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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Box packing (3D bin packing, knapsack problem)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package BoxPacker  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Doug Wright  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace DVDoug\BoxPacker;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use DVDoug\BoxPacker\Test\TestBox;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use DVDoug\BoxPacker\Test\TestItem;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use PHPUnit\Framework\TestCase;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class PackedBoxTest extends TestCase  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                { | 
            
            
                                                                        
                            
            
                                    
            
            
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                    function testGetters()  | 
            
                            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $box = new TestBox('Box', 370, 375, 60, 140, 364, 374, 40, 3000); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $item = new TestItem('Item', 230, 330, 6, 320); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $boxItems = new ItemList();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $boxItems->insert($item);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $packedBox = new PackedBox($box, $boxItems, 1, 2, 3, 4, 0, 0, 0);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        self::assertEquals(1, $packedBox->getRemainingWidth());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        self::assertEquals(2, $packedBox->getRemainingLength());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        self::assertEquals(3, $packedBox->getRemainingDepth());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        self::assertEquals(4, $packedBox->getRemainingWeight());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    function testVolumeUtilisation()  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $box = new TestBox('Box', 10, 10, 10, 10, 10, 10, 10, 10); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $item = new TestItem('Item', 5, 10, 10, 10); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $boxItems = new ItemList();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $boxItems->insert($item);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $packedBox = new PackedBox($box, $boxItems, 1, 2, 3, 4, 0, 0, 0);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::assertEquals(50, $packedBox->getVolumeUtilisation());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Adding explicit visibility (
private,protected, orpublic) is generally recommend to communicate to other developers how, and from where this method is intended to be used.