parallel: Silent test for pause=

Author: xl0

nbs/03a_parallel.ipynb

@@ -475,25 +475,15 @@
    "cell_type": "code",
    "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "0 2023-02-14 20:40:39.098928\n",
-      "1 2023-02-14 20:40:39.350350\n",
-      "2 2023-02-14 20:40:39.601602\n",
-      "3 2023-02-14 20:40:39.851952\n",
-      "4 2023-02-14 20:40:40.102687\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "def print_time(i): \n",
-    "    time.sleep(random.random()/1000)\n",
-    "    print(i, datetime.now())\n",
+    "    time.sleep(random.random()/100)\n",
+    "    return datetime.now()\n",
     "\n",
-    "parallel(print_time, range(5), n_workers=2, pause=0.25);"
+    "res = parallel(print_time, range(5), n_workers=2, pause=0.25)\n",
+    "test_eq(len(res), 5)\n",
+    "test_eq(res, sorted(res)) # Confirm that task end time increases monotonically"
    ]
   },
   {