Fix overriding directives

src/Parser/Parser.php

@@ -114,7 +114,10 @@ protected function parseOperation($type = Token::TYPE_QUERY)
             $this->eatMulti([Token::TYPE_COMMA]);
 
             $operation = $this->parseBodyItem($type, true);
-            $operation->setDirectives($directives);
+            $operation->setDirectives(array_merge(
+                $directives,
+                $operation->getDirectives()
+            ));
 
             $fields[] = $operation;
         }

tests/Issues/Issue242/Issue242Test.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace Youshido\Tests\Issue242;
+
+use PHPUnit\Framework\TestCase;
+use Youshido\GraphQL\Parser\Parser;
+use Youshido\GraphQL\Parser\Location;
+use Youshido\GraphQL\Parser\Ast\Field;
+use Youshido\GraphQL\Parser\Ast\Query;
+use Youshido\GraphQL\Parser\Ast\Argument;
+use Youshido\GraphQL\Parser\Ast\Directive;
+use Youshido\GraphQL\Parser\Ast\ArgumentValue\Literal;
+
+class Issue242Test extends TestCase
+{
+    public function testDoNotOverrideFirstLevelQueryDirectives()
+    {
+        /**
+         * Without the patch, the operation query will override the first level
+         * query directives.
+         * In this case, directive `@include(if:false)` would be lost
+         * Please notice: the bug happens only when adding "query" at the beginning:
+         * query { ... }
+         * So this query had no issue:
+         * $payload = '{ user @include(if:false) { name } }';
+         */
+        $payload = 'query { user @include(if:false) { name } }';
+        $parser  = new Parser();
+        $data = $parser->parse($payload);
+        $this->assertEquals([
+            'queries'            => [
+                new Query(
+                    'user',
+                    null,
+                    [],
+                    [
+                        new Field('name', null, [], [], new Location(1, 35)),
+                    ],
+                    [
+                        new Directive(
+                            'include',
+                            [
+                                new Argument('if', new Literal(false, new Location(1, 26)), new Location(1, 23)),
+                            ],
+                            new Location(1, 15)
+                        ),
+                    ],
+                    new Location(1, 9)
+                )
+            ],
+            'mutations'          => [],
+            'fragments'          => [],
+            'fragmentReferences' => [],
+            'variables'          => [],
+            'variableReferences' => [],
+        ], $data);
+    }
+}