public static void BranchAndBoundTest_PlentyCapacity_EverythingIsTaken()
{
// Arrange
var items = new[] { 'A', 'B', 'C', 'D' };
var values = new[] { 18, 20, 14, 18 };
var weights = new[] { 2, 4, 6, 9 };
var capacity = 1000;
Func <char, int> weightSelector = x => weights[Array.IndexOf(items, x)];
Func <char, double> valueSelector = x => values[Array.IndexOf(items, x)];
// Act
var solver = new BranchAndBoundKnapsackSolver <char>();
var actualResult = solver.Solve(items, capacity, weightSelector, valueSelector);
// Assert
actualResult.Should().BeEquivalentTo(items);
}
public static void BranchAndBoundTest_NoItems_NothingTaken()
{
// Arrange
var items = Array.Empty <char>();
var values = Array.Empty <int>();
var weights = Array.Empty <int>();
var capacity = 15;
Func <char, int> weightSelector = x => weights[Array.IndexOf(items, x)];
Func <char, double> valueSelector = x => values[Array.IndexOf(items, x)];
// Act
var solver = new BranchAndBoundKnapsackSolver <char>();
var actualResult = solver.Solve(items, capacity, weightSelector, valueSelector);
// Assert
actualResult.Should().BeEmpty();
}
public static void BranchAndBoundTest_Example2_Success()
{
// Arrange
var items = new[] { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J' };
var values = new[] { 505, 352, 458, 220, 354, 414, 498, 545, 473, 543 };
var weights = new[] { 23, 26, 20, 18, 32, 27, 29, 26, 30, 27 };
var capacity = 67;
Func <char, int> weightSelector = x => weights[Array.IndexOf(items, x)];
Func <char, double> valueSelector = x => values[Array.IndexOf(items, x)];
// Act
var solver = new BranchAndBoundKnapsackSolver <char>();
var actualResult = solver.Solve(items, capacity, weightSelector, valueSelector);
// Assert
actualResult.Should().BeEquivalentTo('H', 'D', 'A');
}
