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easy-box-packer_spec.rb
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easy-box-packer_spec.rb
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require 'easy-box-packer'
require 'pry'
describe '.pack' do
it do
packings = EasyBoxPacker.pack(
container: { dimensions: [15, 20, 13], weight_limit: 50 },
items: [
{ dimensions: [2, 3, 5], weight: 47 },
{ dimensions: [2, 3, 5], weight: 47 },
{ dimensions: [3, 3, 1], weight: 24 },
{ dimensions: [1, 1, 4], weight: 7 },
]
)
expect(packings[:packings].length).to eql(3)
expect(packings[:packings][0][:weight]).to eql(47.0)
expect(packings[:packings][0][:placements].length).to eql(1)
expect(packings[:packings][0][:placements][0][:dimensions]).to eql([2, 3, 5])
expect(packings[:packings][0][:placements][0][:position]).to eql([0, 0, 0])
expect(packings[:packings][1][:weight]).to eql(47.0)
expect(packings[:packings][1][:placements].length).to eql(1)
expect(packings[:packings][1][:placements][0][:dimensions]).to eql([2, 3, 5])
expect(packings[:packings][1][:placements][0][:position]).to eql([0, 0, 0])
expect(packings[:packings][2][:weight]).to eql(31.0)
expect(packings[:packings][2][:placements].length).to eql(2)
expect(packings[:packings][2][:placements][0][:dimensions]).to eql([1, 1, 4])
expect(packings[:packings][2][:placements][0][:position]).to eql([0, 0, 0])
expect(packings[:packings][2][:placements][1][:dimensions]).to eql([1, 3, 3])
expect(packings[:packings][2][:placements][1][:position]).to eql([0, 1, 0])
end
it 'no weight given' do
packings = EasyBoxPacker.pack(
container: { dimensions: [13, 15, 20] },
items: [
{ dimensions: [2, 3, 5] },
{ dimensions: [2, 3, 5] },
{ dimensions: [3, 3, 1] },
{ dimensions: [1, 1, 4] },
]
)
expect(packings[:packings].length).to eql(1)
expect(packings[:packings][0][:weight]).to eql(0.0)
expect(packings[:packings][0][:placements].length).to eql(4)
end
context 'it can be packed' do
it 'case 1' do
packings = EasyBoxPacker.pack(
container: { dimensions: [40, 34, 88] },
items: [
{ dimensions: [40, 30, 34] },
{ dimensions: [40, 30, 34] },
{ dimensions: [40, 28, 30] }
]
)
expect(packings[:packings].length).to eql(1)
expect(packings[:packings][0][:weight]).to eql(0.0)
expect(packings[:packings][0][:placements].length).to eql(3)
end
it 'case 1 - will not be affected by different order' do
packings = EasyBoxPacker.pack(
container: { dimensions: [40, 34, 88] },
items: [
{ dimensions: [40, 30, 34] },
{ dimensions: [40, 28, 30] },
{ dimensions: [40, 30, 34] }
]
)
expect(packings[:packings].length).to eql(1)
expect(packings[:packings][0][:weight]).to eql(0.0)
expect(packings[:packings][0][:placements].length).to eql(3)
end
it 'case 2' do
packings = EasyBoxPacker.pack(
container: { dimensions: [40, 34, 13] },
items: [
{ dimensions: [40, 10, 34] },
{ dimensions: [40, 2, 30] },
{ dimensions: [40, 3, 4] },
{ dimensions: [40, 1, 30] }
]
)
expect(packings[:packings].length).to eql(1)
end
it 'case 3' do
packings = EasyBoxPacker.pack(
container: { dimensions: [10, 10, 10] },
items: Array.new(1000) {{ dimensions: [1, 1, 1] }}
)
expect(packings[:packings].length).to eql(1)
end
it 'case 4' do
packings = EasyBoxPacker.pack(
container: { dimensions: [20, 30, 10] },
items: [
{ dimensions: [40, 10, 34] },
{ dimensions: [10, 20, 10] },
{ dimensions: [20, 20, 5] },
{ dimensions: [20, 20, 4] },
{ dimensions: [20, 20, 1] }
]
)
expect(packings[:packings].length).to eql(1)
expect(packings[:errors]).to eql(["Item: {:dimensions=>[40, 10, 34]} cannot be placed in container"])
end
it 'case 5' do
packings = EasyBoxPacker.pack(
container: { dimensions: [20, 30, 10] },
items: [
{ dimensions: [10, 20, 11] },
{ dimensions: [20, 20, 5] },
{ dimensions: [20, 20, 4] },
{ dimensions: [20, 20, 1] }
]
)
expect(packings[:packings].length).to eql(2)
end
it 'case 6' do
packings = EasyBoxPacker.pack(
container: { dimensions: [39, 33.5, 58] },
items: [
{dimensions: [26.0, 26.0, 26.5]},
{dimensions: [18.0, 23.0, 39.0]},
{dimensions: [39.0, 14.0, 33.5]}
]
)
expect(packings[:packings].length).to eql(1)
end
it 'case 7' do
packings = EasyBoxPacker.pack(
container: { dimensions: [139, 50, 40] },
items: [
{dimensions: [10, 30, 139]},
{dimensions: [16, 24, 105]},
