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| 1 | +using Stack_Solver.Models; |
| 2 | +using Stack_Solver.Models.Supports; |
| 3 | +using Stack_Solver.Services.Layering; |
| 4 | +using Xunit; |
| 5 | + |
| 6 | + |
| 7 | +namespace Stack_Solver.Tests.Strategies |
| 8 | +{ |
| 9 | + public class BLFGenerationStrategyTests |
| 10 | + { |
| 11 | + [Fact] |
| 12 | + public void Generate_SingleSKU() |
| 13 | + { |
| 14 | + var skus = new List<SKU> |
| 15 | + { |
| 16 | + new() { |
| 17 | + SkuId = "A", |
| 18 | + Name = "Box A", |
| 19 | + Length = 50, |
| 20 | + Width = 30, |
| 21 | + Height = 20, |
| 22 | + Quantity = 500, |
| 23 | + Rotatable = true |
| 24 | + } |
| 25 | + }; |
| 26 | + |
| 27 | + var pallet = new Pallet("Standard Pallet", 800, 60, 14); |
| 28 | + |
| 29 | + var strategy = new BLFGenerationStrategy(); |
| 30 | + var options = new GenerationOptions { }; |
| 31 | + |
| 32 | + var layers = strategy.Generate(skus, pallet, options); |
| 33 | + |
| 34 | + Assert.NotEmpty(layers); |
| 35 | + layers.Sort((l1, l2) => l1.Items.Count.CompareTo(l2.Items.Count)); |
| 36 | + Assert.Equal(32, layers.Last().Items.Count); |
| 37 | + } |
| 38 | + |
| 39 | + [Fact] |
| 40 | + public void Generate_MultipleSKUs() |
| 41 | + { |
| 42 | + var skus = new List<SKU> |
| 43 | + { |
| 44 | + new() { |
| 45 | + SkuId = "A", |
| 46 | + Name = "Box A", |
| 47 | + Length = 21, |
| 48 | + Width = 16, |
| 49 | + Height = 20, |
| 50 | + Quantity = 500, |
| 51 | + Rotatable = true |
| 52 | + }, |
| 53 | + new() { |
| 54 | + SkuId = "B", |
| 55 | + Name = "Box B", |
| 56 | + Length = 52, |
| 57 | + Width = 33, |
| 58 | + Height = 20, |
| 59 | + Quantity = 500, |
| 60 | + Rotatable = true |
| 61 | + } |
| 62 | + }; |
| 63 | + |
| 64 | + var pallet = new Pallet("Standard Pallet", 120, 100, 14); |
| 65 | + |
| 66 | + var strategy = new BLFGenerationStrategy(); |
| 67 | + var options = new GenerationOptions { }; |
| 68 | + |
| 69 | + var layers = strategy.Generate(skus, pallet, options); |
| 70 | + |
| 71 | + Assert.NotEmpty(layers); |
| 72 | + layers.Sort((l1, l2) => l1.Items.Count.CompareTo(l2.Items.Count)); |
| 73 | + Assert.Equal(33, layers.Last().Items.Count); |
| 74 | + layers.Sort((l1, l2) => l1.Metadata.Utilization.CompareTo(l2.Metadata.Utilization)); |
| 75 | + Assert.Equal(0.942, layers.Last().Metadata.Utilization, 3); |
| 76 | + } |
| 77 | + |
| 78 | + [Fact] |
| 79 | + public void Generate_ShouldRespectSKUQuantityLimits() |
| 80 | + { |
| 81 | + var skus = new List<SKU> |
| 82 | + { |
| 83 | + new SKU |
| 84 | + { |
| 85 | + SkuId = "X", |
| 86 | + Name = "Tiny Box", |
| 87 | + Length = 100, |
| 88 | + Width = 100, |
| 89 | + Height = 50, |
| 90 | + Quantity = 2, |
| 91 | + Rotatable = true |
| 92 | + } |
| 93 | + }; |
| 94 | + |
| 95 | + var pallet = new Pallet("Interesting Pallet", 300, 200, 14); |
| 96 | + var strategy = new BLFGenerationStrategy(); |
| 97 | + |
| 98 | + var layers = strategy.Generate(skus, pallet, new GenerationOptions { }); |
| 99 | + var totalPlaced = 0; |
| 100 | + |
| 101 | + foreach (var layer in layers) |
| 102 | + totalPlaced += layer.Items.Count(i => i.SkuType.SkuId == "X"); |
| 103 | + |
| 104 | + Assert.True(totalPlaced <= 2); |
| 105 | + } |
| 106 | + } |
| 107 | +} |
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