sure/test/controllers/settings/preferences_controller_test.rb

require "test_helper"

class Settings::PreferencesControllerTest < ActionDispatch::IntegrationTest
  setup do
    sign_in users(:family_admin)
  end

  test "get" do
    get settings_preferences_url

    assert_response :success
  end

  test "group moniker uses group currencies copy and hides legacy currency field" do
    users(:family_admin).family.update!(moniker: "Group")

    get settings_preferences_url

    assert_response :success
    assert_includes response.body, "Group Currencies"
    assert_includes response.body, "your group"
    assert_select "select[name='user[family_attributes][currency]']", count: 0
  end

  test "renders preview features toggle for non-admin users too" do
    sign_in users(:family_member)
    get settings_preferences_url

    assert_response :success
    assert_includes response.body, "Enable preview features"
  end

  test "update toggles preview_features_enabled on" do
    user = users(:family_admin)
    assert_not user.preview_features_enabled?

    patch settings_preferences_url, params: { user: { preview_features_enabled: "1" } }

    assert_redirected_to settings_preferences_url
    assert user.reload.preview_features_enabled?
  end

  test "update toggles preview_features_enabled off" do
    user = users(:family_admin)
    user.update!(preferences: (user.preferences || {}).merge("preview_features_enabled" => true))
    assert user.preview_features_enabled?

    patch settings_preferences_url, params: { user: { preview_features_enabled: "0" } }

    assert_redirected_to settings_preferences_url
    assert_not user.reload.preview_features_enabled?
  end
end