PhpSpreadsheet/tests/PhpSpreadsheetTests/Calculation/Functions/Statistical/TDotInvTest.php

<?php

declare(strict_types=1);

namespace PhpOffice\PhpSpreadsheetTests\Calculation\Functions\Statistical;

use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
use PHPUnit\Framework\Attributes\DataProvider;

class TDotInvTest extends AllSetupTeardown
{
    /**
     * @var false|string
     */
    private $currentLocale;

    protected function setUp(): void
    {
        parent::setUp();
        $this->currentLocale = setlocale(LC_ALL, '0');
    }

    protected function tearDown(): void
    {
        parent::tearDown();
        if (is_string($this->currentLocale)) {
            setlocale(LC_ALL, $this->currentLocale);
        }
    }

    #[DataProvider('providerTdotINV')]
    public function testTdotINV(mixed $expectedResult, mixed $probability, mixed $degrees): void
    {
        $this->runTestCaseReference('T.INV', $expectedResult, $probability, $degrees);
    }

    #[DataProvider('providerTdotINV')]
    public function testTdotINVLocale(mixed $expectedResult, mixed $probability, mixed $degrees): void
    {
        if (!setlocale(LC_ALL, 'fr_FR.UTF-8', 'fra_fra.utf8')) {
            self::markTestSkipped('Unable to set locale for testing.');
        }
        $this->runTestCaseReference('T.INV', $expectedResult, $probability, $degrees);
    }

    public static function providerTdotINV(): array
    {
        return require 'tests/data/Calculation/Statistical/TdotINV.php';
    }

    #[DataProvider('providerTInvArray')]
    public function testTInvArray(array $expectedResult, string $values, string $degrees): void
    {
        $calculation = Calculation::getInstance();

        $formula = "=T.INV({$values}, {$degrees})";
        $result = $calculation->calculateFormula($formula);
        self::assertEqualsWithDelta($expectedResult, $result, 1.0e-6);
    }

    public static function providerTInvArray(): array
    {
        return [
            'row vector' => [
                [
                    [0.509525, 0.424202, 0.399469],
                ],
                '0.65',
                '{1.5, 3.5, 8}',
            ],
        ];
    }
}