<?php

namespace NoccyLabs\Ipc\Signal;


class SignalHandlerTest extends \PhpUnit\Framework\TestCase
{

    public function testSignalHandlerWithSingleHandlerInConstructor()
    {
        $callbacks = [
            function () use (&$handler1) { $handler1 = true; }
        ];

        $handler = new SignalHandler(SIGUSR1, $callbacks);

        posix_kill(posix_getpid(), SIGUSR1);

        usleep(1000);

        $this->assertEquals(true, $handler1);
    }

    public function testSignalHandlerWithMultipleHandlersInConstructor()
    {
        $callbacks = [
            function () use (&$handler1) { $handler1 = true; },
            function () use (&$handler2) { $handler2 = true; },
            function () use (&$handler3) { $handler3 = true; }
        ];

        $handler = new SignalHandler(SIGUSR1, $callbacks);

        posix_kill(posix_getpid(), SIGUSR1);

        usleep(1000);

        $this->assertEquals(true, $handler1);
        $this->assertEquals(true, $handler2);
        $this->assertEquals(true, $handler3);
    }

    public function testSignalHandlerWithAddedHandlers()
    {
        $callbacks = [
            function () use (&$handler1) { $handler1 = true; },
            function () use (&$handler2) { $handler2 = true; }
        ];

        $handler = new SignalHandler(SIGUSR1, $callbacks);

        $handler->addHandler(function () use (&$handler3) { $handler3 = true; });

        posix_kill(posix_getpid(), SIGUSR1);

        usleep(1000);

        $this->assertEquals(true, $handler1);
        $this->assertEquals(true, $handler2);
        $this->assertEquals(true, $handler3);
    }

    public function testSignalHandlerWithBlockingHandler()
    {
        $callbacks = [
            function () use (&$handler1) { $handler1 = true; return true; },
            function () use (&$handler2) { $handler2 = true; },
            function () use (&$handler3) { $handler3 = true; }
        ];

        $handler = new SignalHandler(SIGUSR1, $callbacks);

        posix_kill(posix_getpid(), SIGUSR1);

        usleep(1000);

        $this->assertEquals(true, $handler1);
        $this->assertEquals(false, $handler2);
        $this->assertEquals(false, $handler3);
    }
    
}