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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_properties.ex
defmodule Testcontainers.DockerHostFromPropertiesStrategy do
@moduledoc false
@enforce_keys [:key]
defstruct key: nil, filename: "~/.testcontainers.properties"
defimpl Testcontainers.DockerHostStrategy do
alias Testcontainers.DockerUrl
alias Testcontainers.Util.PropertiesParser
def execute(strategy, _input) do
with {:ok, properties} <- PropertiesParser.read_property_file(strategy.filename),
docker_host <- Map.fetch(properties, strategy.key),
do: handle_docker_host(docker_host, strategy.key)
end
defp handle_docker_host({:ok, docker_host}, key) when is_binary(docker_host) do
case DockerUrl.test_docker_host(docker_host) do
:ok ->
{:ok, docker_host}
{:error, reason} ->
{:error,
testcontainer_host_from_properties:
{:ping_failed, key: key, value: docker_host, reason: reason}}
end
end
defp handle_docker_host(:error, key),
do: {:error, testcontainer_host_from_properties: {:property_not_found, key}}
end
end