Fixes #9 with test.

src/loadrunner.js

@@ -54,7 +54,8 @@
     // pushObjPath(thing, 'a/b/c', new) //=> thing.a.b.c = new
     var names = path.split('/'), cursor = obj;
     while (names.length > 1) {
-      cursor = cursor[names.shift()] = {};
+      var name = names.shift();
+      cursor = cursor[name] = cursor[name] || {};
     }
     cursor[names[0]] = newobj;
   }

test/modules/sub/submoda.js

@@ -0,0 +1,5 @@
+provide(function(exports) {
+  using('moda', function(moda) {
+    exports(moda);
+  });
+});

test/modules/sub/submodb.js

@@ -0,0 +1,5 @@
+provide(function(exports) {
+  using('modb', function(modb) {
+    exports(modb);
+  });
+});

test/test.html

@@ -193,6 +193,17 @@ <h2 id="qunit-userAgent"></h2>
            });
          });
 
+         QUnit.test('should collect module results without overwriting namespaces', function() {
+           expect(2);
+           stop(1000);
+
+           using('sub/submoda', 'sub/submodb', true, function(results) {
+             equals('success', results.sub.submodb.test(), 'sub.submodb exports loaded');
+             equals('success', results.sub.submoda.test, 'sub.submoda exports loaded');
+             start();
+           });
+         });
+
          QUnit.module('loadrunner.Script.loaded');
 
          QUnit.test('should list files loaded in order', function() {