<?php
 
 /*
  * This file is part of the Symfony package.
  *
  * (c) Fabien Potencier <fabien@symfony.com>
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
 
 namespace Symfony\Component\Debug\Tests;
 
 use PHPUnit\Framework\TestCase;
 use Psr\Log\LogLevel;
 use Psr\Log\NullLogger;
 use Symfony\Component\Debug\BufferingLogger;
 use Symfony\Component\Debug\ErrorHandler;
 use Symfony\Component\Debug\Exception\SilencedErrorContext;
 use Symfony\Component\Debug\Tests\Fixtures\ErrorHandlerThatUsesThePreviousOne;
 use Symfony\Component\Debug\Tests\Fixtures\LoggerThatSetAnErrorHandler;
 
 /**
  * ErrorHandlerTest.
  *
  * @author Robert Schönthal <seroscho@googlemail.com>
  * @author Nicolas Grekas <p@tchwork.com>
  */
 class ErrorHandlerTest extends TestCase
 {
     public function testRegister()
     {
         $handler = ErrorHandler::register();
 
         try {
             $this->assertInstanceOf('Symfony\Component\Debug\ErrorHandler', $handler);
             $this->assertSame($handler, ErrorHandler::register());
 
             $newHandler = new ErrorHandler();
 
             $this->assertSame($handler, ErrorHandler::register($newHandler, false));
             $h = set_error_handler('var_dump');
             restore_error_handler();
             $this->assertSame([$handler, 'handleError'], $h);
 
             try {
                 $this->assertSame($newHandler, ErrorHandler::register($newHandler, true));
                 $h = set_error_handler('var_dump');
                 restore_error_handler();
                 $this->assertSame([$newHandler, 'handleError'], $h);
             } catch (\Exception $e) {
             }
 
             restore_error_handler();
             restore_exception_handler();
 
             if (isset($e)) {
                 throw $e;
             }
         } catch (\Exception $e) {
         }
 
         restore_error_handler();
         restore_exception_handler();
 
         if (isset($e)) {
             throw $e;
         }
     }
 
     public function testErrorGetLast()
     {
         $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
         $handler = ErrorHandler::register();
         $handler->setDefaultLogger($logger);
         $handler->screamAt(E_ALL);
 
         try {
             @trigger_error('Hello', E_USER_WARNING);
             $expected = [
                 'type' => E_USER_WARNING,
                 'message' => 'Hello',
                 'file' => __FILE__,
                 'line' => __LINE__ - 5,
             ];
             $this->assertSame($expected, error_get_last());
         } catch (\Exception $e) {
             restore_error_handler();
             restore_exception_handler();
 
             throw $e;
         }
     }
 
     public function testNotice()
     {
         ErrorHandler::register();
 
         try {
             self::triggerNotice($this);
             $this->fail('ErrorException expected');
         } catch (\ErrorException $exception) {
             // if an exception is thrown, the test passed
             $this->assertEquals(E_NOTICE, $exception->getSeverity());
             $this->assertEquals(__FILE__, $exception->getFile());
             $this->assertRegExp('/^Notice: Undefined variable: (foo|bar)/', $exception->getMessage());
 
             $trace = $exception->getTrace();
 
             $this->assertEquals(__FILE__, $trace[0]['file']);
             $this->assertEquals(__CLASS__, $trace[0]['class']);
             $this->assertEquals('triggerNotice', $trace[0]['function']);
             $this->assertEquals('::', $trace[0]['type']);
 
             $this->assertEquals(__FILE__, $trace[0]['file']);
             $this->assertEquals(__CLASS__, $trace[1]['class']);
             $this->assertEquals(__FUNCTION__, $trace[1]['function']);
             $this->assertEquals('->', $trace[1]['type']);
         } finally {
             restore_error_handler();
             restore_exception_handler();
         }
     }
 
     // dummy function to test trace in error handler.
     private static function triggerNotice($that)
     {
         $that->assertSame('', $foo.$foo.$bar);
     }
 
     public function testConstruct()
     {
         try {
             $handler = ErrorHandler::register();
             $handler->throwAt(3, true);
             $this->assertEquals(3 | E_RECOVERABLE_ERROR | E_USER_ERROR, $handler->throwAt(0));
         } finally {
             restore_error_handler();
             restore_exception_handler();
         }
     }
 
     public function testDefaultLogger()
     {
         try {
             $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
             $handler = ErrorHandler::register();
 
             $handler->setDefaultLogger($logger, E_NOTICE);
             $handler->setDefaultLogger($logger, [E_USER_NOTICE => LogLevel::CRITICAL]);
 
