+
+test("invert", () => {
+ assert.strictEqual(invert([ ])(10), 10);
+ assert.strictEqual(invert([[ 0, Infinity, .1]])( 9), 10);
+ assert.strictEqual(invert([[10, Infinity, .1]])(19), 20);
+ assert.strictEqual(invert([[0, 100, .1], [100, Infinity, .2]])(170), 200);
+});