testing

PhabricatorTestStorageEngine.php
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			<?php

			/**
			* Test storage engine. Does not actually store files. Used for unit tests.
			*/
			final class PhabricatorTestStorageEngine
			extends PhabricatorFileStorageEngine {

			private static $storage = array();
			private static $nextHandle = 1;

			public function getEngineIdentifier() {
			return 'unit-test';
			}

			public function getEnginePriority() {
			return 1000;
			}

			public function isTestEngine() {
			return true;
			}

			public function canWriteFiles() {
			return true;
			}

			public function hasFilesizeLimit() {
			return false;
			}

			public function writeFile($data, array $params) {
			AphrontWriteGuard::willWrite();
			self::$storage[self::$nextHandle] = $data;
			return (string)self::$nextHandle++;
			}

			public function readFile($handle) {
			if (isset(self::$storage[$handle])) {
			return self::$storage[$handle];
			}
			throw new Exception(pht("No such file with handle '%s'!", $handle));
			}

			public function deleteFile($handle) {
			AphrontWriteGuard::willWrite();
			unset(self::$storage[$handle]);
			}

			}