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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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lib/connection/docker_host_strategy/docker_host_from_env.ex
# SPDX-License-Identifier: MIT
defmodule Testcontainers.DockerHostFromEnvStrategy do
@moduledoc false
defstruct key: "DOCKER_HOST"
alias Testcontainers.DockerUrl
defimpl Testcontainers.DockerHostStrategy do
def execute(strategy, _input) do
with {:ok, docker_host} <- get_docker_host(strategy) do
case docker_host |> DockerUrl.test_docker_host() do
:ok ->
{:ok, docker_host}
{:error, reason} ->
{:error,
docker_host_from_env:
{:ping_failed, key: strategy.key, value: docker_host, reason: reason}}
end
end
end
defp get_docker_host(strategy) do
case System.get_env(strategy.key) do
nil ->
{:error, docker_host_from_env: {:docker_host_not_found, strategy.key}}
"" ->
{:error, docker_host_from_env: {:docker_host_empty, strategy.key}}
docker_host when is_binary(docker_host) ->
{:ok, docker_host}
end
end
end
end