Add test for partial

test/clojure/core_test/partial.cljc

@@ -0,0 +1,25 @@
+(ns clojure.core-test.partial
+  (:require [clojure.test :as t]))
+
+(defn test-fn [& args]
+  (into [] args))
+
+(t/deftest test-partial
+  (let [simple-use (partial inc 2)]
+    (t/is (= 3 (simple-use))))
+  (let [lazily-evaluated (partial inc 2 3)]
+    #?(:clj  (t/is (thrown? Exception (lazily-evaluated)))
+       :cljs (t/is (thrown? js/Error  (lazily-evaluated)))))
+  (let [variadic (partial test-fn 1 2 3)]
+    (t/is (= [1 2 3 4]   (variadic 4)))
+    (t/is (= [1 2 3 4 5] (variadic 4 5))))
+  (let [infinite-sequence (partial #(take %2 %1) (range))]
+    (t/is (= '(0 1 2 3 4) (infinite-sequence 5)))
+    (t/is (= '(0 1 2) (infinite-sequence 3))))
+  (let [partial-partial ((partial partial) test-fn)
+        pppartial (partial partial-partial :inner)]
+    (t/is (= [:inner :outer] (partial-partial :inner :outer)))
+    (t/is (= [:inner :outer] (pppartial :outer))))
+  (let [seq-of-partials (map #(partial * %1 %2) (range) (range))]
+    (t/is (= (map #(* % % %) (range 5))
+             (map #(%1 %2) seq-of-partials (range 5))))))