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Testcontainers is an Elixir library that supports ExUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

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testcontainers lib container selenium_container.ex
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lib/container/selenium_container.ex 

# SPDX-License-Identifier: MIT

defmodule Testcontainers.Container.SeleniumContainer do

  @moduledoc """

  Work in progress. Not stable for use yet. Not yet documented for this very reason.

  Can use https://github.com/stuart/elixir-webdriver for client in tests

  """

  alias Testcontainers.ContainerBuilder

  alias Testcontainers.Container

  alias Testcontainers.Container.SeleniumContainer

  alias Testcontainers.WaitStrategy.PortWaitStrategy

  alias Testcontainers.WaitStrategy.LogWaitStrategy



  @default_image "selenium/standalone-chrome"

  @default_tag "118.0"

  @default_image_with_tag "#{@default_image}:#{@default_tag}"

  @default_port1 7900

  @default_port2 4400

  @default_wait_timeout 120_000



  @enforce_keys [:image, :port1, :port2, :wait_timeout]

  defstruct [:image, :port1, :port2, :wait_timeout]



  def new,

    do: %__MODULE__{

      image: @default_image_with_tag,

      wait_timeout: @default_wait_timeout,

      port1: @default_port1,

      port2: @default_port2

    }



  def with_image(%__MODULE__{} = config, image) when is_binary(image) do

    %{config | image: image}

  end



  def with_port1(%__MODULE__{} = config, port1) when is_integer(port1) do

    %{config | port1: port1}

  end



  def with_port2(%__MODULE__{} = config, port2) when is_integer(port2) do

    %{config | port2: port2}

  end



  def with_wait_timeout(%__MODULE__{} = config, wait_timeout) when is_integer(wait_timeout) do

    %{config | wait_timeout: wait_timeout}

  end



  def default_image, do: @default_image



  defimpl ContainerBuilder do

    import Container



    @log_regex ~r/.*(RemoteWebDriver instances should connect to|Selenium Server is up and running|Started Selenium Standalone).*\n/



    @spec build(%SeleniumContainer{}) :: %Container{}

    @impl true

    def build(%SeleniumContainer{} = config) do

      if not String.starts_with?(config.image, SeleniumContainer.default_image()) do

        raise ArgumentError,

          message:

            "Image #{config.image} is not compatible with #{SeleniumContainer.default_image()}"

      end



      new(config.image)

      |> with_exposed_ports([config.port1, config.port2])

      |> with_waiting_strategies([

        LogWaitStrategy.new(@log_regex, config.wait_timeout, 1000),

        PortWaitStrategy.new("127.0.0.1", config.port1, config.wait_timeout, 1000),

        PortWaitStrategy.new("127.0.0.1", config.port2, config.wait_timeout, 1000)

      ])

    end

  end

end