public function testAddField()
{
$fieldsData = ['id' => ['type' => new IntType()]];
$config = new ObjectTypeConfig(['name' => 'UserType', 'fields' => $fieldsData]);
$this->assertTrue($config->hasFields());
$idField = new Field(['name' => 'id', 'type' => new IntType()]);
$idField->getName();
$nameField = new Field(['name' => 'name', 'type' => new StringType()]);
$this->assertEquals(['id' => $idField], $config->getFields());
$config->addField($nameField);
$this->assertEquals(['id' => $idField, 'name' => $nameField], $config->getFields());
$config->removeField('id');
$this->assertEquals(['name' => $nameField], $config->getFields());
$config->addFields(['id' => $idField]);
$this->assertEquals(['name' => $nameField, 'id' => $idField], $config->getFields());
$levelField = new Field(['name' => 'level', 'type' => new IntType()]);
$config->addFields([$levelField]);
$this->assertEquals(['name' => $nameField, 'id' => $idField, 'level' => $levelField], $config->getFields());
}
