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48 lines
1.4 KiB
PHP
48 lines
1.4 KiB
PHP
<?php
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/**
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* Karaka
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*
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* PHP Version 8.1
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*
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* @package tests
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* @copyright Dennis Eichhorn
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* @license OMS License 1.0
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* @version 1.0.0
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* @link https://karaka.app
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*/
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declare(strict_types=1);
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namespace phpOMS\tests\Business\Sales;
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use phpOMS\Business\Sales\MarketShareEstimation;
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/**
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* @testdox phpOMS\tests\Business\Sales\MarketShareEstimationTest: Market share calculations
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*
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* @internal
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*/
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final class MarketShareEstimationTest extends \PHPUnit\Framework\TestCase
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{
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/**
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* @testdox The rank calculated with Zipf is correct
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* @group framework
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*/
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public function testZipfRank() : void
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{
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self::assertEquals(13, MarketShareEstimation::getRankFromMarketShare(1000, 0.01));
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self::assertEquals(19, MarketShareEstimation::getRankFromMarketShare(100, 0.01));
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self::assertEquals(8, MarketShareEstimation::getRankFromMarketShare(100000, 0.01));
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}
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/**
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* @testdox The market share by rank calculated with Zipf is correct
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* @group framework
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*/
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public function testZipfShare() : void
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{
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self::assertTrue(\abs(0.01 - MarketShareEstimation::getMarketShareFromRank(1000, 13)) < 0.01);
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self::assertTrue(\abs(0.01 - MarketShareEstimation::getMarketShareFromRank(100, 19)) < 0.01);
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self::assertTrue(\abs(0.01 - MarketShareEstimation::getMarketShareFromRank(100000, 8)) < 0.01);
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}
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}
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