test fix

Author: mvorisek

tests/Element/DocumentElementTest.php

@@ -70,9 +70,9 @@ public function testFind()
             ->expects($this->exactly(3))
             ->method('selectorToXpath')
             ->will($this->returnValueMap(array(
-                array('xpath', $xpath, $xpath),
-                array('xpath', $xpath, $xpath),
-                array('css', $css, $xpath),
+                array('xpath', $xpath, '(' . $xpath . ')[1]'),
+                array('xpath', $xpath, '(' . $xpath . ')[1]'),
+                array('css', $css, '(' . $xpath . ')[1]'),
             )));
 
         $this->assertEquals(2, $this->document->find('xpath', $xpath));