<?php
/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * @category   tests   
 * @package    log4php
 * @subpackage filters
 * @license    http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
 * @link       http://logging.apache.org/log4php
 */

/**
 * @group filters
 */
class LoggerFilterLevelMatchTest extends PHPUnit_Framework_TestCase {

	/** 
	 * Tests all possible combinations of event level and filter levelToMatch 
	 * option, with acceptOnMatch set to TRUE. 
	 */
	public function testDecideAccept() {
		$filter = new LoggerFilterLevelMatch();
		$filter->setAcceptOnMatch("true");
		
		$levels = LoggerTestHelper::getAllLevels();
		$events = LoggerTestHelper::getAllEvents();
		
		foreach($levels as $level) {
			$filter->setLevelToMatch($level);
			
			foreach($events as $event) {
				// Expecting given level to be accepted, neutral for others
				$expected = ($event->getLevel() == $level) ? LoggerFilter::ACCEPT : LoggerFilter::NEUTRAL;
				$actual = $filter->decide($event);
					
				// Get string represenations for logging
				$sExpected = LoggerTestHelper::decisionToString($expected);
				$sActual = LoggerTestHelper::decisionToString($actual);
				
				$this->assertSame($expected, $actual, "Failed asserting filter decision for event level <$level>. Expected <$sExpected>, found <$sActual>.");
			}
		}
	}
	
	/**
	 * Tests all possible combinations of event level and filter levelToMatch
	 * option, with acceptOnMatch set to TRUE.
	 */
	public function testDecideDeny() {
		$filter = new LoggerFilterLevelMatch();
		$filter->setAcceptOnMatch("false");
	
		$levels = LoggerTestHelper::getAllLevels();
		$events = LoggerTestHelper::getAllEvents();
	
		foreach($levels as $level) {
			$filter->setLevelToMatch($level);
				
			foreach($events as $event) {
				// Expecting given level to be denied, neutral for others
				$expected = ($event->getLevel() == $level) ? LoggerFilter::DENY : LoggerFilter::NEUTRAL;
				$actual = $filter->decide($event);
					
				// Get string represenations for logging
				$sExpected = LoggerTestHelper::decisionToString($expected);
				$sActual = LoggerTestHelper::decisionToString($actual);
	
				$this->assertSame($expected, $actual, "Failed asserting filter decision for event level <$level>. Expected <$sExpected>, found <$sActual>.");
			}
		}
	}
	
	/** Test that filter always decides NEUTRAL when levelToMatch is not set. */
	public function testDecideNull() {
		$filter = new LoggerFilterLevelMatch();
		$events = LoggerTestHelper::getAllEvents();
		
		foreach($events as $event) {
			$expected = LoggerFilter::NEUTRAL;
			$actual = $filter->decide($event);
				
			// Get string represenations for logging
			$sExpected = LoggerTestHelper::decisionToString($expected);
			$sActual = LoggerTestHelper::decisionToString($actual);
			$level = $event->getLevel();
			
			$this->assertSame($expected, $actual, "Failed asserting filter decision for event level <$level>. Expected <$sExpected>, found <$sActual>.");
		}
	}
	
	/** Test logger configuration. */
	public function testAcceptConfig() {
		$config = LoggerTestHelper::getEchoConfig();
		
		// Add filters to default appender
		$config['appenders']['default']['filters'] = array(
			
			// Accepts only INFO events
			array(
				'class' => 'LoggerFilterLevelMatch',
				'params' => array(
					'levelToMatch' => 'info',
					'acceptOnMatch' => true
				)
			),
			
			// Denies all events not accepted by first filter
			array(
				'class' => 'LoggerFilterDenyAll',
			)
		);
		 
		Logger::configure($config);
		$logger = Logger::getRootLogger();
		 
		ob_start();
		$logger->trace('Test');
		$logger->debug('Test');
		$logger->info('Test');
		$logger->warn('Test');
		$logger->error('Test');
		$logger->fatal('Test');
		
		$actual = ob_get_clean();

		
		$expected = "INFO - Test" . PHP_EOL;
	}
	
	public function testDenyConfig() {
		$config = LoggerTestHelper::getEchoConfig();
	
		// Add filter which denies INFO events
		$config['appenders']['default']['filters'] = array(
			array(
				'class' => 'LoggerFilterLevelMatch',
				'params' => array(
					'levelToMatch' => 'info',
					'acceptOnMatch' => false
				)
			)
		);
			
		Logger::configure($config);
		$logger = Logger::getRootLogger();
			
		ob_start();
		$logger->trace('Test');
		$logger->debug('Test');
		$logger->info('Test');
		$logger->warn('Test');
		$logger->error('Test');
		$logger->fatal('Test');
	
		$actual = ob_get_clean();
		
		// Should log all except info
		$expected = 
			"TRACE - Test" . PHP_EOL . 
			"DEBUG - Test" . PHP_EOL . 
			"WARN - Test"  . PHP_EOL . 
			"ERROR - Test" . PHP_EOL . 
			"FATAL - Test" . PHP_EOL;	
	
		$this->assertSame($expected, $actual);
	}
}