PhpSpreadsheet/tests/PhpSpreadsheetTests/Calculation/Functions/Financial/SlnTest.php

<?php

namespace PhpOffice\PhpSpreadsheetTests\Calculation\Functions\Financial;

use PhpOffice\PhpSpreadsheet\Calculation\Financial\Depreciation;
use PhpOffice\PhpSpreadsheet\Calculation\Functions;
use PHPUnit\Framework\TestCase;

class SlnTest extends TestCase
{
    protected function setUp(): void
    {
        Functions::setCompatibilityMode(Functions::COMPATIBILITY_EXCEL);
    }

    /**
     * @dataProvider providerSLN
     *
     * @param mixed $expectedResult
     */
    public function testSLN($expectedResult, array $args): void
    {
        $result = Depreciation::straightLine(...$args);
        self::assertEqualsWithDelta($expectedResult, $result, 1E-8);
    }

    public function providerSLN(): array
    {
        return require 'tests/data/Calculation/Financial/SLN.php';
    }
}