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Current File : /webler/tggtd.org/core/vendor/monolog/monolog/tests/Monolog/SignalHandlerTest.php
<?php

/*
 * This file is part of the Monolog package.
 *
 * (c) Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Monolog;

use Monolog\Handler\StreamHandler;
use Monolog\Handler\TestHandler;
use Psr\Log\LogLevel;

/**
 * @author Robert Gust-Bardon <robert@gust-bardon.org>
 * @covers Monolog\SignalHandler
 */
class SignalHandlerTest extends TestCase
{

    private $asyncSignalHandling;
    private $blockedSignals;
    private $signalHandlers;

    protected function setUp()
    {
        $this->signalHandlers = array();
        if (extension_loaded('pcntl')) {
            if (function_exists('pcntl_async_signals')) {
                $this->asyncSignalHandling = pcntl_async_signals();
            }
            if (function_exists('pcntl_sigprocmask')) {
                pcntl_sigprocmask(SIG_BLOCK, array(), $this->blockedSignals);
            }
        }
    }

    protected function tearDown()
    {
        if ($this->asyncSignalHandling !== null) {
            pcntl_async_signals($this->asyncSignalHandling);
        }
        if ($this->blockedSignals !== null) {
            pcntl_sigprocmask(SIG_SETMASK, $this->blockedSignals);
        }
        if ($this->signalHandlers) {
            pcntl_signal_dispatch();
            foreach ($this->signalHandlers as $signo => $handler) {
                pcntl_signal($signo, $handler);
            }
        }
    }

    private function setSignalHandler($signo, $handler = SIG_DFL) {
        if (function_exists('pcntl_signal_get_handler')) {
            $this->signalHandlers[$signo] = pcntl_signal_get_handler($signo);
        } else {
            $this->signalHandlers[$signo] = SIG_DFL;
        }
        $this->assertTrue(pcntl_signal($signo, $handler));
    }

    public function testHandleSignal()
    {
        $logger = new Logger('test', array($handler = new TestHandler));
        $errHandler = new SignalHandler($logger);
        $signo = 2;  // SIGINT.
        $siginfo = array('signo' => $signo, 'errno' => 0, 'code' => 0);
        $errHandler->handleSignal($signo, $siginfo);
        $this->assertCount(1, $handler->getRecords());
        $this->assertTrue($handler->hasCriticalRecords());
        $records = $handler->getRecords();
        $this->assertSame($siginfo, $records[0]['context']);
    }

    /**
     * @depends testHandleSignal
     * @requires extension pcntl
     * @requires extension posix
     * @requires function pcntl_signal
     * @requires function pcntl_signal_dispatch
     * @requires function posix_getpid
     * @requires function posix_kill
     */
    public function testRegisterSignalHandler()
    {
        // SIGCONT and SIGURG should be ignored by default.
        if (!defined('SIGCONT') || !defined('SIGURG')) {
            $this->markTestSkipped('This test requires the SIGCONT and SIGURG pcntl constants.');
        }

        $this->setSignalHandler(SIGCONT, SIG_IGN);
        $this->setSignalHandler(SIGURG, SIG_IGN);

        $logger = new Logger('test', array($handler = new TestHandler));
        $errHandler = new SignalHandler($logger);
        $pid = posix_getpid();

        $this->assertTrue(posix_kill($pid, SIGURG));
        $this->assertTrue(pcntl_signal_dispatch());
        $this->assertCount(0, $handler->getRecords());

        $errHandler->registerSignalHandler(SIGURG, LogLevel::INFO, false, false, false);

        $this->assertTrue(posix_kill($pid, SIGCONT));
        $this->assertTrue(pcntl_signal_dispatch());
        $this->assertCount(0, $handler->getRecords());

        $this->assertTrue(posix_kill($pid, SIGURG));
        $this->assertTrue(pcntl_signal_dispatch());
        $this->assertCount(1, $handler->getRecords());
        $this->assertTrue($handler->hasInfoThatContains('SIGURG'));
    }

    /**
     * @dataProvider defaultPreviousProvider
     * @depends testRegisterSignalHandler
     * @requires function pcntl_fork
     * @requires function pcntl_sigprocmask
     * @requires function pcntl_waitpid
     */
    public function testRegisterDefaultPreviousSignalHandler($signo, $callPrevious, $expected)
    {
        $this->setSignalHandler($signo, SIG_DFL);

        $path = tempnam(sys_get_temp_dir(), 'monolog-');
        $this->assertNotFalse($path);

        $pid = pcntl_fork();
        if ($pid === 0) {  // Child.
            $streamHandler = new StreamHandler($path);
            $streamHandler->setFormatter($this->getIdentityFormatter());
            $logger = new Logger('test', array($streamHandler));
            $errHandler = new SignalHandler($logger);
            $errHandler->registerSignalHandler($signo, LogLevel::INFO, $callPrevious, false, false);
            pcntl_sigprocmask(SIG_SETMASK, array(SIGCONT));
            posix_kill(posix_getpid(), $signo);
            pcntl_signal_dispatch();
            // If $callPrevious is true, SIGINT should terminate by this line.
            pcntl_sigprocmask(SIG_BLOCK, array(), $oldset);
            file_put_contents($path, implode(' ', $oldset), FILE_APPEND);
            posix_kill(posix_getpid(), $signo);
            pcntl_signal_dispatch();
            exit();
        }

