Clean up the console redirect a little (#48206)

src/mono/wasm/runtime-test.js

@@ -5,63 +5,70 @@
 
 //glue code to deal with the differences between chrome, ch, d8, jsc and sm.
 var is_browser = typeof window != "undefined";
-var consoleWebSocket;
-var print;
 
-if (is_browser) {
-	// We expect to be run by tests/runtime/run.js which passes in the arguments using http parameters
-	window.real_print = console.log;
-	print = function(_msg) { window.real_print(_msg); };
-	console.log = print;
-	console.debug = print;
-	console.error = print;
-	console.trace = print;
-	console.warn = print;
-	console.info = print;
+// if the engine doesn't provide a console
+if (typeof (console) === "undefined") {
+	var console = {
+		log: globalThis.print,
+		clear: function () { }
+	};
+}
 
+globalThis.testConsole = console;
+
+function proxyMethod (prefix, func, asJson) {
+	return function() {
+		var args = [...arguments];
+		if (asJson) {
+			func (JSON.stringify({
+				method: prefix,
+				payload: args[0],
+				arguments: args
+			}));
+		} else {
+			func([prefix + args[0], ...args.slice(1)]);
+		}
+	};
+};
+
+var methods = ["debug", "trace", "warn", "info", "error"];
+for (var m of methods) {
+	if (typeof(console[m]) != "function") {
+		console[m] = proxyMethod(`console.${m}: `, console.log, false);
+	}
+}
+
+function proxyJson (func) {
+	for (var m of ["log", ...methods])
+		console[m] = proxyMethod(`console.${m}`,func, true);
+}
+
+if (is_browser) {
 	const consoleUrl = `${window.location.origin}/console`.replace('http://', 'ws://');
 
-	consoleWebSocket = new WebSocket(consoleUrl);
+	let consoleWebSocket = new WebSocket(consoleUrl);
 	consoleWebSocket.onopen = function(event) {
-		consoleWebSocket.send("browser: Console websocket connected.");
-
-		window.real_print = function(msg) {
-			consoleWebSocket.send(msg);
-		};
+		proxyJson(function (msg) { consoleWebSocket.send (msg); });
+		globalThis.testConsole.log("browser: Console websocket connected.");
 	};
 	consoleWebSocket.onerror = function(event) {
 		console.log(`websocket error: ${event}`);
 	};
 
+	// We expect to be run by tests/runtime/run.js which passes in the arguments using http parameters
 	var url = new URL (decodeURI (window.location));
 	arguments = [];
 	for (var v of url.searchParams) {
 		if (v [0] == "arg") {
-			console.log ("URL ARG: " + v [0] + "=" + v [1]);
 			arguments.push (v [1]);
 		}
 	}
 }
+//proxyJson(console.log);
 
-// JavaScript core does not have a console defined
-if (typeof console === "undefined") {
-	var Console = function () {
-		this.log = function(msg){ print(msg) };
-		this.clear = function() { };
-	};
-	console = new Console();
-}
 
-if (typeof console !== "undefined") {
-	if (!console.debug)
-		console.debug = console.log;
-	if (!console.trace)
-		console.trace = console.log;
-	if (!console.warn)
-		console.warn = console.log;
-	if (!console.error)
-		console.error = console.log;
-}
+let print = globalThis.testConsole.log;
+let printErr = globalThis.testConsole.error;
 
 if (typeof crypto === 'undefined') {
 	// **NOTE** this is a simple insecure polyfill for testing purposes only
@@ -112,7 +119,7 @@ function test_exit (exit_code) {
 	if (is_browser) {
 		// Notify the selenium script
 		Module.exit_code = exit_code;
-		print ("WASM EXIT " + exit_code);
+		Module.print ("WASM EXIT " + exit_code);
 		var tests_done_elem = document.createElement ("label");
 		tests_done_elem.id = "tests_done";
 		tests_done_elem.innerHTML = exit_code.toString ();
@@ -123,7 +130,7 @@ function test_exit (exit_code) {
 }
 
 function fail_exec (reason) {
-	print (reason);
+	Module.print (reason);
 	test_exit (1);
 }
 
@@ -138,7 +145,7 @@ function inspect_object (o) {
 
 // Preprocess arguments
 var args = testArguments;
-print("Arguments: " + testArguments);
+console.info("Arguments: " + testArguments);
 profilers = [];
 setenv = {};
 runtime_args = [];
@@ -202,8 +209,8 @@ loadScript ("mono-config.js");
 var Module = {
 	mainScriptUrlOrBlob: "dotnet.js",
 
-	print: print,
-	printErr: function(x) { print ("WASM-ERR: " + x) },
+	print,
+	printErr,
 
 	onAbort: function(x) {
 		print ("ABORT: " + x);
@@ -297,7 +304,7 @@ var App = {
 
 		Module.wasm_exit = Module.cwrap ('mono_wasm_exit', 'void', ['number']);
 
-		Module.print("Initializing.....");
+		console.info("Initializing.....");
 
 		for (var i = 0; i < profilers.length; ++i) {
 			var init = Module.cwrap ('mono_wasm_load_profiler_' + profilers [i], 'void', ['string'])