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(ns clojure.test-clojure.clojure-walk
(:require [clojure.walk :as w])
(:use clojure.test))
(deftest t-prewalk-replace
(is (= (w/prewalk-replace {:a :b} [:a {:a :a} (list 3 :c :a)])
[:b {:b :b} (list 3 :c :b)])))
(deftest t-postwalk-replace
(is (= (w/postwalk-replace {:a :b} [:a {:a :a} (list 3 :c :a)])
[:b {:b :b} (list 3 :c :b)])))
(deftest t-stringify-keys
(is (= (w/stringify-keys {:a 1, nil {:b 2 :c 3}, :d 4})
{"a" 1, nil {"b" 2 "c" 3}, "d" 4})))
(deftest t-prewalk-order
(is (= (let [a (atom [])]
(w/prewalk (fn [form] (swap! a conj form) form)
[1 2 {:a 3} (list 4 [5])])
@a)
[[1 2 {:a 3} (list 4 [5])]
1 2 {:a 3} [:a 3] :a 3 (list 4 [5])
4 [5] 5])))
(deftest t-postwalk-order
(is (= (let [a (atom [])]
(w/postwalk (fn [form] (swap! a conj form) form)
[1 2 {:a 3} (list 4 [5])])
@a)
[1 2
:a 3 [:a 3] {:a 3}
4 5 [5] (list 4 [5])
[1 2 {:a 3} (list 4 [5])]])))
(defrecord Foo [a b c])
(deftest walk
"Checks that walk returns the correct result and type of collection"
(let [colls ['(1 2 3)
[1 2 3]
#{1 2 3}
(sorted-set-by > 1 2 3)
{:a 1, :b 2, :c 3}
(sorted-map-by > 1 10, 2 20, 3 30)
(->Foo 1 2 3)
(map->Foo {:a 1 :b 2 :c 3 :extra 4})]]
(doseq [c colls]
(let [walked (w/walk identity identity c)]
(is (= c walked))
(is (= (type c) (type walked)))
(if (map? c)
(is (= (w/walk #(update-in % [1] inc) #(reduce + (vals %)) c)
(reduce + (map (comp inc val) c))))
(is (= (w/walk inc #(reduce + %) c)
(reduce + (map inc c)))))
(when (or (instance? clojure.lang.PersistentTreeMap c)
(instance? clojure.lang.PersistentTreeSet c))
(is (= (.comparator c) (.comparator walked))))))))
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