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https://github.com/PHPOffice/PhpSpreadsheet.git
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oleibman
53bce34456
For an overview of why this is desired (and ways that people have coped with its absence), see issue #2900 and issue #4048; also PR #4043 which will be superseded by this PR. The list of Excel functions is moved from Calculation/Calculation to its own member. I believe that it is done in a way that will not cause big complications to two experiments from @MarkBaker (PR #2714 and PR #2734). I believe it is also done in such a way that further refactoring of Calculation can follow this model. Custom functions can be added or removed from the function list. You cannot add a function if it already exists in the list, and you cannot remove a non-custom function from the list. They will, of course, not be understood by Excel if written to a spreadsheet; the use case is mainly using the Calculation engine outside of spreadsheet context.
36 lines
1.4 KiB
PHP
36 lines
1.4 KiB
PHP
<?php
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declare(strict_types=1);
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namespace PhpOffice\PhpSpreadsheetTests\Calculation;
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use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
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use PHPUnit\Framework\TestCase;
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class CustomFunctionTest extends TestCase
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{
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public static function testCustomFunction(): void
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{
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$calculation = Calculation::getInstance();
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$key = 'FOURTHPOWER';
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// I have no idea why Phpstan needs this
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/** @var array<string, array> */
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$value = [
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'category' => 'custom',
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'functionCall' => [CustomFunction::class, 'fourthPower'],
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'argumentCount' => '1',
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];
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self::assertTrue(Calculation::addFunction($key, $value));
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self::assertSame(16, $calculation->calculateFormula('=FOURTHPOWER(2)'));
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self::assertSame('#VALUE!', $calculation->calculateFormula('=FOURTHPOWER("X")'));
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self::assertSame('#NAME?', $calculation->calculateFormula('=FOURTHPOWE("X")'));
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self::assertFalse(Calculation::removeFunction('SQRT'));
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self::assertSame(2.0, $calculation->calculateFormula('=SQRT(4)'));
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self::assertFalse(Calculation::removeFunction('sqrt'));
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self::assertSame(4.0, $calculation->calculateFormula('=sqrt(16)'));
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self::assertTrue(Calculation::removeFunction($key));
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self::assertSame('#NAME?', $calculation->calculateFormula('=FOURTHPOWER(3)'));
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self::assertFalse(Calculation::removeFunction('WHATEVER'));
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}
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}
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