Crud\Test\TestCase\Listener\ApiListenerTest::testEnsureSerializeAlreadySet PHP Method

    public function testEnsureSerializeAlreadySet()
    {
        $listener = $this->getMockBuilder('\\Crud\\Listener\\ApiListener')->setMethods(['_action', '_controller'])->disableOriginalConstructor()->getMock();
        $controller = $this->getMockBuilder('\\Cake\\Controller\\Controller')->setMethods(['set'])->disableOriginalConstructor()->getMock();
        $controller->viewVars['_serialize'] = 'hello world';
        $action = $this->getMockBuilder('\\Crud\\Action\\IndexAction')->setMethods(['config', 'viewVar'])->disableOriginalConstructor()->getMock();
        $i = 0;
        $listener->expects($this->at($i++))->method('_controller')->will($this->returnValue($controller));
        $listener->expects($this->never())->method('_action');
        $action->expects($this->never())->method('viewVar');
        $controller->expects($this->never())->method('set');
        $this->setReflectionClassInstance($listener);
        $this->callProtectedMethod('_ensureSerialize', [], $listener);
    }