fix: schema can be printed

Author: sforward

src/GraphQL.php

@@ -365,17 +365,11 @@ public function buildSchemaFromConfig(array $schemaConfig): Schema
 
         $this->addTypes($schemaTypes);
 
-        $query = $this->objectType($schemaQuery, [
-            'name' => 'Query',
-        ]);
+        $query = $this->objectType($schemaQuery, ['name' => 'Query']);
 
-        $mutation = $schemaMutation
-            ? $this->objectType($schemaMutation, ['name' => 'Mutation'])
-            : null;
+        $mutation = $this->objectType($schemaMutation, ['name' => 'Mutation']);
 
-        $subscription = $schemaSubscription
-            ? $this->objectType($schemaSubscription, ['name' => 'Subscription'])
-            : null;
+        $subscription = $this->objectType($schemaSubscription, ['name' => 'Subscription']);
 
         $directives = Directive::getInternalDirectives();
 

tests/Unit/GraphQLQueryTest.php

@@ -3,6 +3,7 @@
 declare(strict_types = 1);
 namespace Rebing\GraphQL\Tests\Unit;
 
+use GraphQL\Utils\SchemaPrinter;
 use Rebing\GraphQL\Support\Facades\GraphQL;
 use Rebing\GraphQL\Tests\Support\Objects\ExamplesQuery;
 use Rebing\GraphQL\Tests\TestCase;
@@ -212,4 +213,21 @@ public function testCustomDefaultFieldResolverClosure(): void
         self::assertSame($expectedDataResult, $result->data);
         self::assertCount(0, $result->errors);
     }
+
+    public function testPrintSchema(): void
+    {
+        $schema = GraphQL::buildSchemaFromConfig([
+            'query' => [
+                'examplesCustom' => ExamplesQuery::class,
+            ],
+        ]);
+
+        $gql = SchemaPrinter::doPrint($schema);
+
+        $queryFragment = 'type Query {
+  examplesCustom(index: Int): [Example]
+}';
+
+        self::assertStringContainsString($queryFragment, $gql);
+    }
 }