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Diffstat (limited to 'vendors/simpletest/exceptions.php')
| -rw-r--r-- | vendors/simpletest/exceptions.php | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/vendors/simpletest/exceptions.php b/vendors/simpletest/exceptions.php new file mode 100644 index 000000000..c19a04e3a --- /dev/null +++ b/vendors/simpletest/exceptions.php @@ -0,0 +1,198 @@ +<?php +/** + * base include file for SimpleTest + * @package SimpleTest + * @subpackage UnitTester + * @version $Id: exceptions.php 1672 2008-03-02 04:47:34Z edwardzyang $ + */ + +/**#@+ + * Include required SimpleTest files + */ +require_once dirname(__FILE__) . '/invoker.php'; +require_once dirname(__FILE__) . '/expectation.php'; +/**#@-*/ + +/** + * Extension that traps exceptions and turns them into + * an error message. PHP5 only. + * @package SimpleTest + * @subpackage UnitTester + */ +class SimpleExceptionTrappingInvoker extends SimpleInvokerDecorator { + + /** + * Stores the invoker to be wrapped. + * @param SimpleInvoker $invoker Test method runner. + */ + function SimpleExceptionTrappingInvoker($invoker) { + $this->SimpleInvokerDecorator($invoker); + } + + /** + * Invokes a test method whilst trapping expected + * exceptions. Any left over unthrown exceptions + * are then reported as failures. + * @param string $method Test method to call. + */ + function invoke($method) { + $trap = SimpleTest::getContext()->get('SimpleExceptionTrap'); + $trap->clear(); + try { + $has_thrown = false; + parent::invoke($method); + } catch (Exception $exception) { + $has_thrown = true; + if (! $trap->isExpected($this->getTestCase(), $exception)) { + $this->getTestCase()->exception($exception); + } + $trap->clear(); + } + if ($message = $trap->getOutstanding()) { + $this->getTestCase()->fail($message); + } + if ($has_thrown) { + try { + parent::getTestCase()->tearDown(); + } catch (Exception $e) { } + } + } +} + +/** + * Tests exceptions either by type or the exact + * exception. This could be improved to accept + * a pattern expectation to test the error + * message, but that will have to come later. + * @package SimpleTest + * @subpackage UnitTester + */ +class ExceptionExpectation extends SimpleExpectation { + private $expected; + + /** + * Sets up the conditions to test against. + * If the expected value is a string, then + * it will act as a test of the class name. + * An exception as the comparison will + * trigger an identical match. Writing this + * down now makes it look doubly dumb. I hope + * come up with a better scheme later. + * @param mixed $expected A class name or an actual + * exception to compare with. + * @param string $message Message to display. + */ + function __construct($expected, $message = '%s') { + $this->expected = $expected; + parent::__construct($message); + } + + /** + * Carry out the test. + * @param Exception $compare Value to check. + * @return boolean True if matched. + */ + function test($compare) { + if (is_string($this->expected)) { + return ($compare instanceof $this->expected); + } + if (get_class($compare) != get_class($this->expected)) { + return false; + } + return $compare->getMessage() == $this->expected->getMessage(); + } + + /** + * Create the message to display describing the test. + * @param Exception $compare Exception to match. + * @return string Final message. + */ + function testMessage($compare) { + if (is_string($this->expected)) { + return "Exception [" . $this->describeException($compare) . + "] should be type [" . $this->expected . "]"; + } + return "Exception [" . $this->describeException($compare) . + "] should match [" . + $this->describeException($this->expected) . "]"; + } + + /** + * Summary of an Exception object. + * @param Exception $compare Exception to describe. + * @return string Text description. + */ + protected function describeException($exception) { + return get_class($exception) . ": " . $exception->getMessage(); + } +} + +/** + * Stores expected exceptions for when they + * get thrown. Saves the irritating try...catch + * block. + * @package SimpleTest + * @subpackage UnitTester + */ +class SimpleExceptionTrap { + private $expected; + private $message; + + /** + * Clears down the queue ready for action. + */ + function __construct() { + $this->clear(); + } + + /** + * Sets up an expectation of an exception. + * This has the effect of intercepting an + * exception that matches. + * @param SimpleExpectation $expected Expected exception to match. + * @param string $message Message to display. + * @access public + */ + function expectException($expected = false, $message = '%s') { + if ($expected === false) { + $expected = new AnythingExpectation(); + } + if (! SimpleExpectation::isExpectation($expected)) { + $expected = new ExceptionExpectation($expected); + } + $this->expected = $expected; + $this->message = $message; + } + + /** + * Compares the expected exception with any + * in the queue. Issues a pass or fail and + * returns the state of the test. + * @param SimpleTestCase $test Test case to send messages to. + * @param Exception $exception Exception to compare. + * @return boolean False on no match. + */ + function isExpected($test, $exception) { + if ($this->expected) { + return $test->assert($this->expected, $exception, $this->message); + } + return false; + } + + /** + * Tests for any left over exception. + * @return string/false The failure message or false if none. + */ + function getOutstanding() { + return sprintf($this->message, 'Failed to trap exception'); + } + + /** + * Discards the contents of the error queue. + */ + function clear() { + $this->expected = false; + $this->message = false; + } +} +?>
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