public void Operate_OneMutationDesired_ZeroMutationChance_ReturnsOriginalDv()
{
var mutator = new MutationAddRandomIntegerFromSet(
new[] { 1, 3 },
0, 1);
var newDv = mutator.Operate(testDv);
Assert.Equal(testDv, newDv);
}
public void Operate_ManyMutationsDesired_ReturnsMutatedDv()
{
var mutator = new MutationAddRandomIntegerFromSet(
new[] { 2, 7 },
1, 10);
var newDv = mutator.Operate(testDv);
Assert.NotEqual(testDv, newDv);
Assert.Equal(testDv.Count, newDv.Count);
Assert.True(newDv.Where((v, i) => v == testDv.ElementAt(i)).Count()
<= testDv.Count - 1);
}
public void Operate_OneMutationDesired_ReturnsMutatedDv()
{
var mutator = new MutationAddRandomIntegerFromSet(
new[] { 2 },
1, 1);
var newDv = mutator.Operate(testDv);
Assert.NotEqual(testDv, newDv);
Assert.Equal(testDv.Count, newDv.Count);
var changedValue = newDv.Where((v, i) => (double)v != (double)testDv.ElementAt(i)).Select(d => (double)d);
Assert.True(changedValue.Count() == 1);
var oldValue = testDv.Where((v, i) => (double)v != (double)newDv.ElementAt(i)).Select(d => (double)d);
Assert.True(Math.Abs(Math.Abs(oldValue.First() - changedValue.First()) - 2.0) < 1e-8);
}