267 lines
		
	
	
		
			8.7 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			267 lines
		
	
	
		
			8.7 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/**
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 *  base include file for SimpleTest
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 *  @package    SimpleTest
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 *  @subpackage UnitTester
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 *  @version    $Id: errors.php 2011 2011-04-29 08:22:48Z pp11 $
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 */
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/**#@+
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 * Includes SimpleTest files.
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 */
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require_once dirname(__FILE__) . '/invoker.php';
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require_once dirname(__FILE__) . '/test_case.php';
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require_once dirname(__FILE__) . '/expectation.php';
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/**#@-*/
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/**
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 *    Extension that traps errors into an error queue.
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 *    @package SimpleTest
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 *    @subpackage UnitTester
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 */
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class SimpleErrorTrappingInvoker extends SimpleInvokerDecorator {
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    /**
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     *    Stores the invoker to wrap.
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     *    @param SimpleInvoker $invoker  Test method runner.
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     */
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    function __construct($invoker) {
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        parent::__construct($invoker);
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    }
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    /**
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     *    Invokes a test method and dispatches any
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     *    untrapped errors. Called back from
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     *    the visiting runner.
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     *    @param string $method    Test method to call.
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     *    @access public
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     */
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    function invoke($method) {
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        $queue = $this->createErrorQueue();
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        set_error_handler('SimpleTestErrorHandler');
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        parent::invoke($method);
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        restore_error_handler();
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        $queue->tally();
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    }
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    /**
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     *    Wires up the error queue for a single test.
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     *    @return SimpleErrorQueue    Queue connected to the test.
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     *    @access private
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     */
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    protected function createErrorQueue() {
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        $context = SimpleTest::getContext();
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        $test = $this->getTestCase();
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        $queue = $context->get('SimpleErrorQueue');
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        $queue->setTestCase($test);
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        return $queue;
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    }
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}
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/**
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 *    Error queue used to record trapped
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 *    errors.
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 *    @package  SimpleTest
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 *    @subpackage   UnitTester
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 */
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class SimpleErrorQueue {
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    private $queue;
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    private $expectation_queue;
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    private $test;
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    private $using_expect_style = false;
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    /**
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     *    Starts with an empty queue.
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     */
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    function __construct() {
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        $this->clear();
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    }
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    /**
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     *    Discards the contents of the error queue.
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     *    @access public
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     */
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    function clear() {
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        $this->queue = array();
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        $this->expectation_queue = array();
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    }
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    /**
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     *    Sets the currently running test case.
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     *    @param SimpleTestCase $test    Test case to send messages to.
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     *    @access public
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     */
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    function setTestCase($test) {
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        $this->test = $test;
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    }
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    /**
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     *    Sets up an expectation of an error. If this is
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     *    not fulfilled at the end of the test, a failure
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     *    will occour. If the error does happen, then this
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     *    will cancel it out and send a pass message.
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     *    @param SimpleExpectation $expected    Expected error match.
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     *    @param string $message                Message to display.
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     *    @access public
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     */
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    function expectError($expected, $message) {
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        array_push($this->expectation_queue, array($expected, $message));
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    }
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    /**
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     *    Adds an error to the front of the queue.
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     *    @param integer $severity       PHP error code.
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     *    @param string $content         Text of error.
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     *    @param string $filename        File error occoured in.
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     *    @param integer $line           Line number of error.
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     *    @access public
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     */
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    function add($severity, $content, $filename, $line) {
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        $content = str_replace('%', '%%', $content);
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        $this->testLatestError($severity, $content, $filename, $line);
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    }
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    /**
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     *    Any errors still in the queue are sent to the test
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     *    case. Any unfulfilled expectations trigger failures.
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     *    @access public
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     */
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    function tally() {
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        while (list($severity, $message, $file, $line) = $this->extract()) {
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            $severity = $this->getSeverityAsString($severity);
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            $this->test->error($severity, $message, $file, $line);
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        }
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        while (list($expected, $message) = $this->extractExpectation()) {
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            $this->test->assert($expected, false, "%s -> Expected error not caught");
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        }
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    }
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    /**
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     *    Tests the error against the most recent expected
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     *    error.
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     *    @param integer $severity       PHP error code.
