I recently wrapped an Elixir app with a plug_cowboy endpoint. Everything is working fine, but when I do:
mix test
just the tests that I have defined in the plug_cowboy app are executed. I don’t get any errors, but the doctests that I have in the “pure” Elixir app are ignored.
It’s not a big deal as they still show in the documentation, but ideally I don’t want to repeat them at the plug_cowboy layer. Is there an easy way to get them executed by mix?
Just in case, my directory structure looks like this now:
cowboy_app_dir
lib
application.ex
endpoint.ex
pure_elixir_app_dir
pure_elixir_app_logic.ex - Doctests here are being ignored by mix
cowboy_app_test_dir
cowboy_app_test.exs - All tests here being run by mix
Actually, I don’t have two apps defined in my mix.exs. I just changed the original Elixir app to be a module of the plug_cowboy endpoint. Perhaps that’s the issue? Will the doctests be executed if I defined two separate apps?
A single mix.exs file builds a single elixir application. If you want to have multiple applications within a single project you can use a mix umbrella project. Can you show your mix.exs file?
When I do development like that I usually just run each of the apps tests individually. You could also write a small bash script that would run each test suite (or a makefile)
Having two distinct applications a la PragDave has its advantages, but for the moment, I think I like the idea of the umbrella app. This is my current mix.exs
defmodule Estimator.MixProject do
use Mix.Project
def project do
[
app: :estimator,
version: "0.1.0",
elixir: "~> 1.8",
start_permanent: Mix.env() == :prod,
deps: deps()
]
end
# Run "mix help compile.app" to learn about applications.
def application do
[
extra_applications: [:logger],
mod: {Estimator.Application, []}
]
end
# Run "mix help deps" to learn about dependencies.
defp deps do
[
{:plug_cowboy, "~> 2.0"},
{:jason, "~> 1.1"},
{:csv, "~> 2.3"},
{:ex_doc, "~> 0.19", only: :dev, runtime: false}
]
end
end