diff -r 8d4152398825 -r d6ec67fa4a61 src/luan/modules/http/LuanHandler.java
--- a/src/luan/modules/http/LuanHandler.java	Mon Jun 13 18:01:51 2022 -0600
+++ b/src/luan/modules/http/LuanHandler.java	Tue Jun 14 21:59:39 2022 -0600
@@ -49,12 +49,14 @@
 	private static final Method evalInRootMethod;
 	private static final Method disableLuanMethod;
 	private static final Method dontGcMethod;
+	private static final Method testAsInitMethod;
 	static {
 		try {
 			resetLuanMethod = LuanHandler.Fns.class.getMethod( "reset_luan" );
 			evalInRootMethod = LuanHandler.Fns.class.getMethod( "eval_in_root", String.class );
 			disableLuanMethod = LuanHandler.Fns.class.getMethod( "disable_luan" );
 			dontGcMethod = LuanHandler.Fns.class.getMethod( "dont_gc" );
+			testAsInitMethod = LuanHandler.Fns.class.getMethod( "test_as_init", String.class, String.class );
 		} catch(NoSuchMethodException e) {
 			throw new RuntimeException(e);
 		}
@@ -71,6 +73,7 @@
 			Http.put( luanInit, "eval_in_root", new LuanJavaFunction(evalInRootMethod,fns) );
 			Http.put( luanInit, "disable_luan", new LuanJavaFunction(disableLuanMethod,fns) );
 			Http.put( luanInit, "dont_gc", new LuanJavaFunction(dontGcMethod,fns) );
+			Http.put( luanInit, "test_as_init", new LuanJavaFunction(testAsInitMethod,fns) );
 		} catch(LuanException e) {
 			throw new RuntimeException(e);
 		}
@@ -169,6 +172,19 @@
 		}
 	}
 
+	private void test_as_init(String text,String sourceName) throws LuanException {
+		Luan luan;
+		synchronized(luanInit) {
+			luan = new Luan(luanInit);
+		}
+		LuanLogger.startThreadLogging(luan);
+		try {
+			luan.load(text,sourceName,false,null).call(luan);
+		} finally {
+			LuanLogger.endThreadLogging();
+		}
+	}
+
 	public static void start(Server server) throws Exception {
 		try {
 			server.start();
@@ -233,6 +249,10 @@
 		public void dont_gc() throws LuanException {
 			lh().dont_gc();
 		}
+
+		public void test_as_init(String text,String sourceName) throws LuanException {
+			lh().test_as_init(text,sourceName);
+		}
 	}
 
 

diff -r 8d4152398825 -r d6ec67fa4a61 src/luan/modules/http/tools/Run.luan
--- a/src/luan/modules/http/tools/Run.luan	Mon Jun 13 18:01:51 2022 -0600
+++ b/src/luan/modules/http/tools/Run.luan	Tue Jun 14 21:59:39 2022 -0600
@@ -68,6 +68,16 @@
 <% 
 end
 
+function Run.print_error(e,code)
+	Http.response.reset()
+	Http.response.headers["Content-Type"] = "text/plain; charset=utf-8"
+	Io.stdout = Http.response.text_writer()
+	print(e)
+	print()
+	print()
+	print_with_line_numbers(code)
+end
+
 function Run.run(code,source_name)
 	try
 		Http.response.headers["Content-Type"] = "text/plain; charset=utf-8"
@@ -75,13 +85,7 @@
 		run()
 		return true
 	catch e
-		Http.response.reset()
-		Http.response.headers["Content-Type"] = "text/plain; charset=utf-8"
-		Io.stdout = Http.response.text_writer()
-		print(e)
-		print()
-		print()
-		print_with_line_numbers(code)
+		Run.print_error(e,code)
 		return false
 	end
 end