GraphQL type is nullable is query parameter has default value

Author: moufmouf

src/ControllerQueryProvider.php

@@ -195,7 +195,7 @@ private function mapParameters(ReflectionMethod $refMethod, \ReflectionMethod $s
 
             try {
                 $arr = [
-                    'type' => $this->mapType($phpdocType, $parameter->getDocBlockTypes(), $allowsNull, true),
+                    'type' => $this->mapType($phpdocType, $parameter->getDocBlockTypes(), $allowsNull || $parameter->isDefaultValueAvailable(), true),
                 ];
             } catch (TypeMappingException $e) {
                 throw TypeMappingException::wrapWithParamInfo($e, $parameter);

tests/ControllerQueryProviderTest.php

@@ -49,6 +49,7 @@ public function testQueryProvider()
         $this->assertInstanceOf(FloatType::class, $usersQuery->getArgument('float')->getType());
         $this->assertInstanceOf(DateTimeType::class, $usersQuery->getArgument('dateTimeImmutable')->getType());
         $this->assertInstanceOf(DateTimeType::class, $usersQuery->getArgument('dateTime')->getType());
+        $this->assertInstanceOf(StringType::class, $usersQuery->getArgument('withDefault')->getType());
         $this->assertSame('TestObject', $usersQuery->getArgument('list')->getType()->getTypeOf()->getItemType()->getTypeOf()->getName());
 
         $mockResolveInfo = $this->createMock(ResolveInfo::class);