lithium\tests\cases\storage\cache\adapter\FileTest::testClean PHP Method

    public function testClean()
    {
        $time = time() - 10;
        $path = Libraries::get(true, 'resources') . "/tmp/cache/key_to_clean";
        file_put_contents($path, "{:expiry:{$time}}\ndata");
        $result = $this->File->clean();
        $this->assertTrue($result);
        $this->assertFileNotExists($path);
        $time = time() + 10;
        $path = Libraries::get(true, 'resources') . "/tmp/cache/key_not_to_clean";
        file_put_contents($path, "{:expiry:{$time}}\ndata");
        $result = $this->File->clean();
        $this->assertTrue($result);
        $this->assertFileExists($path);
    }