Add post-quit sleep for Safari (#220)

Hopefully this improves stability.

Author: camillobruni

tests/run-browser.mjs

@@ -33,6 +33,11 @@ import os from "os";
 
 import {logInfo, logError, printHelp, runTest} from "./helper.mjs";
 
+
+function sleep(ms) {
+    return new Promise(resolve => setTimeout(resolve, ms));
+}
+
 const optionDefinitions = [
     { name: "browser", type: String, description: "Set the browser to test, choices are [safari, firefox, chrome, edge]. By default the $BROWSER env variable is used." },
     { name: "port", type: Number, defaultValue: 8010, description: "Set the test-server port, The default value is 8010." },
@@ -135,6 +140,8 @@ async function testEnd2End(params) {
         throw e;
     } finally {
         await driver.quit();
+        if (BROWSER === "safari")
+            await sleep(1000);
         if (!success) {
             await printLogs(sessionId);
         }