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33 lines
741 B
PHP
33 lines
741 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\Iter;
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class KeysTest extends TestCase
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{
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/**
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* @dataProvider provideData
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*/
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public function testKeys(array $expected, iterable $iterable): void
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{
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$result = Iter\keys($iterable);
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self::assertSame($expected, Iter\to_array_with_keys($result));
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}
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public function provideData(): iterable
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{
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yield [[0, 1, 2, 3], [1, 2, 3, 4]];
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yield [[0, 1, 2, 3], Iter\to_iterator([1, 2, 3, 4])];
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yield [[0, 1, 2, 3], Iter\range(1, 4)];
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yield [[0, 1, 2, 3, 4], Iter\range(4, 8)];
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yield [[], []];
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yield [[0], [null]];
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yield [[0, 1], [null, null]];
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}
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}
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