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<?php |
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/** |
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* Box packing (3D bin packing, knapsack problem). |
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* |
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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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/** |
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* @covers \DVDoug\BoxPacker\Packer |
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*/ |
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class PackerTest extends TestCase |
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{ |
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/** |
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* @expectedException \DVDoug\BoxPacker\ItemTooLargeException |
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*/ |
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public function testPackThreeItemsOneDoesntFitInAnyBox() |
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{ |
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$box1 = new TestBox('Le petite box', 300, 300, 10, 10, 296, 296, 8, 1000); |
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$box2 = new TestBox('Le grande box', 3000, 3000, 100, 100, 2960, 2960, 80, 10000); |
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$item1 = new TestItem('Item 1', 2500, 2500, 20, 2000, true); |
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$item2 = new TestItem('Item 2', 25000, 2500, 20, 2000, true); |
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$item3 = new TestItem('Item 3', 2500, 2500, 20, 2000, true); |
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$packer = new Packer(); |
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$packer->addBox($box1); |
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$packer->addBox($box2); |
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$packer->addItem($item1); |
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$packer->addItem($item2); |
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$packer->addItem($item3); |
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$packer->pack(); |
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} |
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/** |
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* @expectedException \DVDoug\BoxPacker\ItemTooLargeException |
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*/ |
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public function testPackWithoutBox() |
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{ |
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$item1 = new TestItem('Item 1', 2500, 2500, 20, 2000, true); |
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$item2 = new TestItem('Item 2', 25000, 2500, 20, 2000, true); |
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$item3 = new TestItem('Item 3', 2500, 2500, 20, 2000, true); |
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$packer = new Packer(); |
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$packer->addItem($item1); |
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$packer->addItem($item2); |
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$packer->addItem($item3); |
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$packer->pack(); |
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} |
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/** |
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* Test weight distribution getter/setter. |
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*/ |
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public function testCanSetMaxBoxesToWeightBalance() |
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{ |
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$packer = new Packer(); |
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$packer->setMaxBoxesToBalanceWeight(3); |
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self::assertEquals(3, $packer->getMaxBoxesToBalanceWeight()); |
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} |
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/** |
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* Test that weight redistribution activates (or not) correctly based on the current limit. |
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*/ |
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public function testWeightRedistributionActivatesOrNot() |
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{ |
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// first pack normally - expecting 2+2 after balancing |
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$packer = new Packer(); |
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$packer->addBox(new TestBox('Box', 1, 1, 3, 0, 1, 1, 3, 3)); |
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$packer->addItem(new TestItem('Item', 1, 1, 1, 1, false), 4); |
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/** @var PackedBox[] $packedBoxes */ |
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$packedBoxes = iterator_to_array($packer->pack(), false); |
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self::assertEquals(2, $packedBoxes[0]->getItems()->count()); |
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self::assertEquals(2, $packedBoxes[1]->getItems()->count()); |
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// same items, but with redistribution turned off - expecting 3+1 based on pure fit |
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$packer = new Packer(); |
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$packer->addBox(new TestBox('Box', 1, 1, 3, 0, 1, 1, 3, 3)); |
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$packer->addItem(new TestItem('Item', 1, 1, 1, 1, false), 4); |
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$packer->setMaxBoxesToBalanceWeight(1); |
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/** @var PackedBox[] $packedBoxes */ |
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$packedBoxes = iterator_to_array($packer->pack(), false); |
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self::assertEquals(3, $packedBoxes[0]->getItems()->count()); |
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self::assertEquals(1, $packedBoxes[1]->getItems()->count()); |
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} |
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/** |
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* Test used width calculations on a case where it used to fail. |
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*/ |
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public function testIssue52A() |
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{ |
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$packer = new Packer(); |
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$packer->addBox(new TestBox('Box', 100, 50, 50, 0, 100, 50, 50, 5000)); |
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$packer->addItem(new TestItem('Item', 15, 13, 8, 407, true), 2); |
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$packedBoxes = $packer->pack(); |
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self::assertEquals(1, $packedBoxes->count()); |
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self::assertEquals(26, $packedBoxes->top()->getUsedWidth()); |
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self::assertEquals(15, $packedBoxes->top()->getUsedLength()); |
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self::assertEquals(8, $packedBoxes->top()->getUsedDepth()); |
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} |
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/** |
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* Test used width calculations on a case where it used to fail. |
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*/ |
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public function testIssue52B() |
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{ |
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$packer = new Packer(); |
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$packer->addBox(new TestBox('Box', 370, 375, 60, 140, 364, 374, 40, 3000)); |
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$packer->addItem(new TestItem('Item 1', 220, 310, 12, 679, true)); |
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$packer->addItem(new TestItem('Item 2', 210, 297, 11, 648, true)); |
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$packer->addItem(new TestItem('Item 3', 210, 297, 5, 187, true)); |
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$packer->addItem(new TestItem('Item 4', 148, 210, 32, 880, true)); |
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$packedBoxes = $packer->pack(); |
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self::assertEquals(1, $packedBoxes->count()); |
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self::assertEquals(310, $packedBoxes->top()->getUsedWidth()); |
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self::assertEquals(368, $packedBoxes->top()->getUsedLength()); |
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self::assertEquals(32, $packedBoxes->top()->getUsedDepth()); |
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} |
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/** |
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* Test used width calculations on a case where it used to fail. |
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*/ |
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public function testIssue52C() |
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{ |
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$packer = new Packer(); |
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$packer->addBox(new TestBox('Box', 230, 300, 240, 160, 230, 300, 240, 15000)); |
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$packer->addItem(new TestItem('Item 1', 210, 297, 4, 213, true)); |
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$packer->addItem(new TestItem('Item 2', 80, 285, 70, 199, true)); |
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$packer->addItem(new TestItem('Item 3', 80, 285, 70, 199, true)); |
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/** @var PackedBox[] $packedBoxes */ |
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$packedBoxes = iterator_to_array($packer->pack(), false); |
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self::assertEquals(2, count($packedBoxes)); |
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self::assertEquals(160, $packedBoxes[0]->getUsedWidth()); |
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self::assertEquals(285, $packedBoxes[0]->getUsedLength()); |
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self::assertEquals(70, $packedBoxes[0]->getUsedDepth()); |
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self::assertEquals(210, $packedBoxes[1]->getUsedWidth()); |
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self::assertEquals(297, $packedBoxes[1]->getUsedLength()); |
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self::assertEquals(4, $packedBoxes[1]->getUsedDepth()); |
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} |
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} |
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dvdoug /
BoxPacker
