core_test.cljc

(ns mate.core-test
  (:require [clojure.test :refer [deftest testing is are]]
            [mate.core :as m]))

(deftest implies-test
  (is (true?  (m/implies true  true)))
  (is (false? (m/implies true  false)))
  (is (true?  (m/implies false true)))
  (is (true?  (m/implies false false))))

(deftest seq-indexed-test
  (is (= '([0 :a] [1 :a] [2 :b] [3 :a] [4 :b])
         (m/seq-indexed [:a :a :b :a :b]))))

(deftest mapcat-indexed-test
  (is (= '[:a 0 :b 1 :c 2]
         (into []
               (m/mapcat-indexed (fn [index x] [x index]))
               [:a :b :c])))
  (is (= '(:a 0 :b 1 :c 2)
         (m/mapcat-indexed (fn [index x] [x index])
                           [:a :b :c]))))

(deftest re-find-indexed-test
  ;; Test with no subgroup
  (is (= [4 "${aaa}"]
         (m/re-find-indexed #"\$\{[^\{\}]*\}" "xxx ${aaa} ${bbb} yyy")))

  ;; Test with 1 subgroup
  (let [re (-> #"\$\{([^\{\}]*)\}")
        ;; flag "d" generate indices for substring matches in Javascript.
        ;; See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#advanced_searching_with_flags
        #?@(:cljs [re (m/re-with-flags re "d")])]
    (is (= [[4 "${aaa}"] [6 "aaa"]]
           (m/re-find-indexed re "xxx ${aaa} ${bbb} yyy")))))

(deftest comp->-test
  (is (= "3"
         ((m/comp-> inc str) 2))))

(deftest if->-test
  (is (= [:a #_:b
          :c
          #_:d #_:e :f :g]
         (-> []
             (m/if-> true
               (conj :a)
               (conj :b))
             (conj :c)
             (m/if-> false
               (->
                 (conj :d)
                 (conj :e))
               (->
                 (conj :f)
                 (conj :g)))))))

(deftest let->-test
  (is (= [:a :b :c :d]
         (-> []
             (m/let-> [a :a]
               (conj a))
             (m/let-> [b :b
                       c :c]
               (->
                 (conj b)
                 (conj c)))
             (conj :d)))))

(deftest group-by-test
  (let [coll [[:a 1] [:a 2] [:b 3] [:a 4] [:b 5]]]
    (is (= {:a [[:a 1] [:a 2] [:a 4]]
            :b [[:b 3] [:b 5]]}
           (m/group-by first coll)))

    (is (= {:a [1 2 4]
            :b [3 5]}
           (m/group-by first second coll)))

    (is (= {:a 7
            :b 8}
           (m/group-by first second + coll)))

    (is (= {:a 17
            :b 18}
           (m/group-by first second + 10 coll)))))

(deftest index-by-test
  (let [coll [[:a 1] [:a 2] [:b 3] [:a 4] [:b 5]]]
    (is (= {:a [:a 4]
            :b [:b 5]}
           (m/index-by first coll)))

    (is (= {:a 4
            :b 5}
           (m/index-by first second coll)))))

(deftest ungroup-keys-test
  (is (= {:a      1
          :b      1
          :c      2
          :d      3
          :e      3
          {:f :g} 4}
         (m/ungroup-keys {:a       "this value will be overwritten"
                          [:a :b]  1
                          :c       2
                          #{:d :e} 3
                          {:f :g}  4}))))