* simple test cases and comments about state of things

src/test/cljs/cljs/bigint_test.cljs

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+;; Copyright (c) Rich Hickey. All rights reserved.
+;; The use and distribution terms for this software are covered by the
+;; Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
+;; which can be found in the file epl-v10.html at the root of this distribution.
+;; By using this software in any fashion, you are agreeing to be bound by
+;; the terms of this license.
+;; You must not remove this notice, or any other, from this software.
+
+(ns cljs.bigint-test
+  (:require [cljs.test :refer-macros [deftest is testing]]))
+
+(deftest test-bigint
+  (testing "BigInt Basics"
+    (is (bigint? 1N))
+    (is (bigint? 9007199254740992))
+    (is (bigint? -9007199254740992)))
+  (testing "BigInt & Number equality"
+    ;; the below is a bit backwards from Clojure
+    ;; i.e. (= 0.5 1/2) ; false
+    ;; but  (== 0.5 1/2) ; true
+    (is (= 1 1N))
+    (is (= 1N 1))
+    (is (= 1 1N 1))
+    (is (not (== 1 1N)))
+    (is (not (== 1N 1)))
+    (is (not (== 1 1N 1))))
+  (testing "BigInt Hashing"
+    (is (= (hash 1N) (hash 1)))
+    (is (= (hash 9007199254740992) (hash 9007199254740992)))
+    (is (= (hash -9007199254740992) (hash -9007199254740992))))
+  (testing "BigInt as HashMap keys"
+    (let [m {1N 2}]
+      (is (= 2 (get m 1N)))
+      (is (= 2 (get m 1))))))
+
+(comment
+
+  (cljs.test/run-tests)
+
+  )