Experimental browser pooling. Reuses browsers across test suites. This limits memory usage and is useful when running feature tests together with regular tests (high ExUnit max_cases concurrency such as the default: 2x number of CPU cores).

Pools are defined up front. Browsers are launched lazily.

Usage:

# test/test_helper.exs
{:ok, _} =
  Supervisor.start_link(
    [
      {PhoenixTest.Playwright.BrowserPool, name: :normal_chromium, size: System.schedulers_online(), browser: :chromium},
      {PhoenixTest.Playwright.BrowserPool, name: :slow_chromium, size: 4, browser: :chromium, slow_mo: 100},
    ],
    strategy: :one_for_one
  )

# configure pool per test module
# test/my_test.exs
defmodule PhoenixTest.PlaywrightBrowserPoolTest do
  use PhoenixTest.Playwright.Case,
    async: true,
    browser_pool: :normal_chromium
end

# or configure globally
# test/test.exs
config :phoenix_test,
  playwright: [
    browser_pool: :normal_chromium,
    browser_pool_checkout_timeout: to_timeout(minute: 10)
  ]