Navigator test: added nested worker and worker from blob

Fixes #458

test/navigatorTestWorker.js

@@ -2,6 +2,7 @@
 	"use strict";
 	
 	const values = {};
+	let nestedValues = false;
 	const navigator = self.navigator;
 	Object.keys(navigator.__proto__).sort().forEach(function(property){
 		const value = navigator[property];
@@ -9,16 +10,49 @@
 			values[property] = value;
 		}
 	});
-	if (self.postMessage){
-		self.postMessage(values);
+	
+	const ports = [];
+	const sources = [];
+	let sendDelayed = false;
+	function sendData(){
+		sendDelayed = true;
+		if (self.postMessage){
+			self.postMessage({values, nestedValues});
+		}
+		ports.forEach(function(port){
+			port.postMessage({values, nestedValues});
+		});
+		sources.forEach(function(source){
+			source.postMessage({values, nestedValues});
+		});
 	}
 	self.addEventListener("connect", function(event){
 		event.ports.forEach(function(port){
-			port.postMessage(values);
+			ports.push(port);
 		});
+		if (sendDelayed){
+			sendData();
+		}
 	});
 	self.addEventListener("message", function(event){
-		event.source.postMessage(values);
-		return values;
+		sources.push(event.source);
+		if (sendDelayed){
+			sendData();
+		}
 	});
+	
+	if (
+		!(self.name && self.name.startsWith("nested nested")) &&
+		self.Worker
+	){
+		const worker = new Worker(self.location, {name: "nested " + (self.name || "")});
+		worker.addEventListener("message", function(event){
+			nestedValues = event.data;
+			worker.terminate();
+			sendData();
+		});
+	}
+	else {
+		sendData();
+	}
 }());