth.Authenticator
+  alias Mobilizon.Users.User
+
+  @email "someone@somewhere.tld"
+
+  test "login and registration",
+       %{conn: conn} do
+    conn =
+      conn
+      |> assign(:ueberauth_auth, %Ueberauth.Auth{
+        strategy: Ueberauth.Strategy.Twitter,
+        extra: %Ueberauth.Auth.Extra{raw_info: %{user: %{"email" => @email}}}
+      })
+      |> get("/auth/twitter/callback")
+
+    assert html_response(conn, 200) =~ "auth-access-token"
+
+    assert %User{confirmed_at: confirmed_at, email: @email} = Authenticator.fetch_user(@email)
+
+    refute is_nil(confirmed_at)
+  end
+
+  test "on bad provider error", %{
+    conn: conn
+  } do
+    conn =
+      conn
+      |> assign(:ueberauth_failure, %{errors: [%{message: "Some error"}]})
+      |> get("/auth/nothing")
+
+    assert "/login?code=Login Provider not found&provider=nothing" =
+             redirection = redirected_to(conn, 302)
+
+    conn = get(recycle(conn), redirection)
+    assert html_response(conn, 200)
+  end
+
+  test "on authentication error", %{
+    conn: conn
+  } do
+    conn =
+      conn
+      |> assign(:ueberauth_failure, %{errors: [%{message: "Some error"}]})
+      |> get("/auth/twitter/callback")
+
+    assert "/login?code=Error with Login Provider&provider=twitter" =
+             redirection = redirected_to(conn, 302)
+
+    conn = get(recycle(conn), redirection)
+    assert html_response(conn, 200)
+  end
+end