             $loggers = [
                 E_DEPRECATED => [null, LogLevel::INFO],
                 E_USER_DEPRECATED => [null, LogLevel::INFO],
                 E_NOTICE => [$logger, LogLevel::WARNING],
                 E_USER_NOTICE => [$logger, LogLevel::CRITICAL],
                 E_STRICT => [null, LogLevel::WARNING],
                 E_WARNING => [null, LogLevel::WARNING],
                 E_USER_WARNING => [null, LogLevel::WARNING],
                 E_COMPILE_WARNING => [null, LogLevel::WARNING],
                 E_CORE_WARNING => [null, LogLevel::WARNING],
                 E_USER_ERROR => [null, LogLevel::CRITICAL],
                 E_RECOVERABLE_ERROR => [null, LogLevel::CRITICAL],
                 E_COMPILE_ERROR => [null, LogLevel::CRITICAL],
                 E_PARSE => [null, LogLevel::CRITICAL],
                 E_ERROR => [null, LogLevel::CRITICAL],
                 E_CORE_ERROR => [null, LogLevel::CRITICAL],
             ];
             $this->assertSame($loggers, $handler->setLoggers([]));
         } finally {
             restore_error_handler();
             restore_exception_handler();
         }
     }
 
     public function testHandleError()
     {
         try {
             $handler = ErrorHandler::register();
             $handler->throwAt(0, true);
             $this->assertFalse($handler->handleError(0, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
 
             $handler = ErrorHandler::register();
             $handler->throwAt(3, true);
             $this->assertFalse($handler->handleError(4, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
 
             $handler = ErrorHandler::register();
             $handler->throwAt(3, true);
             try {
                 $handler->handleError(4, 'foo', 'foo.php', 12, []);
             } catch (\ErrorException $e) {
                 $this->assertSame('Parse Error: foo', $e->getMessage());
                 $this->assertSame(4, $e->getSeverity());
                 $this->assertSame('foo.php', $e->getFile());
                 $this->assertSame(12, $e->getLine());
             }
 
             restore_error_handler();
             restore_exception_handler();
 
             $handler = ErrorHandler::register();
             $handler->throwAt(E_USER_DEPRECATED, true);
             $this->assertFalse($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
 
             $handler = ErrorHandler::register();
             $handler->throwAt(E_DEPRECATED, true);
             $this->assertFalse($handler->handleError(E_DEPRECATED, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
 
             $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
 
             $warnArgCheck = function ($logLevel, $message, $context) {
                 $this->assertEquals('info', $logLevel);
                 $this->assertEquals('User Deprecated: foo', $message);
                 $this->assertArrayHasKey('exception', $context);
                 $exception = $context['exception'];
                 $this->assertInstanceOf(\ErrorException::class, $exception);
                 $this->assertSame('User Deprecated: foo', $exception->getMessage());
                 $this->assertSame(E_USER_DEPRECATED, $exception->getSeverity());
             };
 
             $logger
                 ->expects($this->once())
                 ->method('log')
                 ->willReturnCallback($warnArgCheck)
             ;
 
             $handler = ErrorHandler::register();
             $handler->setDefaultLogger($logger, E_USER_DEPRECATED);
             $this->assertTrue($handler->handleError(E_USER_DEPRECATED, 'foo', 'foo.php', 12, []));
 
             restore_error_handler();
             restore_exception_handler();
 
             $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
 
             $line = null;
             $logArgCheck = function ($level, $message, $context) use (&$line) {
                 $this->assertEquals('Notice: Undefined variable: undefVar', $message);
                 $this->assertArrayHasKey('exception', $context);
                 $exception = $context['exception'];
                 $this->assertInstanceOf(SilencedErrorContext::class, $exception);
                 $this->assertSame(E_NOTICE, $exception->getSeverity());
                 $this->assertSame(__FILE__, $exception->getFile());
                 $this->assertSame($line, $exception->getLine());
                 $this->assertNotEmpty($exception->getTrace());
                 $this->assertSame(1, $exception->count);
             };
 
             $logger
                 ->expects($this->once())
                 ->method('log')
                 ->willReturnCallback($logArgCheck)
             ;
 
             $handler = ErrorHandler::register();
             $handler->setDefaultLogger($logger, E_NOTICE);
             $handler->screamAt(E_NOTICE);
             unset($undefVar);
             $line = __LINE__ + 1;
             @$undefVar++;
 
             restore_error_handler();
             restore_exception_handler();
         } catch (\Exception $e) {
             restore_error_handler();
             restore_exception_handler();
 
             throw $e;
         }
     }
 
     public function testHandleUserError()
     {
         try {
             $handler = ErrorHandler::register();
             $handler->throwAt(0, true);
 
