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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