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58 lines
1.6 KiB
PHP
Executable File
58 lines
1.6 KiB
PHP
Executable File
<?php
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/**
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* Jingga
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*
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* PHP Version 8.2
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*
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* @package tests
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* @copyright Dennis Eichhorn
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* @license OMS License 2.0
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* @version 1.0.0
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* @link https://jingga.app
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*/
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declare(strict_types=1);
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namespace phpOMS\tests\Math\Statistic\Forecast\Regression;
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use phpOMS\Math\Statistic\Forecast\Regression\PolynomialRegression;
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/**
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* @internal
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*/
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#[\PHPUnit\Framework\Attributes\TestDox('phpOMS\tests\Math\Statistic\Forecast\Regression\PolynomialRegressionTest: Polynomial regression')]
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final class PolynomialRegressionTest extends \PHPUnit\Framework\TestCase
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{
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protected $reg = null;
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/**
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* {@inheritdoc}
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*/
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protected function setUp() : void
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{
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// y = 1.0 + 2.0 * x + 3.0 * x^2
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$x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
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$y = [1, 6, 17, 34, 57, 86, 121, 162, 209, 262, 321];
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$this->reg = PolynomialRegression::getRegression($x, $y);
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}
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#[\PHPUnit\Framework\Attributes\Group('framework')]
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#[\PHPUnit\Framework\Attributes\TestDox('The regression parameters are calculated correctly')]
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public function testRegression() : void
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{
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self::assertEqualsWithDelta(['a' => 1, 'b' => 2, 'c' => 3], $this->reg, 0.2);
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}
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#[\PHPUnit\Framework\Attributes\Group('framework')]
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#[\PHPUnit\Framework\Attributes\TestDox('Different dimension sizes for x and y coordinates throw a InvalidDimensionException')]
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public function testInvalidDimension() : void
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{
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$this->expectException(\phpOMS\Math\Matrix\Exception\InvalidDimensionException::class);
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$x = [1,2, 3];
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$y = [1,2, 3, 4];
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PolynomialRegression::getRegression($x, $y);
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}
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}
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