FileLogTest.php

<?php
/**
 * FileLogTest file
 *
 * PHP 5
 *
 * CakePHP(tm) Tests <http://book.cakephp.org/2.0/en/development/testing.html>
 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://book.cakephp.org/2.0/en/development/testing.html CakePHP(tm) Tests
 * @package       Cake.Test.Case.Log.Engine
 * @since         CakePHP(tm) v 1.3
 * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
 */
App::uses('FileLog', 'Log/Engine');

/**
 * CakeLogTest class
 *
 * @package       Cake.Test.Case.Log.Engine
 */
class FileLogTest extends CakeTestCase {

/**
 * testLogFileWriting method
 *
 * @return void
 */
	public function testLogFileWriting() {
		$this->_deleteLogs(LOGS);

		$log = new FileLog();
		$log->write('warning', 'Test warning');
		$this->assertTrue(file_exists(LOGS . 'error.log'));

		$result = file_get_contents(LOGS . 'error.log');
		$this->assertRegExp('/^2[0-9]{3}-[0-9]+-[0-9]+ [0-9]+:[0-9]+:[0-9]+ Warning: Test warning/', $result);

		$log->write('debug', 'Test warning');
		$this->assertTrue(file_exists(LOGS . 'debug.log'));

		$result = file_get_contents(LOGS . 'debug.log');
		$this->assertRegExp('/^2[0-9]{3}-[0-9]+-[0-9]+ [0-9]+:[0-9]+:[0-9]+ Debug: Test warning/', $result);

		$log->write('random', 'Test warning');
		$this->assertTrue(file_exists(LOGS . 'random.log'));

		$result = file_get_contents(LOGS . 'random.log');
		$this->assertRegExp('/^2[0-9]{3}-[0-9]+-[0-9]+ [0-9]+:[0-9]+:[0-9]+ Random: Test warning/', $result);
	}

/**
 * test using the path setting to write logs in other places.
 *
 * @return void
 */
	public function testPathSetting() {
		$path = TMP . 'tests' . DS;
		$this->_deleteLogs($path);

		$log = new FileLog(compact('path'));
		$log->write('warning', 'Test warning');
		$this->assertTrue(file_exists($path . 'error.log'));
	}

/**
 * test log rotation
 *
 * @return void
 */
	public function testRotation() {
		$path = TMP . 'tests' . DS;
		$this->_deleteLogs($path);

		file_put_contents($path . 'error.log', "this text is under 35 bytes\n");
		$log = new FileLog(array(
			'path' => $path,
			'size' => 35,
			'rotate' => 2
		));
		$log->write('warning', 'Test warning one');
		$this->assertTrue(file_exists($path . 'error.log'));

		$result = file_get_contents($path . 'error.log');
		$this->assertRegExp('/Warning: Test warning one/', $result);
		$this->assertEquals(0, count(glob($path . 'error.log.*')));

		clearstatcache();
		$log->write('warning', 'Test warning second');

		$files = glob($path . 'error.log.*');
		$this->assertEquals(1, count($files));

		$result = file_get_contents($files[0]);
		$this->assertRegExp('/this text is under 35 bytes/', $result);
		$this->assertRegExp('/Warning: Test warning one/', $result);

		sleep(1);
		clearstatcache();
		$log->write('warning', 'Test warning third');

		$result = file_get_contents($path . 'error.log');
		$this->assertRegExp('/Warning: Test warning third/', $result);

		$files = glob($path . 'error.log.*');
		$this->assertEquals(2, count($files));

		$result = file_get_contents($files[0]);
		$this->assertRegExp('/this text is under 35 bytes/', $result);

		$result = file_get_contents($files[1]);
		$this->assertRegExp('/Warning: Test warning second/', $result);

		sleep(1);
		clearstatcache();
		$log->write('warning', 'Test warning fourth');

		// rotate count reached so file count should not increase
		$files = glob($path . 'error.log.*');
		$this->assertEquals(2, count($files));

		$result = file_get_contents($path . 'error.log');
		$this->assertRegExp('/Warning: Test warning fourth/', $result);

		$result = file_get_contents(array_pop($files));
		$this->assertRegExp('/Warning: Test warning third/', $result);

		$result = file_get_contents(array_pop($files));
		$this->assertRegExp('/Warning: Test warning second/', $result);

		file_put_contents($path . 'debug.log', "this text is just greater than 35 bytes\n");
		$log = new FileLog(array(
			'path' => $path,
			'size' => 35,
			'rotate' => 0
		));
		$log->write('debug', 'Test debug');
		$this->assertTrue(file_exists($path . 'debug.log'));

		$result = file_get_contents($path . 'debug.log');
		$this->assertRegExp('/^2[0-9]{3}-[0-9]+-[0-9]+ [0-9]+:[0-9]+:[0-9]+ Debug: Test debug/', $result);
		$this->assertFalse(strstr($result, 'greater than 5 bytes'));
		$this->assertEquals(0, count(glob($path . 'debug.log.*')));
	}

/**
 * helper function to clears all log files in specified directory
 *
 * @return void
 */
	protected function _deleteLogs($dir) {
		$files = array_merge(glob($dir . '*.log'), glob($dir . '*.log.*'));
		foreach ($files as $file) {
			unlink($file);
		}
	}

}