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<?php |
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declare(strict_types=1); |
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namespace Jasny\PHPUnit\Util; |
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/** |
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* Error handler for expected warnings and notices. |
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*/ |
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final class ExpectedWarnings |
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{ |
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private const TYPES = [ |
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\E_NOTICE => 'notice', |
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\E_USER_NOTICE => 'notice', |
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\E_STRICT => 'notice', |
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\E_WARNING => 'warning', |
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\E_USER_WARNING => 'warning', |
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\E_DEPRECATED => 'deprecation', |
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\E_USER_DEPRECATED => 'deprecation', |
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]; |
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/** |
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* @var bool |
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*/ |
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private $registered = false; |
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/** |
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* @var callable |
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*/ |
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private $oldErrorHandler; |
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/** |
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* @var array |
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*/ |
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private $expected = []; |
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/** |
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* Destructor. Automatically unregister. |
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*/ |
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public function __destruct() |
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{ |
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$this->unregister(); |
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} |
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/** |
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* Add an expected error. |
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*/ |
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public function add(string $type, string $message = ''): void |
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{ |
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$this->expected[] = ['type' => $type, 'message' => $message, 'triggered' => false]; |
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} |
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/** |
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* Add an expected error with regexp message. |
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*/ |
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public function addRegExp(string $type, string $regexp): void |
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{ |
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$this->expected[] = ['type' => $type, 'regexp' => $regexp, 'triggered' => false]; |
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} |
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/** |
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* Check if all expected error matches given error. |
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*/ |
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private function expectedMatches(array $expected, string $type, string $message): bool |
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{ |
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if ($expected['type'] !== $type || $expected['triggered']) { |
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return false; |
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} |
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return isset($expected['message']) // either 'message' or 'regexp' is set |
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? ($expected['message'] === '' || strpos($expected['message'], $message) !== false) |
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: (bool)preg_match($expected['regexp'], $message); |
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} |
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/** |
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* Mark an error as triggered. |
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* Returns false if there's no expected error that matches. |
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*/ |
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private function markTriggered(string $type, string $message): bool |
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{ |
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foreach ($this->expected as &$expected) { |
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if ($this->expectedMatches($expected, $type, $message)) { |
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$expected['triggered'] = true; |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Get all expected errors that weren't triggered. |
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*/ |
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public function getNotTriggered(): array |
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{ |
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return array_filter($this->expected, function (array $expected): bool { |
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return !$expected['triggered']; |
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}); |
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} |
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/** |
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* Invoke the error handler. |
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*/ |
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public function __invoke(int $errorNumber, string $errorString, string $errorFile, int $errorLine): ?bool |
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{ |
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if (isset(self::TYPES[$errorNumber]) && $this->markTriggered(self::TYPES[$errorNumber], $errorString)) { |
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return true; |
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} |
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return ($this->oldErrorHandler)($errorNumber, $errorString, $errorFile, $errorLine); |
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} |
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/** |
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* Register as error handler. |
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*/ |
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public function register(): void |
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{ |
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if ($this->registered) { |
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return; // @codeCoverageIgnore |
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} |
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$this->oldErrorHandler = \set_error_handler($this); |
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$this->registered = true; |
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} |
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/** |
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* Restore old error handler. |
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*/ |
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public function unregister(): void |
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{ |
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if (!$this->registered) { |
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return; // @codeCoverageIgnore |
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} |
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\restore_error_handler(); |
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$this->registered = false; |
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unset($this->oldErrorHandler); |
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} |
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/** |
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* @internal |
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*/ |
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public static function describeExpected(array $expected): string |
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{ |
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if (isset($expected['regexp'])) { |
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return \sprintf('%s with message matching "%s"', $expected['type'], $expected['regexp']); |
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} |
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return $expected['message'] === '' |
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? $expected['type'] |
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: \sprintf('%s with message "%s"', $expected['type'], $expected['message']); |
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} |
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} |
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