        $this->assertNotSame(-1, $pid);
        $this->assertNotSame(-1, pcntl_waitpid($pid, $status));
        $this->assertNotSame(-1, $status);
        $this->assertSame($expected, file_get_contents($path));
    }

    public function defaultPreviousProvider()
    {
        if (!defined('SIGCONT') || !defined('SIGINT') || !defined('SIGURG')) {
            return array();
        }

        return array(
            array(SIGINT, false, 'Program received signal SIGINT'.SIGCONT.'Program received signal SIGINT'),
            array(SIGINT, true, 'Program received signal SIGINT'),
            array(SIGURG, false, 'Program received signal SIGURG'.SIGCONT.'Program received signal SIGURG'),
            array(SIGURG, true, 'Program received signal SIGURG'.SIGCONT.'Program received signal SIGURG'),
        );
    }

    /**
     * @dataProvider callablePreviousProvider
     * @depends testRegisterSignalHandler
     * @requires function pcntl_signal_get_handler
     */
    public function testRegisterCallablePreviousSignalHandler($callPrevious)
    {
        $this->setSignalHandler(SIGURG, SIG_IGN);

        $logger = new Logger('test', array($handler = new TestHandler));
        $errHandler = new SignalHandler($logger);
        $previousCalled = 0;
        pcntl_signal(SIGURG, function ($signo, array $siginfo = null) use (&$previousCalled) {
            ++$previousCalled;
        });
        $errHandler->registerSignalHandler(SIGURG, LogLevel::INFO, $callPrevious, false, false);
        $this->assertTrue(posix_kill(posix_getpid(), SIGURG));
        $this->assertTrue(pcntl_signal_dispatch());
        $this->assertCount(1, $handler->getRecords());
        $this->assertTrue($handler->hasInfoThatContains('SIGURG'));
        $this->assertSame($callPrevious ? 1 : 0, $previousCalled);
    }

    public function callablePreviousProvider()
    {
        return array(
            array(false),
            array(true),
        );
    }

    /**
     * @dataProvider restartSyscallsProvider
     * @depends testRegisterDefaultPreviousSignalHandler
     * @requires function pcntl_fork
     * @requires function pcntl_waitpid
     */
    public function testRegisterSyscallRestartingSignalHandler($restartSyscalls)
    {
        $this->setSignalHandler(SIGURG, SIG_IGN);

        $parentPid = posix_getpid();
        $microtime = microtime(true);

        $pid = pcntl_fork();
        if ($pid === 0) {  // Child.
            usleep(100000);
            posix_kill($parentPid, SIGURG);
            usleep(100000);
            exit();
        }

        $this->assertNotSame(-1, $pid);
        $logger = new Logger('test', array($handler = new TestHandler));
        $errHandler = new SignalHandler($logger);
        $errHandler->registerSignalHandler(SIGURG, LogLevel::INFO, false, $restartSyscalls, false);
        if ($restartSyscalls) {
            // pcntl_wait is expected to be restarted after the signal handler.
            $this->assertNotSame(-1, pcntl_waitpid($pid, $status));
        } else {
            // pcntl_wait is expected to be interrupted when the signal handler is invoked.
            $this->assertSame(-1, pcntl_waitpid($pid, $status));
        }
        $this->assertSame($restartSyscalls, microtime(true) - $microtime > 0.15);
        $this->assertTrue(pcntl_signal_dispatch());
        $this->assertCount(1, $handler->getRecords());
        if ($restartSyscalls) {
            // The child has already exited.
            $this->assertSame(-1, pcntl_waitpid($pid, $status));
        } else {
            // The child has not exited yet.
            $this->assertNotSame(-1, pcntl_waitpid($pid, $status));
        }
    }

    public function restartSyscallsProvider()
    {
        return array(
            array(false),
            array(true),
            array(false),
            array(true),
        );
    }

    /**
     * @dataProvider asyncProvider
     * @depends testRegisterDefaultPreviousSignalHandler
     * @requires function pcntl_async_signals
     */
    public function testRegisterAsyncSignalHandler($initialAsync, $desiredAsync, $expectedBefore, $expectedAfter)
    {
        $this->setSignalHandler(SIGURG, SIG_IGN);
        pcntl_async_signals($initialAsync);

        $logger = new Logger('test', array($handler = new TestHandler));
        $errHandler = new SignalHandler($logger);
        $errHandler->registerSignalHandler(SIGURG, LogLevel::INFO, false, false, $desiredAsync);
        $this->assertTrue(posix_kill(posix_getpid(), SIGURG));
        $this->assertCount($expectedBefore, $handler->getRecords());
        $this->assertTrue(pcntl_signal_dispatch());
        $this->assertCount($expectedAfter, $handler->getRecords());
    }

    public function asyncProvider()
    {
        return array(
            array(false, false, 0, 1),
            array(false, null, 0, 1),
            array(false, true, 1, 1),
            array(true, false, 0, 1),
            array(true, null, 1, 1),
            array(true, true, 1, 1),
        );
    }

}
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