rss-bridge/tests/Caches/CacheImplementationTest.php

<?php

namespace RssBridge\Tests\Caches;

use CacheInterface;
use PHPUnit\Framework\TestCase;

class CacheImplementationTest extends TestCase
{
    private $class;

    /**
     * @dataProvider dataCachesProvider
     */
    public function testClassName($path)
    {
        $this->setCache($path);
        $this->assertTrue($this->class === ucfirst($this->class), 'class name must start with uppercase character');
        $this->assertEquals(0, substr_count($this->class, ' '), 'class name must not contain spaces');
        $this->assertStringEndsWith('Cache', $this->class, 'class name must end with "Cache"');
    }

    /**
     * @dataProvider dataCachesProvider
     */
    public function testClassType($path)
    {
        $this->setCache($path);
        $this->assertTrue(is_subclass_of($this->class, CacheInterface::class), 'class must be subclass of CacheInterface');
    }

    ////////////////////////////////////////////////////////////////////////////

    public function dataCachesProvider()
    {
        $caches = [];
        foreach (glob(PATH_LIB_CACHES . '*.php') as $path) {
            $caches[basename($path, '.php')] = [$path];
        }
        return $caches;
    }

    private function setCache($path)
    {
        $this->class = '\\' . basename($path, '.php');
        $this->assertTrue(class_exists($this->class), 'class ' . $this->class . ' doesn\'t exist');
    }
}