feat: add playwright and a11y audit and example test

test/e2e/a11y/a11y_test.exs

@@ -0,0 +1,23 @@
+defmodule MvWeb.A11yTest do
+  use PhoenixTest.Playwright.Case, async: true
+
+  alias PhoenixTest.Playwright.Frame
+
+  test "is accessible", %{conn: conn} do
+    conn = conn_with_oidc_user(conn)
+    conn = Plug.Test.init_test_session(conn, locale: "de")
+    {:ok, _view, html} = live(conn, "/members")
+    conn
+    #|> visit("/members")
+    |> unwrap(&assert_a11y/1)
+  end
+
+  defp assert_a11y(%{frame_id: frame_id}) do
+    Frame.evaluate(frame_id, A11yAudit.JS.axe_core())
+
+    frame_id
+    |> Frame.evaluate("axe.run()")
+    |> A11yAudit.Results.from_json()
+    |> A11yAudit.Assertions.assert_no_violations()
+  end
+end