Form->getUri() should return it's path if no action is defined

src/Symfony/Component/DomCrawler/Form.php

@@ -171,6 +171,10 @@ class Form implements \ArrayAccess
         $uri = $this->node->getAttribute('action');
         $urlHaveScheme = 'http' === substr($uri, 0, 4);
 
+        if(!$uri) {
+            $uri = $this->path;
+        }
+
         if (!in_array($this->getMethod(), array('post', 'put', 'delete')) && $queryString = http_build_query($this->getValues(), null, '&')) {
             $sep = false === strpos($uri, '?') ? '?' : '&';
             $uri .= $sep.$queryString;

tests/Symfony/Tests/Component/DomCrawler/FormTest.php

@@ -288,6 +288,14 @@ class FormTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals('/foo/bar?get=param', $form->getUri(false), '->getUri() returns absolute URIs only if the host has been defined in the constructor');
     }
 
+    public function testGetUriWithoutAction()
+    {
+        $form = $this->createForm('<form><input type="submit" /></form>', null, 'http://localhost', '/foo/bar');
+        $this->assertEquals('http://localhost/foo/bar', $form->getUri(true), '->getUri() returns path if no action defined');
+
+        $this->assertEquals('/foo/bar', $form->getUri(false), '->getUri() returns path if no action defined');
+    }
+
     public function provideGetUriValues()
     {
         return array(
@@ -325,7 +333,7 @@ class FormTest extends \PHPUnit_Framework_TestCase
                 'returns an empty URI if the action is empty',
                 '<form><input type="submit" /></form>',
                 array(),
-                '',
+                '/',
             ),
             array(
                 'appends the form values even if the action is empty',