PhpSpreadsheet/tests/PhpSpreadsheetTests/Calculation/Functions/MathTrig/SignTest.php

<?php

declare(strict_types=1);

namespace PhpOffice\PhpSpreadsheetTests\Calculation\Functions\MathTrig;

use PhpOffice\PhpSpreadsheet\Calculation\Calculation;

class SignTest extends AllSetupTeardown
{
    #[\PHPUnit\Framework\Attributes\DataProvider('providerSIGN')]
    public function testSIGN(float|int|string $expectedResult, float|int|string $value): void
    {
        $this->mightHaveException($expectedResult);
        $sheet = $this->getSheet();
        $sheet->setCellValue('A2', 1.3);
        $sheet->setCellValue('A3', 0);
        $sheet->setCellValue('A4', -3.8);
        $sheet->getCell('A1')->setValue("=SIGN($value)");
        $result = $sheet->getCell('A1')->getCalculatedValue();
        self::assertEquals($expectedResult, $result);
    }

    public static function providerSIGN(): array
    {
        return require 'tests/data/Calculation/MathTrig/SIGN.php';
    }

    #[\PHPUnit\Framework\Attributes\DataProvider('providerSignArray')]
    public function testSignArray(array $expectedResult, string $array): void
    {
        $calculation = Calculation::getInstance();

        $formula = "=SIGN({$array})";
        $result = $calculation->calculateFormula($formula);
        self::assertEqualsWithDelta($expectedResult, $result, 1.0e-14);
    }

    public static function providerSignArray(): array
    {
        return [
            'row vector' => [[[-1, 0, 1]], '{-1.5, 0, 0.3}'],
            'column vector' => [[[-1], [0], [1]], '{-1.5; 0; 0.3}'],
            'matrix' => [[[-1, 0], [1, 1]], '{-1.5, 0; 0.3, 12.5}'],
        ];
    }
}