Merge branch '3.2'

* 3.2:
  Refactored other PHPUnit method calls to work with namespaced PHPUnit 6
  Refactored other PHPUnit method calls to work with namespaced PHPUnit 6
  Further refactorings to PHPUnit namespaces
  resolve parameters in definition classes

Author: nicolas-grekas

Tests/CrawlerTest.php

@@ -996,6 +996,8 @@ public function testChildren()
             $crawler = new Crawler('<p></p>');
             $crawler->filter('p')->children();
             $this->assertTrue(true, '->children() does not trigger a notice if the node has no children');
+        } catch (\PHPUnit\Framework\Error\Notice $e) {
+            $this->fail('->children() does not trigger a notice if the node has no children');
         } catch (\PHPUnit_Framework_Error_Notice $e) {
             $this->fail('->children() does not trigger a notice if the node has no children');
         }