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swaps-enhancements #19

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bustikiller merged 4 commits from swaps-enhancements into main 2024-08-01 18:59:56 +00:00
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1 changed files with 39 additions and 14 deletions
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53
spec/services/tables/swap_spec.rb
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@ -3,13 +3,6 @@ require 'rails_helper'
module Tables module Tables
RSpec.describe Swap do RSpec.describe Swap do
describe '#each' do describe '#each' do
let(:initial_solution) do
Distribution.new(min_per_table: 2, max_per_table: 2).tap do |distribution|
distribution.tables << %i[a b]
distribution.tables << %i[c d]
end
end
let(:swaps) do let(:swaps) do
acc = [] acc = []
described_class.new(initial_solution).each do |solution| described_class.new(initial_solution).each do |solution|
@ -18,13 +11,45 @@ module Tables
acc acc
end end
it 'yields all possible swaps between the tables' do context 'when there are two tables with two people each' do
expect(swaps).to contain_exactly( let(:initial_solution) do
[%i[a d], %i[c b]], Distribution.new(min_per_table: 2, max_per_table: 2).tap do |distribution|
[%i[b c], %i[d a]], distribution.tables << %i[a b]
[%i[a c], %i[d b]], distribution.tables << %i[c d]
[%i[b d], %i[c a]] end
) end
it 'yields all possible swaps between the tables' do
expect(swaps).to contain_exactly(
[%i[a d], %i[c b]],
[%i[b c], %i[d a]],
[%i[a c], %i[d b]],
[%i[b d], %i[c a]]
)
end
end
context 'when there are two tables with three people each' do
let(:initial_solution) do
Distribution.new(min_per_table: 3, max_per_table: 3).tap do |distribution|
distribution.tables << %i[a b c]
distribution.tables << %i[d e f]
end
end
it 'yields all possible swaps between the tables' do
expect(swaps).to contain_exactly(
[%i[b c d], %i[e f a]],
[%i[b c e], %i[f d a]],
[%i[b c f], %i[d e a]],
[%i[c a d], %i[e f b]],
[%i[c a e], %i[f d b]],
[%i[c a f], %i[d e b]],
[%i[a b d], %i[e f c]],
[%i[a b e], %i[f d c]],
[%i[a b f], %i[d e c]]
)
end
end end
end end
end end