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28 lines
626 B
PHP
28 lines
626 B
PHP
<?php
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declare(strict_types=1);
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namespace Psl\Tests\Iter;
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use PHPUnit\Framework\TestCase;
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use Psl;
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use Psl\Iter;
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class TakeTest extends TestCase
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{
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public function testTake(): void
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{
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$result = Iter\take(Iter\to_iterator([-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5]), 3);
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self::assertSame([-5, -4, -3], Iter\to_array($result));
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}
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public function testTakeThrowsIfLengthIsNegative(): void
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{
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$this->expectException(Psl\Exception\InvariantViolationException::class);
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$this->expectExceptionMessage('Length must be non-negative.');
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Iter\take([1, 2, 3], -3);
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}
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}
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