68 lines
1.5 KiB
PHP
68 lines
1.5 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Tez\Utils\Tests\Arr;
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use PHPUnit\Framework\TestCase;
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use Tez\Utils\Arr\Transpose;
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final class TransposeTest extends TestCase
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{
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public function testTransposesMatrix(): void
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{
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$result = Transpose::matrix([
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[1, 2, 3],
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[4, 5, 6],
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]);
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self::assertSame([[1, 4], [2, 5], [3, 6]], $result);
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}
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public function testTransposesSquareMatrix(): void
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{
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$result = Transpose::matrix([
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[1, 2],
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[3, 4],
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]);
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self::assertSame([[1, 3], [2, 4]], $result);
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}
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public function testTransposesSingleRow(): void
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{
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$result = Transpose::matrix([[1, 2, 3]]);
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self::assertSame([[1], [2], [3]], $result);
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}
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public function testTransposesSingleColumn(): void
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{
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$result = Transpose::matrix([[1], [2], [3]]);
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self::assertSame([[1, 2, 3]], $result);
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}
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public function testEmptyInputReturnsEmpty(): void
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{
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self::assertSame([], Transpose::matrix([]));
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}
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public function testAssociativeKeysAreStripped(): void
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{
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$result = Transpose::matrix([
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['a' => 1, 'b' => 2],
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['a' => 3, 'b' => 4],
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]);
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self::assertSame([[1, 3], [2, 4]], $result);
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}
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public function testJaggedArrayThrows(): void
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{
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$this->expectException(\InvalidArgumentException::class);
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Transpose::matrix([[1, 2, 3], [4, 5]]);
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}
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}
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