{dimensions: [12, 50, 103]}
]
)
expect(packings[:packings].length).to eql(1)
end
it 'case 8' do
packings = EasyBoxPacker.pack(
container: { dimensions: [46.5, 32, 15] },
items: [
{dimensions: [7, 8, 9]},
{dimensions: [2, 2, 3]},
{dimensions: [5, 31, 45]}
]
)
expect(packings[:packings].length).to eql(1)
end
end
end
describe '.find_smallest_container' do
it 'can get smallest container- with 10 items' do
container = EasyBoxPacker.find_smallest_container(
items: Array.new(10) {{ dimensions: [1, 1, 1] }}
)
expect(container).to eql([2.0, 2.0, 3.0])
end
it 'can get smallest container - with 100 items' do
container = EasyBoxPacker.find_smallest_container(
items: Array.new(100) {{ dimensions: [1, 1, 1] }}
)
expect(container).to eql([4.0, 5.0, 5.0])
end
it 'can get smallest container - with 100 items' do
container = EasyBoxPacker.find_smallest_container(
items: Array.new(100) {{ dimensions: [10, 5, 4] }}
)
expect(container).to eql([26.0, 29.0, 36.0])
end
it 'can get smallest container - with 100 items' do
container = EasyBoxPacker.find_smallest_container(
items: Array.new(100) {{ dimensions: [4, 5, 5] }}
)
expect(container).to eql([21.0, 24.0, 26.0])
end
it 'can get smallest container - with 1000 items' do
container = EasyBoxPacker.find_smallest_container(
items: Array.new(1000) {{ dimensions: [1, 1, 1] }}
)
expect(container).to eql([10.0, 10.0, 10.0])
end
it 'case 1' do
container = EasyBoxPacker.find_smallest_container(
items: [
{ dimensions: [4, 7, 9] },
{ dimensions: [5, 8, 9] },
{ dimensions: [11, 20, 40] },
{ dimensions: [1, 2, 3] }
]
)
expect(container).to eql([11.0, 20.0, 45.0])
end
it 'case 2' do
container = EasyBoxPacker.find_smallest_container(
items: [
{ dimensions: [4, 7, 9] },
{ dimensions: [3, 2, 1] }
]
)
expect(container).to eql([4.0, 7.0, 10.0])
end
it 'case 3' do
container = EasyBoxPacker.find_smallest_container(
items: [
{ dimensions: [4, 7, 9] },
{ dimensions: [3, 2, 1] },
{ dimensions: [7, 7, 5] }
]
)
expect(container).to eql([5.0, 7.0, 16.0])
end
it 'case 5' do
container = EasyBoxPacker.find_smallest_container(
items: [
{ dimensions: [10, 20, 11] },
{ dimensions: [20, 20, 5] },
{ dimensions: [20, 20, 4] },
{ dimensions: [20, 20, 1] }
]
)
expect(container).to eq([10.0, 20.0, 31.0])
packings = EasyBoxPacker.pack(
container: { dimensions: [10.0, 20.0, 31.0] },
items: [
{ dimensions: [10, 20, 11] },
{ dimensions: [20, 20, 5] },
{ dimensions: [20, 20, 4] },
{ dimensions: [20, 20, 1] }
]
)
expect(packings[:packings].length).to eql(1)
end
it 'case 6' do
container = EasyBoxPacker.find_smallest_container(
items: [
{ dimensions: [10, 20, 11] }
]
)
expect(container).to eq([10.0, 20.0, 11.0])
end
it 'case 7' do
container = EasyBoxPacker.find_smallest_container(
items: [
{dimensions: [110, 30, 10]}, {dimensions: [110, 20, 10]}, {dimensions: [110, 10, 5]},
{dimensions: [110, 30, 10]}, {dimensions: [110, 20, 10]}, {dimensions: [110, 10, 5]},
{dimensions: [110, 30, 10]}, {dimensions: [110, 20, 10]}, {dimensions: [110, 10, 5]}
]
)
expect(container).to eq([30.0, 60.0, 110.0])
end
it 'case 8' do
container = EasyBoxPacker.find_smallest_container(
items: [
{dimensions: [26.0, 26.0, 26.5]},
{dimensions: [18.0, 23.0, 39.0]},
{dimensions: [39.0, 14.0, 33.5]}
]
)
expect(container).to eq([33.5, 39.0, 58.0])
end
it 'case 9' do
container = EasyBoxPacker.find_smallest_container(
items: Array.new(67) {{ dimensions: [36.0, 27.0, 0.3] }}
)
expect(container).to eql([36.0, 27.0, 20.1])
end
it 'case 10' do
container = EasyBoxPacker.find_smallest_container(
items: [
{ dimensions: [13, 23.5, 48] },
{ dimensions: [13, 23.5, 48] },
{ dimensions: [13, 23.5, 48] }
]
)
expect(container).to eql([48, 23.5, 39.0])
end
it 'case 11' do
container = EasyBoxPacker.find_smallest_container(
items: [
{ dimensions: [73, 8, 4] },
{ dimensions: [39, 34, 4] },
{ dimensions: [40, 7, 5] },
{ dimensions: [21, 8, 7] },
{ dimensions: [27, 27, 17] }
]
)
expect(container).to eql([34.0, 34.0, 79.0])
end
it 'case 12' do
container = EasyBoxPacker.find_smallest_container(
items: [
{ dimensions: [22, 19, 27] },
{ dimensions: [22, 19, 27] },
{ dimensions: [22, 19, 27] },
{ dimensions: [22, 19, 27] },
{ dimensions: [22, 19, 27] }
]
)
expect(container).to eql([27.0, 46.0, 57.0])
end
end