Ensure method patching works when filename arguments are missing

Author: fgnass

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## 3.1.2 / 2016-05-28
 
 - Proof against weird `require.extensions`. See #134.
+- Ensure method patching works when filename arguments are missing. See #135.
 
 ## 3.1.1 / 2016-05-02
 

test/fixture/vmtest.js

@@ -3,7 +3,11 @@ var fs = require('fs');
 var file = __dirname + '/log.js';
 var str = fs.readFileSync(file, 'utf8');
 
-vm.runInNewContext(str, { module: {}, require: require, console: console }, file);
+if(process.argv.length > 2 && process.argv[2] === 'nofile') {
+  vm.runInNewContext(str, { module: {}, require: require, console: console });
+} else {
+  vm.runInNewContext(str, { module: {}, require: require, console: console }, file);
+}
 
 // Listen for events to keep running
 process.on('message', function () {});

test/index.js

@@ -132,6 +132,10 @@ test('should support vm functions', function (t) {
   run('vmtest.js', t.end.bind(t));
 });
 
+test('should support vm functions with missing file argument', function (t) {
+  run('vmtest.js nofile', t.end.bind(t));
+});
+
 test('should support coffee-script', function (t) {
   run('server.coffee', t.end.bind(t));
 });