Go! AOP Test

gistfile1.txt

<?php
use \Go\Core\AspectKernel;
use \Go\Core\AspectContainer;

/**
 * Application Aspect Kernel
 */
class ApplicationAspectKernel extends AspectKernel
{

    /**
     * Configure an AspectContainer with advisors, aspects and pointcuts
     *
     * @param AspectContainer $container
     *
     * @return void
     */
    protected function configureAop(AspectContainer $container)
    {
        $container->registerAspect(new \Aspect\MonitorAspect());
    }
}

*********************************************************


<?php
namespace Aspect;

use \Go\Aop\Aspect;
use \Go\Aop\Intercept\MethodInvocation;
use \Go\Lang\Annotation\Before;

/**
 * Monitor aspect
 */

class MonitorAspect implements Aspect
{
    
    function __construct() {
        echo "initialized<br>";
    }

    /**
     * @Before("call(public Test->*(*))")
     */
    public function beforeMethodExecution(MethodInvocation $invocation)
    {
        echo "caught here";
        /*$obj = $invocation->getThis();
        echo 'Calling Before Interceptor for method: ',
             is_object($obj) ? get_class($obj) : $obj,
             $invocation->getMethod()->isStatic() ? '::' : '->',
             $invocation->getMethod()->getName(),
             '()',
             ' with arguments: ',
             json_encode($invocation->getArguments()),
             "<br>\n";*/
    }
}


************************************


<?php
namespace Test;

class Test 
{
    function __construct() {
        ;
    }
    
    function show()
    {
        echo "showing something";
    }
    //put your code here
}



**********************************************

<?php
ini_set('display_errors',1);
ini_set('display_startup_errors',1);
error_reporting(-1);

require_once __DIR__.'/vendor/autoload.php'; 
include "src/Test/Test.php";
include "src/ApplicationAspectKernel.php";
include "src/Aspect/MonitorAspect.php";
use \ApplicationAspectKernel, Test\Test;

$applicationAspectKernel = ApplicationAspectKernel::getInstance();
$applicationAspectKernel->init(array(
        'debug' => true, // Use 'false' for production mode
        // Cache directory
        'cacheDir' => __DIR__ . '/cache/',
        'includePaths' => array(
            __DIR__ . '/src/'
        )
));

$test = new Test();
$test->show();

You have wrong definition of pointcut. There is no "call" join point, only "execution", look at examples in documentation. There are also examples in the smoke test: https://github.com/lisachenko/go-aop-php/blob/master/tests/Go/Aop/Pointcut/PointcutParserTest.php#L57-L96