Merge branch '3.4'

* 3.4:
  [Bridge\PhpUnit] Fix infinite loop when running isolated method
  remove unused fixtures file
  parse references on merge keys with objects

Author: nicolas-grekas

src/Symfony/Bridge/PhpUnit/bin/simple-phpunit

@@ -81,6 +81,11 @@ if (!file_exists("$PHPUNIT_DIR/phpunit-$PHPUNIT_VERSION/phpunit") || md5_file(__
 
 define('PHPUNIT_COMPOSER_INSTALL', __DIR__.'/vendor/autoload.php');
 require PHPUNIT_COMPOSER_INSTALL;
+if (class_exists('PHPUnit_Util_Blacklist')) {
+    PHPUnit_Util_Blacklist::$blacklistedClassNames['\PHPUnit\Framework\TestCase'] = 3;
+} else {
+    PHPUnit\Util\Blacklist::$blacklistedClassNames['\PHPUnit\Framework\TestCase'] = 3;
+}
 Symfony\Bridge\PhpUnit\TextUI\Command::main();
 
 EOPHP

src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services31.php

@@ -315,6 +315,11 @@ private function doParse(string $value, int $flags)
                         $value = $this->parseBlock($this->getRealCurrentLineNb() + 1, $this->getNextEmbedBlock(), $flags);
                         if ('<<' === $key) {
                             $this->refs[$refMatches['ref']] = $value;
+
+                            if (Yaml::PARSE_OBJECT_FOR_MAP & $flags && $value instanceof \stdClass) {
+                                $value = (array) $value;
+                            }
+
                             $data += $value;
                         } elseif ($allowOverwrite || !isset($data[$key])) {
                             // Spec: Keys MUST be unique; first one wins.

src/Symfony/Component/Yaml/Parser.php

@@ -1860,6 +1860,34 @@ public function testParseReferencesOnMergeKeys()
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
+
+    public function testParseReferencesOnMergeKeysWithMappingsParsedAsObjects()
+    {
+        $yaml = <<<YAML
+mergekeyrefdef:
+    a: foo
+    <<: &quux
+        b: bar
+        c: baz
+mergekeyderef:
+    d: quux
+    <<: *quux
+YAML;
+        $expected = (object) array(
+            'mergekeyrefdef' => (object) array(
+                'a' => 'foo',
+                'b' => 'bar',
+                'c' => 'baz',
+            ),
+            'mergekeyderef' => (object) array(
+                'd' => 'quux',
+                'b' => 'bar',
+                'c' => 'baz',
+            ),
+        );
+
+        $this->assertEquals($expected, $this->parser->parse($yaml, Yaml::PARSE_OBJECT_FOR_MAP));
+    }
 }
 
 class B