;; Copyright (C) 2023  Felisp
;;
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU Affero General Public License as published by
;; the Free Software Foundation, version 3 of the License.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU Affero General Public License for more details.
;;
;; You should have received a copy of the GNU Affero General Public License
;; along with this program.  If not, see <https://www.gnu.org/licenses/>.

(ns rss-thread-watch.utils-test
  (:require [clojure.test :refer :all]
            [rss-thread-watch.utils :refer :all]))

(def first-map
  "Example config map with two keys"
  {:a :b
   :c "c"
   :nested {:fst 1 :scnd {:super :nested}}})

(def pony-map
  "Map containing none of the items in map 1"
  {:best-pony "Twilight Sparkle"})

(def conflicting-basic-merge (conj pony-map {:a 17 :c 15}))

(def deep-pony-map {:a "x"
                    :c :something-else
                    :nested {:ponies "everywhere"
                             :fst 69}})

(def empty-map {})

(deftest map-apply-defaults-test
  (testing "Full and no-replace"
    (is (= first-map (map-apply-defaults first-map empty-map))
        "No defaults should return conf map unchanged")
    (is (= first-map (map-apply-defaults empty-map first-map))
        "Empty map should be completely replaced by defaults"))

  (testing "Basic merge"
    (is (= (conj pony-map first-map) (map-apply-defaults first-map pony-map))
        "When all keys unique, maps should be conjd")
    (is (= (conj first-map pony-map) (map-apply-defaults first-map pony-map))
        "When all keys unique, maps should be conjd, order matters")
    (is (= (conj first-map pony-map) (map-apply-defaults pony-map first-map))
        "When all keys unique, maps should be conjd, more order that matters")
    (is (= (conj first-map pony-map) (map-apply-defaults first-map pony-map))
        "Conflicting basic merge"))
  ;; Most important part, this is the reason we have the function in the first place
  ;; Conj wont merge deep
  (testing "Nested merge"
    (is (= {:a :b
            :c "c"
            :nested {:ponies "everywhere"
                     :fst 1
                     :scnd {:super :nested}}}
           (map-apply-defaults  first-map deep-pony-map)))))

(deftest fmap-test
  (testing "Applying function to values of map"
    (is (= {:a 2 :b 3} (fmap (fn [k v] (inc v))
                             {:a 1 :b 2})))))