Updated the test system

test/curry.test.js

@@ -0,0 +1,12 @@
+const expect = require('expect');
+const {curry} = require('./_30s.js');
+
+test('curry is a Function', () => {
+  expect(curry).toBeInstanceOf(Function);
+});
+test('curries a Math.pow', () => {
+  expect(curry(Math.pow)(2)(10)).toBe(1024);
+});
+test('curries a Math.min', () => {
+  expect(curry(Math.min, 3)(10)(50)(2)).toBe(2);
+});