ClojureScript unit tests running in the Graal JavaScript engine

transcript.txt

$ java -version
java version "1.8.0_161"
Java(TM) SE Runtime Environment (build 1.8.0_161-b12)
GraalVM 1.0.0-rc1 (build 25.71-b01-internal-jvmci-0.42, mixed mode)
$ time js /Users/mfikes/Projects/clojurescript/builds/out-adv/core-advanced-test.js

Testing cljs.apply-test

Testing cljs.primitives-test

Testing cljs.destructuring-test

Testing cljs.new-new-test

Testing cljs.printing-test

Testing cljs.seqs-test

Testing cljs.collections-test

Testing cljs.hashing-test

Testing cljs.core-test
{:result true, :num-tests 10, :seed 1524934709931, :test-var "boolean-test"}

Testing cljs.reader-test

Testing clojure.string-test
{:result true, :num-tests 100, :seed 1524934721150, :test-var "test-cljs-2300"}

Testing clojure.data-test

Testing clojure.walk-test

Testing cljs.letfn-test

Testing cljs.reducers-test

Testing cljs.binding-test

Testing cljs.macro-test

Testing cljs.top-level

Testing cljs.keyword-test

Testing cljs.ns-test

Testing cljs.ns-test.foo

Testing foo.ns-shadow-test

Testing cljs.import-test

Testing cljs.pprint

Testing cljs.spec-test

Testing cljs.spec.test-test

Testing cljs.clojure-alias-test

Testing cljs.hash-map-test

Testing cljs.map-entry-test

Testing cljs.npm-deps-test

Testing cljs.pprint-test

Testing cljs.predicates-test

Testing cljs.syntax-quote-test

Testing cljs.tagged-literals-test

Testing cljs.test-test

Testing static.core-test

Testing cljs.recur-test

Testing cljs.array-access-test

Testing cljs.extend-to-object-test

Ran 402 tests containing 19132 assertions.
0 failures, 0 errors.

real	0m37.416s
user	1m27.718s
sys	0m1.771s

For comparison of relative speed on the same box

JavaScriptCore:

real	0m1.812s
user	0m2.995s
sys	0m0.144s

V8:

real	0m2.174s
user	0m2.591s
sys	0m0.088s

SpiderMonkey:

real	0m7.650s
user	0m10.450s
sys	0m0.914s

ChakraCore:

real	0m4.339s
user	0m5.543s
sys	0m0.301s

Nashorn (1.8.0_172):

real	1m27.462s
user	3m47.466s
sys	0m2.877s

For a graph, see https://twitter.com/mfikes/status/990278534827511808

If Graal offers Java support shouldn't you be able to use Clojure directly?