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<?php
/**
* Test: Nette\Utils\Strings::substring()
*/
declare(strict_types=1);
use Nette\Utils\Strings;
use Tester\Assert;
require __DIR__ . '/../bootstrap.php';
$s = "man\u{303}ana"; // mañana, U+006E + U+0303 (combining character)
// zero, zero
Assert::same('', Strings::substring($s, 0, 0));
// zero, default
Assert::same("man\u{303}ana", Strings::substring($s, 0));
// zero, positive
Assert::same('man', Strings::substring($s, 0, 3));
Assert::same("man\u{303}", Strings::substring($s, 0, 4));
/// zero, negative
Assert::same("man\u{303}", Strings::substring($s, 0, -3));
Assert::same('man', Strings::substring($s, 0, -4));
// positive, zero
Assert::same('', Strings::substring($s, 3, 0));
// positive, default
Assert::same("\u{303}ana", Strings::substring($s, 3));
Assert::same('ana', Strings::substring($s, 4));
// positive, positive
Assert::same('an', Strings::substring($s, 1, 2));
Assert::same("an\u{303}", Strings::substring($s, 1, 3));
Assert::same("n\u{303}", Strings::substring($s, 2, 2));
Assert::same("\u{303}a", Strings::substring($s, 3, 2));
// positive, negative
Assert::same("an\u{303}", Strings::substring($s, 1, -3));
Assert::same('an', Strings::substring($s, 1, -4));
// negative, zero
Assert::same('', Strings::substring($s, -3, 0));
// negative, default
Assert::same("\u{303}ana", Strings::substring($s, -4));
Assert::same("n\u{303}ana", Strings::substring($s, -5));
// negative, positive
Assert::same("\u{303}a", Strings::substring($s, -4, 2));
Assert::same('n', Strings::substring($s, -5, 1));
// negative, negative
Assert::same("n\u{303}", Strings::substring($s, -5, -3));
Assert::same('n', Strings::substring($s, -5, -4));
Assert::same('', Strings::substring($s, -5, -5));
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