Differential D20980 Diff 49996 src/error/__tests__/PhutilErrorHandlerTestCase.php

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				<?php

				final class PhutilErrorHandlerTestCase extends PhutilTestCase {

				public function testProxyException() {
				$a = new Exception('a');
				$b = new PhutilProxyException('b', $a);
				$c = new PhutilProxyException('c', $b);

				$this->assertEqual($a, $b->getPrevious());
				$this->assertEqual($a, PhutilErrorHandler::getRootException($b));
				$this->assertEqual($a, PhutilErrorHandler::getPreviousException($b));

				$this->assertEqual($a, PhutilErrorHandler::getRootException($c));
				$this->assertEqual($b, PhutilErrorHandler::getPreviousException($c));
				}

				public function testSilenceHandler() {
				// Errors should normally be logged.
				$this->assertTrue(strlen($this->emitError()) > 0);

				// The "@" operator should silence errors.
				$this->assertTrue(@strlen($this->emitError()) === 0);
				}

				private function emitError() {
				$temporary_log = new TempFile();

				$old_log = ini_get('error_log');
				ini_set('error_log', (string)$temporary_log);

				trigger_error(pht('(A synthetic error emitted during a unit test.)'));

				ini_set('error_log', $old_log);
				return Filesystem::readFile($temporary_log);
				}


				}