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104 lines
3.8 KiB
PHP
104 lines
3.8 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\Finance;
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use phpOMS\Business\Finance\Depreciation;
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/**
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* @testdox phpOMS\tests\Business\Finance\DepreciationTest: Depreciation calculations
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*
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* @internal
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*/
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final class DepreciationTest extends \PHPUnit\Framework\TestCase
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{
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/**
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* @testdox The straight line depreciation and reverse value calculations are correct
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* @group framework
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*/
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public function testStraightLine() : void
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{
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$start = 23280;
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$duration = 6;
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$t = 2;
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self::assertEqualsWithDelta(3880, Depreciation::getStraightLineDepreciation($start, $duration), 5);
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self::assertEqualsWithDelta(23280 - 3880 * $t, Depreciation::getStraightLineResidualInT($start, $duration, $t), 5);
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}
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/**
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* @testdox The arithmetic degressive depreciation and reverse value calculations are correct
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* @group framework
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*/
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public function testArithmeticDegressiveDepreciation() : void
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{
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$start = 150000;
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$residual = 18000;
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$duration = 5;
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$t = 2;
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self::assertEqualsWithDelta(8800, Depreciation::getArithmeticDegressiveDepreciationFactor($start, $residual, $duration), 5);
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self::assertEqualsWithDelta(35200, Depreciation::getArithmeticDegressiveDepreciationInT($start, $residual,$duration, $t), 5);
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self::assertEqualsWithDelta(70800, Depreciation::getArithmeticDegressiveDepreciationResidualInT($start, $residual, $duration, $t), 5);
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}
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/**
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* @testdox The arithmetic progressive depreciation and reverse value calculations are correct
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* @group framework
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*/
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public function testArithmeticProgressiveDepreciation() : void
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{
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$start = 40000;
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$residual = 4700;
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$duration = 4;
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$t = 2;
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self::assertEqualsWithDelta(3530, Depreciation::getArithmeticProgressiveDepreciationFactor($start, $residual, $duration), 5);
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self::assertEqualsWithDelta(7060, Depreciation::getArithmeticProgressiveDepreciationInT($start, $residual, $duration, $t), 5);
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self::assertEqualsWithDelta(29410, Depreciation::getArithmeticProgressiveDepreciationResidualInT($start, $residual, $duration, $t), 5);
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}
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/**
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* @testdox The geometric progressive depreciation and reverse value calculations are correct
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* @group framework
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*/
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public function testGeometricProgressiveDepreciation() : void
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{
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$start = 150000;
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$residual = 18000;
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$duration = 5;
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$t = 2;
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self::assertEqualsWithDelta(0.3456, Depreciation::getGeometicProgressiveDepreciationRate($start, $residual, $duration), 0.01);
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self::assertEqualsWithDelta(14527, Depreciation::getGeometicProgressiveDepreciationInT($start, $residual, $duration, $t), 5);
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self::assertEqualsWithDelta(125965, Depreciation::getGeometicProgressiveDepreciationResidualInT($start, $residual, $duration, $t), 5);
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}
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/**
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* @testdox The geometric degressive depreciation and reverse value calculations are correct
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* @group framework
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*/
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public function testGeometricDegressiveDepreciation() : void
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{
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$start = 150000;
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$residual = 18000;
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$duration = 5;
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$t = 2;
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self::assertEqualsWithDelta(0.3456, Depreciation::getGeometicDegressiveDepreciationRate($start, $residual, $duration), 0.01);
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self::assertEqualsWithDelta(33924, Depreciation::getGeometicDegressiveDepreciationInT($start, $residual, $duration, $t), 5);
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self::assertEqualsWithDelta(64236, Depreciation::getGeometicDegressiveDepreciationResidualInT($start, $residual, $duration, $t), 5);
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}
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}
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