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https://github.com/danog/endtoend-test-psl.git
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35 lines
933 B
PHP
35 lines
933 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 FromKeysTest extends TestCase
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{
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public function testFromKeys(): void
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{
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$actual = Iter\from_keys(['hello', 'world'], fn (string $_key) => false);
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self::assertSame('hello', Iter\first_key($actual));
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self::assertSame('world', Iter\last_key($actual));
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self::assertFalse(Iter\first($actual));
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self::assertFalse(Iter\last($actual));
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}
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public function testFromKeysWithNonArrayKeyKeys(): void
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{
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$actual = Iter\from_keys([
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[1, 'hello'],
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[2, 'world']
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], fn (array $k) => $k[1]);
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self::assertSame([1, 'hello'], Iter\first_key($actual));
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self::assertSame([2, 'world'], Iter\last_key($actual));
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self::assertSame('hello', Iter\first($actual));
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self::assertSame('world', Iter\last($actual));
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}
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}
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