Cleaner test

test/test-basic.ts

@@ -1,6 +1,6 @@
 import 'source-map-support/register'
 import * as test from 'purple-tape'
-import { setRandomizedInterval, setRandomizedIntervalAsync } from '../index'
+import { setRandomizedInterval } from '../index'
 
 test('shall fire a reasonable number of times', function*(t) {
     let times = 0
@@ -64,15 +64,11 @@ test('unref()', function*(t) {
     t.pass('if the test exits, the unref() was successful')
 })
 
-test('setRandomizedIntervalAsync clear()', function*(t) {
-    let t1 = setRandomizedIntervalAsync(async () => {
-        await wait(1000)
+test('setRandomizedInterval clear()', function(t) {
+    let t1 = setRandomizedInterval(() => {
+        t1.clear()
     }, 100)
 
-    yield wait(100)
-
-    t1.clear()
-
     t.pass('if the test exits, the clear() was successful')
 })