feat(member): stream the overview with keyset infinite scroll instead of loading every member

test/mv_web/member_live/index_bulk_scope_test.exs

@@ -0,0 +1,71 @@
+defmodule MvWeb.MemberLive.IndexBulkScopeTest do
+  @moduledoc """
+  §1.17 — Bulk "all" scope spans the whole filtered set (re-queried from the DB),
+  not only the loaded/visible page, and the count reflects the full filtered
+  total.
+  """
+  use MvWeb.ConnCase, async: false
+
+  import Phoenix.LiveViewTest
+
+  alias Mv.Helpers.SystemActor
+
+  # More than one keyset page so "loaded" and "all matching" differ.
+  @total 60
+
+  defp seed(n) do
+    actor = SystemActor.get_system_actor()
+
+    Enum.each(1..n, fn i ->
+      idx = String.pad_leading(Integer.to_string(i), 3, "0")
+
+      {:ok, _} =
+        Mv.Membership.create_member(
+          %{first_name: "Bulk#{idx}", last_name: "Scope", email: "bulk#{idx}@example.com"},
+          actor: actor
+        )
+    end)
+  end
+
+  defp scope_badge_text(view) do
+    view
+    |> render()
+    |> LazyHTML.from_fragment()
+    |> LazyHTML.query(~s([data-testid="bulk-actions-scope-badge"]))
+    |> LazyHTML.text()
+    |> String.trim()
+  end
+
+  test "select all selects the whole filtered set, not just the loaded page", %{conn: conn} do
+    seed(@total)
+    conn = conn_with_oidc_user(conn)
+    {:ok, view, _html} = live(conn, ~p"/members")
+
+    view |> element("[phx-click='select_all']") |> render_click()
+
+    # The selection count badge reflects all matching members, not the 50 loaded.
+    assert scope_badge_text(view) == "#{@total}"
+  end
+
+  test "copy-emails with no selection copies every matching member's email", %{conn: conn} do
+    seed(@total)
+    conn = conn_with_oidc_user(conn)
+    {:ok, view, _html} = live(conn, ~p"/members")
+
+    result = render_hook(view, "copy_emails", %{})
+
+    # All 60 matching members are copied, not only the 50 loaded rows.
+    assert result =~ "#{@total}"
+  end
+
+  test "select-all then copy copies the whole filtered set", %{conn: conn} do
+    seed(@total)
+    conn = conn_with_oidc_user(conn)
+    {:ok, view, _html} = live(conn, ~p"/members")
+
+    view |> element("[phx-click='select_all']") |> render_click()
+    result = render_hook(view, "copy_emails", %{})
+
+    assert result =~ "#{@total}"
+  end
+end