Add the configuration for wallaby.

config/test.exs

@@ -21,7 +21,7 @@ config :link_shortener, LinkShortener.Repo,
 config :link_shortener, LinkShortenerWeb.Endpoint,
   http: [ip: {127, 0, 0, 1}, port: 4002],
   secret_key_base: System.get_env("SECRET_KEY_BASE"),
-  server: false
+  server: true
 
 # In test we don't send emails
 config :link_shortener, LinkShortener.Mailer, adapter: Swoosh.Adapters.Test
@@ -38,3 +38,10 @@ config :phoenix, :plug_init_mode, :runtime
 # Enable helpful, but potentially expensive runtime checks
 config :phoenix_live_view,
   enable_expensive_runtime_checks: true
+
+config :wallaby,
+  otp_app: :link_shortener,
+  screenshot_on_failure: true,
+  screenshot_dir: "screenshots",
+  driver: Wallaby.Selenium
+