Initialize Tables::WheelSwap class

app/services/tables/wheel_swap.rb

@@ -0,0 +1,16 @@
+# Copyright (C) 2024-2025 LibreWeddingPlanner contributors
+
+# frozen_string_literal: true
+
+module Tables
+  class WheelSwap
+    private attr_reader :initial_solution
+    def initialize(initial_solution)
+      @initial_solution = initial_solution
+    end
+
+    def call
+      @initial_solution.deep_dup
+    end
+  end
+end

spec/services/tables/wheel_swap_spec.rb

@@ -0,0 +1,21 @@
+require 'rails_helper'
+
+module Tables
+  RSpec.describe WheelSwap do
+    context "when the solution has three tables" do
+      let(:initial_solution) do
+        Distribution.new(min_per_table: 3, max_per_table: 3).tap do |distribution|
+          distribution.tables << Set[:a, :b, :c].to_table
+          distribution.tables << Set[:d, :e, :f].to_table
+          distribution.tables << Set[:g, :h, :i].to_table
+        end
+      end
+    
+      it "swaps a random guest from each table with a guest from another table", :aggregate_failures do
+        result = described_class.new(initial_solution).call
+        
+        expect(result.tables.size).to eq(3)
+      end
+    end
+  end
+end