Running in Test Mode?

[lauraannwilliams]

This is so useful, thank you for writing it.

Is there a way to run this when using mix test? It'd be so helpful to get this kind of display on a failing test, but I'm getting errors when i try

    ** (EXIT) no process: the process is not alive or there's no process currently associated with the given name, 
possibly because its application isn't started
    (stdlib 5.0.1) gen_server.erl:386: :gen_server.call/2
    lib/myapp/application.ex:7: (module`)`` 

I tried adding `Application.ensure_all_started(:telemetry)` to my test_helper but that doesn't change anything. 

Even if this can't be done, it's still an awesome library :)

[fuelen]

Hi Laura

Could you provide the code from lib/myapp/application.ex:7?

[fuelen]

@lauraannwilliams is the issue still relevant?

[lauraannwilliams]

My apologies! I thought I'd posted.

Here's my application.ex

defmodule MyApp.Application do
  # See https://hexdocs.pm/elixir/Application.html
  # for more information on OTP Applications
  @moduledoc false

  use Application
  Ecto.DevLogger.install(MyApp.Repo)

  @impl true
  def start(_type, _args) do
    children = [
      # Start the Telemetry supervisor
      MyAppWeb.Telemetry,
      # Start the Ecto repository
      MyApp.Repo,
      # Start the PubSub system
      {Phoenix.PubSub, name: MyApp.PubSub},
      # Start Finch
      {Finch, name: MyApp.Finch},
      # Start the Endpoint (http/https)
      MyAppWeb.Endpoint
      # Start a worker by calling: MyApp.Worker.start_link(arg)
      # {MyApp.Worker, arg}
    ]

    # See https://hexdocs.pm/elixir/Supervisor.html
    # for other strategies and supported options
    opts = [strategy: :one_for_one, name: MyApp.Supervisor]
    Supervisor.start_link(children, opts)
  end

  # Tell Phoenix to update the endpoint configuration
  # whenever the application is updated.
  @impl true
  def config_change(changed, _new, removed) do
    MyAppWeb.Endpoint.config_change(changed, removed)
    :ok
  end
end

my test.exe

import Config

# Configure your database
#
# The MIX_TEST_PARTITION environment variable can be used
# to provide built-in test partitioning in CI environment.
# Run `mix help test` for more information.
config :myapp, MyApp.Repo,
  username: System.get_env("POSTGRES_TEST_USERNAME") || "postgres",
  password: System.get_env("POSTGRES_TEST_PASSWORD") || "postgres",
  hostname: System.get_env("POSTGRES_TEST_HOST") || "postgres",
  database: "myapp_test",
  timeout: 180_000,
  connect_timeout: 180_000,
  pool: Ecto.Adapters.SQL.Sandbox,
  pool_size: 10

if config_env() == :test do
  config :myapp, MyApp.Repo, log: false
end

# We don't run a server during test. If one is required,
# you can enable the server option below.
config :myapp, MyAppWeb.Endpoint,
  http: [ip: {127, 0, 0, 1}, port: 4002],
  secret_key_base: "keybase",
  server: false

# In test we don't send emails.
config :myapp, MyApp.Mailer, adapter: Swoosh.Adapters.Test

# Disable swoosh api client as it is only required for production adapters.
config :swoosh, :api_client, false

# Print only warnings and errors during test
config :logger, level: :warning

# Initialize plugs at runtime for faster test compilation
config :phoenix, :plug_init_mode, :runtime

and my test_helper.ex

ExUnit.configure(exclude: [pending: true])

Application.ensure_all_started(:telemetry)

Faker.start()

ExUnit.start()

Ecto.Adapters.SQL.Sandbox.mode(MyApp.Repo, :manual)

And finally the error message when i run mix.test:

== Compilation error in file lib/myapp/application.ex ==
** (exit) exited in: :gen_server.call(:telemetry_handler_table, {:insert, [:ecto_dev_logger, :myapp, :repo], [[:myapp, :repo, :query]], &Ecto.DevLogger.telemetry_handler/4, []})
    ** (EXIT) no process: the process is not alive or there's no process currently associated with the given name, possibly because its application isn't started
    (stdlib 5.0.1) gen_server.erl:386: :gen_server.call/2
    lib/myapp/application.ex:7: (module)

finally..

elixir --version
Erlang/OTP 26 [erts-14.0.1] [source] [64-bit] [smp:16:16] [ds:16:16:10] [async-threads:1] [jit:ns]

Elixir 1.15.4 (compiled with Erlang/OTP 26)

Thank you very much for your time

[fuelen]

  Ecto.DevLogger.install(MyApp.Repo)

must be called inside def start(...) do block

[lauraannwilliams]

thanks, that should have been very obvious