public function testConfigMergeWorks()
{
$this->Crud->config(['messages' => ['invalidId' => ['code' => 500]]]);
$expected = ['code' => 500, 'class' => 'Cake\\Network\\Exception\\BadRequestException', 'text' => 'Invalid id'];
$result = $this->Crud->config('messages.invalidId');
$this->assertEquals($expected, $result);
}