PhpSpreadsheet/tests/PhpSpreadsheetTests/Calculation/Functions/Database/DStDevTest.php

<?php

namespace PhpOffice\PhpSpreadsheetTests\Calculation\Functions\Database;

use PhpOffice\PhpSpreadsheet\Calculation\Database\DStDev;
use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError;

class DStDevTest extends SetupTeardownDatabases
{
    /**
     * @dataProvider providerDStDev
     */
    public function testDirectCallToDStDev(float|string $expectedResult, array $database, ?string $field, array $criteria): void
    {
        $result = DStDev::evaluate($database, $field, $criteria);
        self::assertEqualsWithDelta($expectedResult, $result, 1.0e-12);
    }

    /**
     * @dataProvider providerDStDev
     */
    public function testDStDevAsWorksheetFormula(float|string $expectedResult, array $database, ?string $field, array $criteria): void
    {
        $this->prepareWorksheetWithFormula('DSTDEV', $database, $field, $criteria);

        $result = $this->getSheet()->getCell(self::RESULT_CELL)->getCalculatedValue();
        self::assertEqualsWithDelta($expectedResult, $result, 1.0e-12);
    }

    public static function providerDStDev(): array
    {
        return [
            [
                2.966479394838,
                self::database1(),
                'Yield',
                [
                    ['Tree'],
                    ['=Apple'],
                    ['=Pear'],
                ],
            ],
            [
                0.104403065089,
                self::database3FilledIn(),
                'Score',
                [
                    ['Subject', 'Gender'],
                    ['English', 'Male'],
                ],
            ],
            [
                0.196723155729,
                self::database3FilledIn(),
                'Score',
                [
                    ['Subject', 'Age'],
                    ['Math', '>8'],
                ],
            ],
            'omitted field name' => [
                ExcelError::VALUE(),
                self::database1(),
                null,
                self::database1(),
            ],
        ];
    }
}