             $e = null;
             $x = new \Exception('Foo');
 
             try {
                 $f = new Fixtures\ToStringThrower($x);
                 $f .= ''; // Trigger $f->__toString()
             } catch (\Exception $e) {
             }
 
             $this->assertSame($x, $e);
         } finally {
             restore_error_handler();
             restore_exception_handler();
         }
     }
 
     public function testHandleDeprecation()
     {
         $logArgCheck = function ($level, $message, $context) {
             $this->assertEquals(LogLevel::INFO, $level);
             $this->assertArrayHasKey('exception', $context);
             $exception = $context['exception'];
             $this->assertInstanceOf(\ErrorException::class, $exception);
             $this->assertSame('User Deprecated: Foo deprecation', $exception->getMessage());
         };
 
         $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
         $logger
             ->expects($this->once())
             ->method('log')
             ->willReturnCallback($logArgCheck)
         ;
 
         $handler = new ErrorHandler();
         $handler->setDefaultLogger($logger);
         @$handler->handleError(E_USER_DEPRECATED, 'Foo deprecation', __FILE__, __LINE__, []);
 
         restore_error_handler();
     }
 
     public function testHandleException()
     {
         try {
             $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
             $handler = ErrorHandler::register();
 
             $exception = new \Exception('foo');
 
             $logArgCheck = function ($level, $message, $context) {
                 $this->assertSame('Uncaught Exception: foo', $message);
                 $this->assertArrayHasKey('exception', $context);
                 $this->assertInstanceOf(\Exception::class, $context['exception']);
             };
 
             $logger
                 ->expects($this->exactly(2))
                 ->method('log')
                 ->willReturnCallback($logArgCheck)
             ;
 
             $handler->setDefaultLogger($logger, E_ERROR);
 
             try {
                 $handler->handleException($exception);
                 $this->fail('Exception expected');
             } catch (\Exception $e) {
                 $this->assertSame($exception, $e);
             }
 
             $handler->setExceptionHandler(function ($e) use ($exception) {
                 $this->assertSame($exception, $e);
             });
 
             $handler->handleException($exception);
         } finally {
             restore_error_handler();
             restore_exception_handler();
         }
     }
 
     public function testBootstrappingLogger()
     {
         $bootLogger = new BufferingLogger();
         $handler = new ErrorHandler($bootLogger);
 
         $loggers = [
             E_DEPRECATED => [$bootLogger, LogLevel::INFO],
             E_USER_DEPRECATED => [$bootLogger, LogLevel::INFO],
             E_NOTICE => [$bootLogger, LogLevel::WARNING],
             E_USER_NOTICE => [$bootLogger, LogLevel::WARNING],
             E_STRICT => [$bootLogger, LogLevel::WARNING],
             E_WARNING => [$bootLogger, LogLevel::WARNING],
             E_USER_WARNING => [$bootLogger, LogLevel::WARNING],
             E_COMPILE_WARNING => [$bootLogger, LogLevel::WARNING],
             E_CORE_WARNING => [$bootLogger, LogLevel::WARNING],
             E_USER_ERROR => [$bootLogger, LogLevel::CRITICAL],
             E_RECOVERABLE_ERROR => [$bootLogger, LogLevel::CRITICAL],
             E_COMPILE_ERROR => [$bootLogger, LogLevel::CRITICAL],
             E_PARSE => [$bootLogger, LogLevel::CRITICAL],
             E_ERROR => [$bootLogger, LogLevel::CRITICAL],
             E_CORE_ERROR => [$bootLogger, LogLevel::CRITICAL],
         ];
 
         $this->assertSame($loggers, $handler->setLoggers([]));
 
         $handler->handleError(E_DEPRECATED, 'Foo message', __FILE__, 123, []);
 
         $logs = $bootLogger->cleanLogs();
 
         $this->assertCount(1, $logs);
         $log = $logs[0];
         $this->assertSame('info', $log[0]);
         $this->assertSame('Deprecated: Foo message', $log[1]);
         $this->assertArrayHasKey('exception', $log[2]);
         $exception = $log[2]['exception'];
         $this->assertInstanceOf(\ErrorException::class, $exception);
         $this->assertSame('Deprecated: Foo message', $exception->getMessage());
         $this->assertSame(__FILE__, $exception->getFile());
         $this->assertSame(123, $exception->getLine());
         $this->assertSame(E_DEPRECATED, $exception->getSeverity());
 
         $bootLogger->log(LogLevel::WARNING, 'Foo message', ['exception' => $exception]);
 
