getMode()); self::assertSame(11, $data->getLength()); } public function testInvalidDataThrows(): void { $this->expectException(\InvalidArgumentException::class); new AlphanumericData('hello'); } public function testIsValid(): void { self::assertTrue(AlphanumericData::isValid('HELLO')); self::assertTrue(AlphanumericData::isValid('0123456789')); self::assertTrue(AlphanumericData::isValid(' $%*+-./:')); self::assertFalse(AlphanumericData::isValid('hello')); self::assertFalse(AlphanumericData::isValid('')); } public function testWriteEvenLength(): void { $data = new AlphanumericData('AB'); $buffer = new BitBuffer(); $data->write($buffer); self::assertSame(11, $buffer->getLengthInBits()); } public function testWriteOddLength(): void { $data = new AlphanumericData('ABC'); $buffer = new BitBuffer(); $data->write($buffer); self::assertSame(17, $buffer->getLengthInBits()); } public function testAllValidCharacters(): void { $chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:'; $data = new AlphanumericData($chars); self::assertSame(strlen($chars), $data->getLength()); } public function testGetLengthInBits(): void { $data = new AlphanumericData('A'); self::assertSame(9, $data->getLengthInBits(1)); self::assertSame(11, $data->getLengthInBits(10)); self::assertSame(13, $data->getLengthInBits(27)); } }