public void CustomFactoryNongenericMethod()
{
var factory = new CustomFactory(_comparerB);
var comparer = factory.GetObjectsComparer(typeof(B));
var b1 = new B();
var b2 = new B();
_comparerB.CalculateDifferences(b1, b2).Returns(new List <Difference>());
var isEqual = comparer.Compare(typeof(B), b1, b2);
Assert.IsTrue(isEqual);
_comparerB.Received().CalculateDifferences(b1, b2);
}
public override IEnumerable <Difference> CalculateDifferences(Type type, object obj1, object obj2)
{
if (!type.InheritsFrom(typeof(IEnumerable <>)))
{
throw new ArgumentException("Invalid type");
}
if (!Settings.EmptyAndNullEnumerablesEqual &&
(obj1 == null || obj2 == null) && obj1 != obj2)
{
yield break;
}
obj1 = obj1 ?? Enumerable.Empty <T>();
obj2 = obj2 ?? Enumerable.Empty <T>();
if (!obj1.GetType().InheritsFrom(typeof(IEnumerable <T>)))
{
throw new ArgumentException(nameof(obj1));
}
if (!obj2.GetType().InheritsFrom(typeof(IEnumerable <T>)))
{
throw new ArgumentException(nameof(obj2));
}
var list1 = ((IEnumerable <T>)obj1).ToList();
var list2 = ((IEnumerable <T>)obj2).ToList();
if (list1.Count != list2.Count)
{
if (!type.InheritsFrom(typeof(ICollection <>)) && !type.GetTypeInfo().IsArray)
{
yield return(new Difference("", list1.Count.ToString(), list2.Count.ToString(),
DifferenceTypes.NumberOfElementsMismatch));
}
yield break;
}
for (var i = 0; i < list2.Count; i++)
{
foreach (var failure in _comparer.CalculateDifferences(list1[i], list2[i]))
{
yield return(failure.InsertPath($"[{i}]"));
}
}
}
public override IEnumerable <Difference> CalculateDifferences(Type type, object obj1, object obj2)
{
if (!type.InheritsFrom(typeof(Array)))
{
throw new ArgumentException("Invalid type");
}
if (!Settings.EmptyAndNullEnumerablesEqual &&
(obj1 == null || obj2 == null) && obj1 != obj2)
{
yield break;
}
if (obj1 != null && !obj1.GetType().InheritsFrom(typeof(Array)))
{
throw new ArgumentException(nameof(obj1));
}
if (obj2 != null && !obj2.GetType().InheritsFrom(typeof(Array)))
{
throw new ArgumentException(nameof(obj2));
}
var array1 = (Array)obj1 ?? Array.CreateInstance(typeof(T), new int[type.GetArrayRank()]);
var array2 = (Array)obj2 ?? Array.CreateInstance(typeof(T), new int[type.GetArrayRank()]);
if (array1.Rank != array2.Rank)
{
yield return(new Difference("Rank", array1.Rank.ToString(), array2.Rank.ToString()));
yield break;
}
var dimensionsFailure = false;
for (var i = 0; i < array1.Rank; i++)
{
var length1 = array1.GetLength(i);
var length2 = array2.GetLength(i);
// ReSharper disable once InvertIf
if (length1 != length2)
{
dimensionsFailure = true;
yield return(new Difference($"Dimension{i}", length1.ToString(), length2.ToString()));
}
}
if (dimensionsFailure)
{
yield break;
}
for (var i = 0; i < array1.Length; i++)
{
var indecies = IndexToCoordinates(array1, i);
foreach (var failure in _comparer.CalculateDifferences((T)array1.GetValue(indecies), (T)array2.GetValue(indecies)))
{
yield return(failure.InsertPath($"[{string.Join(",", indecies)}]"));
}
}
}