         $mockLogger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
         $mockLogger->expects($this->once())
             ->method('log')
             ->with(LogLevel::WARNING, 'Foo message', ['exception' => $exception]);
 
         $handler->setLoggers([E_DEPRECATED => [$mockLogger, LogLevel::WARNING]]);
     }
 
     public function testSettingLoggerWhenExceptionIsBuffered()
     {
         $bootLogger = new BufferingLogger();
         $handler = new ErrorHandler($bootLogger);
 
         $exception = new \Exception('Foo message');
 
         $mockLogger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
         $mockLogger->expects($this->once())
             ->method('log')
             ->with(LogLevel::CRITICAL, 'Uncaught Exception: Foo message', ['exception' => $exception]);
 
         $handler->setExceptionHandler(function () use ($handler, $mockLogger) {
             $handler->setDefaultLogger($mockLogger);
         });
 
         $handler->handleException($exception);
     }
 
     public function testHandleFatalError()
     {
         try {
             $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
             $handler = ErrorHandler::register();
 
             $error = [
                 'type' => E_PARSE,
                 'message' => 'foo',
                 'file' => 'bar',
                 'line' => 123,
             ];
 
             $logArgCheck = function ($level, $message, $context) {
                 $this->assertEquals('Fatal Parse Error: foo', $message);
                 $this->assertArrayHasKey('exception', $context);
                 $this->assertInstanceOf(\Exception::class, $context['exception']);
             };
 
             $logger
                 ->expects($this->once())
                 ->method('log')
                 ->willReturnCallback($logArgCheck)
             ;
 
             $handler->setDefaultLogger($logger, E_PARSE);
 
             $handler->handleFatalError($error);
 
             restore_error_handler();
             restore_exception_handler();
         } catch (\Exception $e) {
             restore_error_handler();
             restore_exception_handler();
 
             throw $e;
         }
     }
 
     public function testHandleErrorException()
     {
         $exception = new \Error("Class 'IReallyReallyDoNotExistAnywhereInTheRepositoryISwear' not found");
 
         $handler = new ErrorHandler();
         $handler->setExceptionHandler(function () use (&$args) {
             $args = \func_get_args();
         });
 
         $handler->handleException($exception);
 
         $this->assertInstanceOf('Symfony\Component\Debug\Exception\ClassNotFoundException', $args[0]);
         $this->assertStringStartsWith("Attempted to load class \"IReallyReallyDoNotExistAnywhereInTheRepositoryISwear\" from the global namespace.\nDid you forget a \"use\" statement", $args[0]->getMessage());
     }
 
     /**
      * @expectedException \Exception
      */
     public function testCustomExceptionHandler()
     {
         $handler = new ErrorHandler();
         $handler->setExceptionHandler(function ($e) use ($handler) {
             $handler->handleException($e);
         });
 
         $handler->handleException(new \Exception());
     }
 
     /**
      * @dataProvider errorHandlerWhenLoggingProvider
      */
     public function testErrorHandlerWhenLogging($previousHandlerWasDefined, $loggerSetsAnotherHandler, $nextHandlerIsDefined)
     {
         try {
             if ($previousHandlerWasDefined) {
                 set_error_handler('count');
             }
 
             $logger = $loggerSetsAnotherHandler ? new LoggerThatSetAnErrorHandler() : new NullLogger();
 
             $handler = ErrorHandler::register();
             $handler->setDefaultLogger($logger);
 
             if ($nextHandlerIsDefined) {
                 $handler = ErrorHandlerThatUsesThePreviousOne::register();
             }
 
             @trigger_error('foo', E_USER_DEPRECATED);
             @trigger_error('bar', E_USER_DEPRECATED);
 
             $this->assertSame([$handler, 'handleError'], set_error_handler('var_dump'));
 
             if ($logger instanceof LoggerThatSetAnErrorHandler) {
                 $this->assertCount(2, $logger->cleanLogs());
             }
 
             restore_error_handler();
 
             if ($previousHandlerWasDefined) {
                 restore_error_handler();
             }
 
             if ($nextHandlerIsDefined) {
                 restore_error_handler();
             }
         } finally {
             restore_error_handler();
             restore_exception_handler();
         }
     }
 
     public function errorHandlerWhenLoggingProvider()
     {
         foreach ([false, true] as $previousHandlerWasDefined) {
             foreach ([false, true] as $loggerSetsAnotherHandler) {
                 foreach ([false, true] as $nextHandlerIsDefined) {
                     yield [$previousHandlerWasDefined, $loggerSetsAnotherHandler, $nextHandlerIsDefined];
                 }
             }
         }
     }
 }