jsofra

(def ^:dynamic *config* nil)

(defn save [data & {:keys [config] :or {config *config*}}]
  (println (format "Saved %s with %s" data config)))

;; => (save {:a 5 :b 6} :config {:some :config})
;; Saved {:a 5, :b 6} with {:some :config}
;; nil
;; => (binding [*config* {:some :config}] (save {:a 5 :b 6}))
;; Saved {:a 5, :b 6} with {:some :config}

jsofra

# the LazyDict implementation, callable values are evaluated before returning them
class LazyDict(dict):
    def __getitem__(self, k):
        val = dict.__getitem__(self, k)
        if callable(val):
            val = val()
            self[k] = val
        return val

# creates lambdas of all the dict entries

jsofra

(ns db-fixture  
  (:require [config :as config])
  (:import (org.testcontainers.containers GenericContainer
                                          BindMode)))

(defn create-db-container [{:keys [dbname user password]}]
  (-> (GenericContainer. "postgres:12.2")
      (.withExposedPorts (into-array Integer [(int 5432)]))
      (.withEnv "POSTGRES_DB" dbname)
      (.withEnv "POSTGRES_USER" user)