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<?php

namespace Psr\Log\Test;

use Psr\Log\LoggerInterface;

use Psr\Log\LogLevel;

/**

 * Provides a base test class for ensuring compliance with the LoggerInterface.

 *

 * Implementors can extend the class and implement abstract methods to run this

 * as part of their test suite.

 */

abstract class LoggerInterfaceTest extends \PHPUnit_Framework_TestCase

{

    /**

     * @return LoggerInterface

     */

    abstract public function getLogger();

    /**

     * This must return the log messages in order.

     *

     * The simple formatting of the messages is: "<LOG LEVEL> <MESSAGE>".

     *

     * Example ->error('Foo') would yield "error Foo".

     *

     * @return string[]

     */

    abstract public function getLogs();

    public function testImplements()

    {

        $this->assertInstanceOf('Psr\Log\LoggerInterface', $this->getLogger());

    }

    /**

     * @dataProvider provideLevelsAndMessages

     */

    public function testLogsAtAllLevels($level, $message)

    {

        $logger = $this->getLogger();

        $logger->{$level}($message, array('user' => 'Bob'));

        $logger->log($level, $message, array('user' => 'Bob'));

        $expected = array(

            $level.' message of level '.$level.' with context: Bob',

            $level.' message of level '.$level.' with context: Bob',

        );

        $this->assertEquals($expected, $this->getLogs());

    }

    public function provideLevelsAndMessages()

    {

        return array(

            LogLevel::EMERGENCY => array(LogLevel::EMERGENCY, 'message of level emergency with context: {user}'),

            LogLevel::ALERT => array(LogLevel::ALERT, 'message of level alert with context: {user}'),

            LogLevel::CRITICAL => array(LogLevel::CRITICAL, 'message of level critical with context: {user}'),

            LogLevel::ERROR => array(LogLevel::ERROR, 'message of level error with context: {user}'),

            LogLevel::WARNING => array(LogLevel::WARNING, 'message of level warning with context: {user}'),

            LogLevel::NOTICE => array(LogLevel::NOTICE, 'message of level notice with context: {user}'),

            LogLevel::INFO => array(LogLevel::INFO, 'message of level info with context: {user}'),

            LogLevel::DEBUG => array(LogLevel::DEBUG, 'message of level debug with context: {user}'),

        );

    }

    /**

     * @expectedException \Psr\Log\InvalidArgumentException

     */

    public function testThrowsOnInvalidLevel()

    {

        $logger = $this->getLogger();

        $logger->log('invalid level', 'Foo');

    }

    public function testContextReplacement()

    {

        $logger = $this->getLogger();

        $logger->info('{Message {nothing} {user} {foo.bar} a}', array('user' => 'Bob', 'foo.bar' => 'Bar'));

        $expected = array('info {Message {nothing} Bob Bar a}');

        $this->assertEquals($expected, $this->getLogs());

    }

    public function testObjectCastToString()

    {

        if (method_exists($this, 'createPartialMock')) {

            $dummy = $this->createPartialMock('Psr\Log\Test\DummyTest', array('__toString'));

        } else {

            $dummy = $this->getMock('Psr\Log\Test\DummyTest', array('__toString'));

        }

        $dummy->expects($this->once())

            ->method('__toString')

            ->will($this->returnValue('DUMMY'));

        $this->getLogger()->warning($dummy);

        $expected = array('warning DUMMY');

        $this->assertEquals($expected, $this->getLogs());

    }

    public function testContextCanContainAnything()

    {

        $context = array(

            'bool' => true,

            'null' => null,

            'string' => 'Foo',

            'int' => 0,

            'float' => 0.5,

            'nested' => array('with object' => new DummyTest),

            'object' => new \DateTime,

            'resource' => fopen('php://memory', 'r'),

        );

        $this->getLogger()->warning('Crazy context data', $context);

        $expected = array('warning Crazy context data');

        $this->assertEquals($expected, $this->getLogs());

    }

    public function testContextExceptionKeyCanBeExceptionOrOtherValues()

    {

        $logger = $this->getLogger();

        $logger->warning('Random message', array('exception' => 'oops'));

        $logger->critical('Uncaught Exception!', array('exception' => new \LogicException('Fail')));

        $expected = array(

            'warning Random message',

            'critical Uncaught Exception!'

        );

        $this->assertEquals($expected, $this->getLogs());

    }

}

class DummyTest

{

    public function __toString()

    {

    }

}