public void InsertionMutationShouldCreateANewRoute()
{
var settings = new GASettings();
var random = A.Fake <IRandom>();
var map = A.Dummy <Roteiro>();
var locals = GetLocals(6);
const int
indexTruck = 0,
indexLocalFrom = 1,
indexLocalTo = 0;
A.CallTo(() => random.NextDouble())
.ReturnsNextFromSequence(0, 0);
A.CallTo(() => random.Next(A <int> ._, A <int> ._))
.ReturnsNextFromSequence(
indexTruck,
indexLocalFrom,
indexLocalTo
);
var gen = new Genome(map, settings)
{
Trucks = new[] {
new Truck {
Locals = locals.Take(3).ToArray()
},
new Truck {
Locals = locals.Skip(3).ToArray()
},
new Truck {
Locals = Enumerable.Empty <Local>().ToArray()
}
}
};
var mutate = new InsertionMutation(settings, random);
var newGen = mutate.Apply(gen);
var expectLocals = newGen.Trucks[2].Locals;
A.CallTo(() => random.Next(0, 0)).MustHaveHappenedOnceExactly();
newGen.Trucks[0].Locals.Should().HaveCount(2);
newGen.Trucks[0].Locals.Should().NotContain(locals[1]);
newGen.Trucks[1].Locals.Should().HaveCount(3);
expectLocals.Should().ContainSingle();
expectLocals.Should().Contain(locals[1]);
}
public void InsertionMutationShouldNotCreateANewRoute()
{
var settings = new GASettings();
var random = A.Fake <IRandom>();
var map = A.Dummy <Roteiro>();
var locals = GetLocals(6);
const int
indexTruck = 0,
indexTruckDestination = 1,
indexLocalFrom = 1,
indexLocalTo = 2;
A.CallTo(() => random.NextDouble())
.ReturnsNextFromSequence(0, 1);
A.CallTo(() => random.Next(A <int> ._, A <int> ._))
.ReturnsNextFromSequence(
indexTruck,
indexTruckDestination,
indexLocalFrom,
indexLocalTo
);
var gen = new Genome(map, settings)
{
Trucks = new[] {
new Truck {
Locals = locals.Take(3).ToArray()
},
new Truck {
Locals = locals.Skip(3).ToArray()
},
new Truck {
Locals = Enumerable.Empty <Local>().ToArray()
}
}
};
var mutate = new InsertionMutation(settings, random);
var newGen = mutate.Apply(gen);
newGen.Trucks[indexTruck].Locals.Should().HaveCount(2);
newGen.Trucks[indexTruckDestination].Locals.Should().HaveCount(4);
newGen.Trucks[indexTruckDestination].Locals[indexLocalTo].Should().Be(locals[1]);
newGen.Trucks[2].Locals.Should().BeEmpty();
}