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https://github.com/danog/endtoend-test-psl.git
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29 lines
790 B
PHP
29 lines
790 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 ReductionsTest 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 testReductions(array $expected, iterable $iterable, callable $function, $initial = null): void
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{
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$result = Iter\reductions($iterable, $function, $initial);
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self::assertSame($expected, Iter\to_array_with_keys($result));
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}
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public function provideData(): iterable
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{
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yield [[], [], fn ($accumulator, $k, $v) => $accumulator, null];
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yield [[1, 3, 6], [1, 2, 3], fn ($accumulator, $k, $v) => $accumulator + $v, 0];
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yield [[1, 3, 6], Iter\to_iterator([1, 2, 3]), fn ($accumulator, $k, $v) => $accumulator + $v, 0];
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}
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}
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