public function testViewClassDefaults()
{
$apiListener = $this->getMockBuilder('\\Crud\\Listener\\ApiListener')->disableOriginalConstructor()->setMethods(null)->getMock();
$result = $apiListener->config('viewClasses');
$expected = ['json' => 'Json', 'xml' => 'Xml'];
$this->assertEquals($expected, $result, 'The default viewClasses setting has changed');
}