public List <T> ChangeList(List <T> items, int minSize, int maxSize = 0, DataReferences references = null)
{
maxSize = Math.Max(minSize, maxSize);
int size = RandomInteger.NextInteger(minSize, maxSize);
for (int index = 0; index < size; index++)
{
int choice = RandomInteger.NextInteger(5);
if (choice == 1 && items.Count > 0)
{
var pos = RandomInteger.NextInteger(items.Count);
var item = Delete(items[pos], references);
if (item == null)
{
items.RemoveAt(pos);
}
}
else if (choice == 3)
{
var item = Create();
items.Add(item);
}
else if (items.Count > 0)
{
var item = items[RandomInteger.NextInteger(items.Count)];
Update(item, references);
}
}
return(items);
}
public List <T> UpdateList(List <T> items, int minSize, int maxSize = 0, DataReferences references = null)
{
maxSize = Math.Max(minSize, maxSize);
int size = RandomInteger.NextInteger(minSize, maxSize);
for (int index = 0; items.Count > 0 && index < size; index++)
{
var item = items[RandomInteger.NextInteger(items.Count)];
Update(item, references);
}
return(items);
}
public List <T> AppendList(List <T> items, int minSize, int maxSize = 0, DataReferences references = null)
{
maxSize = Math.Max(minSize, maxSize);
int size = RandomInteger.NextInteger(minSize, maxSize);
for (int index = 0; index < size; index++)
{
var item = Create();
items.Add(item);
}
return(items);
}
public List <T> CreateList(int minSize, int maxSize = 0, DataReferences references = null)
{
maxSize = Math.Max(minSize, maxSize);
int size = RandomInteger.NextInteger(minSize, maxSize);
List <T> items = new List <T>();
for (int index = 0; index < size; index++)
{
items.Add(Create(references));
}
return(items);
}
public List <T> ReduceList(List <T> items, int minSize, int maxSize = 0, DataReferences references = null)
{
maxSize = Math.Max(minSize, maxSize);
int size = RandomInteger.NextInteger(minSize, maxSize);
for (int index = 0; items.Count > 0 && index < size; index++)
{
var pos = RandomInteger.NextInteger(items.Count);
var item = Delete(items[pos], references);
if (item == null)
{
items.RemoveAt(pos);
}
}
return(items);
}
public List <T> DistortList(List <T> items, int minSize, int maxSize = 0, float probability = 1, DataReferences references = null)
{
maxSize = Math.Max(minSize, maxSize);
int size = RandomInteger.NextInteger(minSize, maxSize);
for (int index = 0; items.Count > 0 && index < size; index++)
{
if (RandomBoolean.Chance(probability * 100, 100))
{
var itemIndex = RandomInteger.NextInteger(items.Count);
items[itemIndex] = Distort(items[itemIndex]);
}
}
return(items);
}
public abstract T Delete(T item, DataReferences references = null);
public abstract T Update(T item, DataReferences references = null);
public abstract T Create(DataReferences references = null);