public function case_is_char_printable() { $this->when($result = LUT::isCharPrintable(LUT::fromCode(0x7f)))->then->boolean($result)->isFalse()->when($result = LUT::isCharPrintable(LUT::fromCode(0xa0)))->then->boolean($result)->isTrue()->when($result = LUT::isCharPrintable(LUT::fromCode(0x1100)))->then->boolean($result)->isTrue(); }