Kraken\_Unit\Util\Buffer\BufferTest::testApiShift_RemovesDataFromTheBeginning PHP Метод

    public function testApiShift_RemovesDataFromTheBeginning()
    {
        $length = 10;
        $result = $this->buffer->shift($length);
        $this->assertSame(substr($this->initialString, 0, $length), $result);
        $this->assertSame(substr($this->initialString, $length), (string) $this->buffer);
    }