/**
* Internal step definition to find exceptions, debugging() messages and PHP debug messages.
*
* Part of behat_hooks class as is part of the testing framework, is auto-executed
* after each step so no features will splicitly use it.
*
* @throws Exception Unknown type, depending on what we caught in the hook or basic \Exception.
* @see Moodle\BehatExtension\Tester\MoodleStepTester
*/
public function look_for_exceptions()
{
// Wrap in try in case we were interacting with a closed window.
try {
// Exceptions.
$exceptionsxpath = "//div[@data-rel='fatalerror']";
// Debugging messages.
$debuggingxpath = "//div[@data-rel='debugging']";
// PHP debug messages.
$phperrorxpath = "//div[@data-rel='phpdebugmessage']";
// Any other backtrace.
$othersxpath = "(//*[contains(., ': call to ')])[1]";
$xpaths = array($exceptionsxpath, $debuggingxpath, $phperrorxpath, $othersxpath);
$joinedxpath = implode(' | ', $xpaths);
// Joined xpath expression. Most of the time there will be no exceptions, so this pre-check
// is faster than to send the 4 xpath queries for each step.
if (!$this->getSession()->getDriver()->find($joinedxpath)) {
// Check if we have recorded any errors in driver process.
$phperrors = behat_get_shutdown_process_errors();
if (!empty($phperrors)) {
foreach ($phperrors as $error) {
$errnostring = behat_get_error_string($error['type']);
$msgs[] = $errnostring . ": " . $error['message'] . " at " . $error['file'] . ": " . $error['line'];
}
$msg = "PHP errors found:\n" . implode("\n", $msgs);
throw new \Exception(htmlentities($msg));
}
return;
}
// Exceptions.
if ($errormsg = $this->getSession()->getPage()->find('xpath', $exceptionsxpath)) {
// Getting the debugging info and the backtrace.
$errorinfoboxes = $this->getSession()->getPage()->findAll('css', 'div.alert-error');
// If errorinfoboxes is empty, try find alert-danger (bootstrap4) class.
if (empty($errorinfoboxes)) {
$errorinfoboxes = $this->getSession()->getPage()->findAll('css', 'div.alert-danger');
}
// If errorinfoboxes is empty, try find notifytiny (original) class.
if (empty($errorinfoboxes)) {
$errorinfoboxes = $this->getSession()->getPage()->findAll('css', 'div.notifytiny');
}
// If errorinfoboxes is empty, try find ajax/JS exception in dialogue.
if (empty($errorinfoboxes)) {
$errorinfoboxes = $this->getSession()->getPage()->findAll('css', 'div.moodle-exception-message');
// If ajax/JS exception.
if ($errorinfoboxes) {
$errorinfo = $this->get_debug_text($errorinfoboxes[0]->getHtml());
}
} else {
$errorinfo = $this->get_debug_text($errorinfoboxes[0]->getHtml()) . "\n" . $this->get_debug_text($errorinfoboxes[1]->getHtml());
}
$msg = "Moodle exception: " . $errormsg->getText() . "\n" . $errorinfo;
throw new \Exception(html_entity_decode($msg));
}
// Debugging messages.
if ($debuggingmessages = $this->getSession()->getPage()->findAll('xpath', $debuggingxpath)) {
$msgs = array();
foreach ($debuggingmessages as $debuggingmessage) {
$msgs[] = $this->get_debug_text($debuggingmessage->getHtml());
}
$msg = "debugging() message/s found:\n" . implode("\n", $msgs);
throw new \Exception(html_entity_decode($msg));
}
// PHP debug messages.
if ($phpmessages = $this->getSession()->getPage()->findAll('xpath', $phperrorxpath)) {
$msgs = array();
foreach ($phpmessages as $phpmessage) {
$msgs[] = $this->get_debug_text($phpmessage->getHtml());
}
$msg = "PHP debug message/s found:\n" . implode("\n", $msgs);
throw new \Exception(html_entity_decode($msg));
}
// Any other backtrace.
// First looking through xpath as it is faster than get and parse the whole page contents,
// we get the contents and look for matches once we found something to suspect that there is a backtrace.
if ($this->getSession()->getDriver()->find($othersxpath)) {
$backtracespattern = '/(line [0-9]* of [^:]*: call to [\\->&;:a-zA-Z_\\x7f-\\xff][\\->&;:a-zA-Z0-9_\\x7f-\\xff]*)/';
if (preg_match_all($backtracespattern, $this->getSession()->getPage()->getContent(), $backtraces)) {
$msgs = array();
foreach ($backtraces[0] as $backtrace) {
$msgs[] = $backtrace . '()';
}
$msg = "Other backtraces found:\n" . implode("\n", $msgs);
throw new \Exception(htmlentities($msg));
}
}
} catch (NoSuchWindow $e) {
// If we were interacting with a popup window it will not exists after closing it.
}
}
/**
* PHP errors handler to use when running behat tests.
*
* Adds specific CSS classes to identify
* the messages.
*
* @param int $errno
* @param string $errstr
* @param string $errfile
* @param int $errline
* @param array $errcontext
* @return bool
*/
function behat_error_handler($errno, $errstr, $errfile, $errline, $errcontext) {
// If is preceded by an @ we don't show it.
if (!error_reporting()) {
return true;
}
// This error handler receives E_ALL | E_STRICT, running the behat test site the debug level is
// set to DEVELOPER and will always include E_NOTICE,E_USER_NOTICE... as part of E_ALL, if the current
// error_reporting() value does not include one of those levels is because it has been forced through
// the moodle code (see fix_utf8() for example) in that cases we respect the forced error level value.
$respect = array(E_NOTICE, E_USER_NOTICE, E_STRICT, E_WARNING, E_USER_WARNING);
foreach ($respect as $respectable) {
// If the current value does not include this kind of errors and the reported error is
// at that level don't print anything.
if ($errno == $respectable && !(error_reporting() & $respectable)) {
return true;
}
}
// Using the default one in case there is a fatal catchable error.
default_error_handler($errno, $errstr, $errfile, $errline, $errcontext);
$errnostr = behat_get_error_string($errno);
// If ajax script then throw exception, so the calling api catch it and show it on web page.
if (defined('AJAX_SCRIPT')) {
throw new Exception("$errnostr: $errstr in $errfile on line $errline");
} else {
// Wrapping the output.
echo '<div class="phpdebugmessage" data-rel="phpdebugmessage">' . PHP_EOL;
echo "$errnostr: $errstr in $errfile on line $errline" . PHP_EOL;
echo '</div>';
}
// Also use the internal error handler so we keep the usual behaviour.
return false;
}
