LoggerTest.php

<?php

namespace Jcupitt\Vips\Test;

use Jcupitt\Vips;
use PHPUnit\Framework\TestCase;
use Psr\Log\LoggerInterface;
use Psr\Log\LoggerTrait;

class LoggerTest extends TestCase
{
    public function testGetLoggerCall()
    {
        // Asserts that getLogger without setting it should
        // return a null value.
        $logger = Vips\Config::getLogger();

        $this->assertNull($logger);
    }

    public function testSetLoggerCall()
    {
        Vips\Config::setLogger(new class implements LoggerInterface
        {
            use LoggerTrait;

            /**
             * Logs with an arbitrary level.
             *
             * @param mixed  $level
             * @param string $message
             * @param array  $context
             *
             * @return void
             */
            public function log($level, $message, array $context = array())
            {
                // Do logging logic here.
            }
        });

        $logger = Vips\Config::getLogger();

        // Asserts that getLogger should return an instance of Psr\Log\LoggerInterface
        $this->assertInstanceOf(LoggerInterface::class, $logger);
    }
}

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