Migrate to Config, add runtime.exs, adjust CI config

.github/workflows/ci.yml

@@ -26,6 +26,9 @@ jobs:
           --health-interval 10s
           --health-timeout 5s
           --health-retries 5
+    env:
+      MIX_ENV: test
+      DB_URL: postgres://postgres:postgres@postgres/keila
     steps:
       - uses: actions/checkout@v2
       - uses: actions/cache@v2
@@ -36,16 +39,12 @@ jobs:
             ~/assets/node_modules
           key: ${{ runner.os }}-${{ hashFiles('mix.lock') }}
       - name: mix deps.get
-        env:
-          MIX_ENV: test
         run: |
           apk add build-base git
           mix local.rebar --force
           mix local.hex --force
           mix deps.get
       - name: mix ecto.create && ecto.migrate
-        env:
-          MIX_ENV: test
         run: |
           mix ecto.create
           mix ecto.migrate

config/config.exs

@@ -5,7 +5,7 @@
 # is restricted to this project.
 
 # General application configuration
-use Mix.Config
+import Config
 
 config :keila,
   ecto_repos: [Keila.Repo]
@@ -34,4 +34,4 @@ config :phoenix, :json_library, Jason
 
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.
-import_config "#{Mix.env()}.exs"
+import_config "#{config_env()}.exs"

config/dev.exs

@@ -1,4 +1,4 @@
-use Mix.Config
+import Config
 
 # Configure your database
 config :keila, Keila.Repo,

config/prod.exs

@@ -1,4 +1,4 @@
-use Mix.Config
+import Config
 
 # For production, don't forget to configure the url host
 # to something meaningful, Phoenix uses this information

config/prod.secret.exs

@@ -2,7 +2,7 @@
 # from environment variables. You can also hardcode secrets,
 # although such is generally not recommended and you have to
 # remember to add this file to your .gitignore.
-use Mix.Config
+import Config
 
 database_url =
   System.get_env("DATABASE_URL") ||

config/runtime.exs

@@ -0,0 +1,23 @@
+import Config
+
+update_env = fn (app, key, update_fn) ->
+  value = update_fn.(Application.get_env(app, key))
+  Application.put_env(app, key, value)
+end
+
+if config_env() == :prod do
+
+end
+
+if config_env() == :test do
+  db_url = System.get_env("DB_URL")
+  if db_url do
+    db_url = db_url <> "#{System.get_env("MIX_TEST_PARTITION")}"
+    update_env.(:keila, Keila.Repo, &Keyword.replace(&1, :url, db_url))
+  end
+  # username: "postgres",
+  # password: "postgres-keila-dev-pw",
+  # database: "keila_test#{System.get_env("MIX_TEST_PARTITION")}",
+  # hostname: "localhost",
+  # port: 54323,
+end

config/test.exs

@@ -1,15 +1,13 @@
-use Mix.Config
+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.
+# URL can be overwritten with the DB_URL environment variable.
 config :keila, Keila.Repo,
-  username: "postgres",
-  password: "postgres",
-  database: "keila_test#{System.get_env("MIX_TEST_PARTITION")}",
-  hostname: "postgres",
+  url: "ecto://postgres:postgres@localhost:5432/keila_test#{System.get_env("MIX_TEST_PARTITION")}",
   pool: Ecto.Adapters.SQL.Sandbox
 
 # We don't run a server during test. If one is required,