nested routes should not match superior routes

lib/dispatcher.js

@@ -7,7 +7,7 @@ Router.prototype.dispatcher = function () {
     var match = trie.match(this.request.path)
     var node = match && match.node
     // If no match, go to next middleware
-    if (!node) return yield* next
+    if (notMatch(node)) return yield* next
 
     // If no HEAD middleware, default to GET.
     var method = this.method
@@ -34,4 +34,11 @@ Router.prototype.dispatcher = function () {
   }
 }
 
+function notMatch(node) {
+  if (!node) return true;
+  if (Object.keys(node.child).length) return true;
+
+  return false;
+}
+
 function* noop() {}

test/routes.js

@@ -162,6 +162,17 @@ describe('404', function(){
     .get('/asdf')
     .expect(404, done)
   })
+
+  it('should 404 when not matched', function (done) {
+    app
+    .get('/app/home', function* (next) {
+      this.status = 204;
+    })
+
+    request(server)
+    .get('/app')
+    .expect(404, done)
+  })
 })
 
 function* noop(next) {