xny/vendor/phpoffice/phpspreadsheet/tests/PhpSpreadsheetTests/Calculation/Functions/Statistical/StandardizeTest.php

<?php

namespace PhpOffice\PhpSpreadsheetTests\Calculation\Functions\Statistical;

use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
use PhpOffice\PhpSpreadsheet\Calculation\Statistical;
use PHPUnit\Framework\TestCase;

class StandardizeTest extends TestCase
{
    /**
     * @dataProvider providerSTANDARDIZE
     *
     * @param mixed $expectedResult
     */
    public function testSTANDARDIZE($expectedResult, ...$args): void
    {
        $result = Statistical::STANDARDIZE(...$args);
        self::assertEqualsWithDelta($expectedResult, $result, 1E-12);
    }

    public function providerSTANDARDIZE(): array
    {
        return require 'tests/data/Calculation/Statistical/STANDARDIZE.php';
    }

    /**
     * @dataProvider providerStandardizeArray
     */
    public function testStandardizeArray(array $expectedResult, string $argument1, string $argument2, string $argument3): void
    {
        $calculation = Calculation::getInstance();

        $formula = "=STANDARDIZE({$argument1}, {$argument2}, {$argument3})";
        $result = $calculation->_calculateFormulaValue($formula);
        self::assertEqualsWithDelta($expectedResult, $result, 1.0e-14);
    }

    public function providerStandardizeArray(): array
    {
        return [
            'row vector' => [[[-1.6666666666666667, -4.6666666666666667, -7.333333333333333, -10, -11.333333333333334]], '{12.5, 8, 4, 0, -2}', '15', '1.5'],
            'column vector' => [[[0.25], [0.0], [-1.0]], '{5.5; 5; 3}', '5.0', '2.0'],
            'matrix' => [[[0.25, -1.0], [-1.75, -2.75]], '{5.5, 3; 1.5, -0.5}', '5.0', '2.0'],
        ];
    }
}