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     *    @param string $content         Text of error.
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     *    @param string $filename        File error occoured in.
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     *    @param integer $line           Line number of error.
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     *    @access private
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     */
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    protected function testLatestError($severity, $content, $filename, $line) {
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        if ($expectation = $this->extractExpectation()) {
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            list($expected, $message) = $expectation;
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            $this->test->assert($expected, $content, sprintf(
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                    $message,
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                    "%s -> PHP error [$content] severity [" .
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                            $this->getSeverityAsString($severity) .
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                            "] in [$filename] line [$line]"));
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        } else {
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            $this->test->error($severity, $content, $filename, $line);
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        }
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    }
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    /**
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     *    Pulls the earliest error from the queue.
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     *    @return  mixed    False if none, or a list of error
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     *                      information. Elements are: severity
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     *                      as the PHP error code, the error message,
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     *                      the file with the error, the line number
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     *                      and a list of PHP super global arrays.
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     *    @access public
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     */
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    function extract() {
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        if (count($this->queue)) {
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            return array_shift($this->queue);
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        }
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        return false;
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    }
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    /**
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     *    Pulls the earliest expectation from the queue.
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     *    @return     SimpleExpectation    False if none.
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     *    @access private
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     */
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    protected function extractExpectation() {
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        if (count($this->expectation_queue)) {
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            return array_shift($this->expectation_queue);
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        }
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        return false;
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    }
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    /**
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     *    Converts an error code into it's string
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     *    representation.
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     *    @param $severity  PHP integer error code.
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     *    @return           String version of error code.
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     *    @access public
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     */
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    static function getSeverityAsString($severity) {
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        static $map = array(
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                E_STRICT => 'E_STRICT',
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                E_ERROR => 'E_ERROR',
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                E_WARNING => 'E_WARNING',
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                E_PARSE => 'E_PARSE',
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                E_NOTICE => 'E_NOTICE',
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                E_CORE_ERROR => 'E_CORE_ERROR',
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                E_CORE_WARNING => 'E_CORE_WARNING',
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                E_COMPILE_ERROR => 'E_COMPILE_ERROR',
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                E_COMPILE_WARNING => 'E_COMPILE_WARNING',
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                E_USER_ERROR => 'E_USER_ERROR',
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                E_USER_WARNING => 'E_USER_WARNING',
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                E_USER_NOTICE => 'E_USER_NOTICE');
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        if (defined('E_RECOVERABLE_ERROR')) {
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            $map[E_RECOVERABLE_ERROR] = 'E_RECOVERABLE_ERROR';
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        }
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        if (defined('E_DEPRECATED')) {
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            $map[E_DEPRECATED] = 'E_DEPRECATED';
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        }
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        return $map[$severity];
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    }
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}
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/**
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 *    Error handler that simply stashes any errors into the global
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 *    error queue. Simulates the existing behaviour with respect to
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 *    logging errors, but this feature may be removed in future.
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 *    @param $severity        PHP error code.
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 *    @param $message         Text of error.
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 *    @param $filename        File error occoured in.
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 *    @param $line            Line number of error.
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 *    @param $super_globals   Hash of PHP super global arrays.
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 *    @access public
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 */
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function SimpleTestErrorHandler($severity, $message, $filename = null, $line = null, $super_globals = null, $mask = null) {
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    $severity = $severity & error_reporting();
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    if ($severity) {
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        restore_error_handler();
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        if (IsNotCausedBySimpleTest($message) && IsNotTimeZoneNag($message)) {
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            if (ini_get('log_errors')) {
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                $label = SimpleErrorQueue::getSeverityAsString($severity);
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                error_log("$label: $message in $filename on line $line");
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            }
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            $queue = SimpleTest::getContext()->get('SimpleErrorQueue');
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            $queue->add($severity, $message, $filename, $line);
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        }
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        set_error_handler('SimpleTestErrorHandler');
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    }
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    return true;
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}
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/**
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 *  Certain messages can be caused by the unit tester itself.
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 *  These have to be filtered.
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 *  @param string $message      Message to filter.
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 *  @return boolean             True if genuine failure.
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 */
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function IsNotCausedBySimpleTest($message) {
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    return ! preg_match('/returned by reference/', $message);
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}
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/**
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 *  Certain messages caused by PHP are just noise.
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 *  These have to be filtered.
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 *  @param string $message      Message to filter.
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 *  @return boolean             True if genuine failure.
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 */
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function IsNotTimeZoneNag($message) {
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    return ! preg_match('/not safe to rely .* timezone settings/', $message);
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}
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?>
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