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<?php
/**
* Test: Nette\Utils\Strings::length()
*/
declare(strict_types=1);
use Nette\Utils\Strings;
use Tester\Assert;
require __DIR__ . '/../bootstrap.php';
test('returns zero for empty string', function () {
Assert::same(0, Strings::length(''));
});
test('handles ASCII strings', function () {
Assert::same(5, Strings::length('hello'));
Assert::same(13, Strings::length('Hello, World!'));
});
test('counts UTF-8 characters correctly', function () {
// Iñtërnâtiônàlizætiøn
Assert::same(20, Strings::length("I\u{F1}t\u{EB}rn\u{E2}ti\u{F4}n\u{E0}liz\u{E6}ti\u{F8}n"));
Assert::same(1, Strings::length("\u{10000}")); // U+010000
});
test('counts precomposed characters as single unit', function () {
Assert::same(6, Strings::length("ma\u{F1}ana")); // mañana, U+00F1
});
test('counts combining characters separately', function () {
// mañana, U+006E + U+0303 (combining character)
Assert::same(7, Strings::length("man\u{303}ana"));
});
test('handles emoji and special symbols', function () {
// Emoji are counted as single code points (even if multiple bytes)
Assert::same(1, Strings::length('😀'));
Assert::same(6, Strings::length('Hello😀'));
});
test('handles various Unicode ranges', function () {
Assert::same(4, Strings::length('中文字符')); // Chinese characters
Assert::same(6, Strings::length('Привет')); // Cyrillic
Assert::same(5, Strings::length('مرحبا')); // Arabic
});
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