private void AssertGenericListMatches(IEnumerable actualEnumerable, IEnumerable <TListElement> expectedEnumerable)
{
if (actualEnumerable == null)
{
throw new ArgumentNullException("actualEnumerable",
"Actual and expected are not equal (actual was null).");
}
if (expectedEnumerable == null)
{
throw new ArgumentNullException("expectedEnumerable",
"Actual and expected are not equal (expected was null).");
}
var actualList = actualEnumerable.Cast <object>().ToList();
var expectedList = expectedEnumerable.ToList();
if (actualList.Count != expectedList.Count)
{
throw new ApplicationException(String.Format("Actual count ({0}) does not equal expected count ({1})", actualList.Count, expectedList.Count));
}
var equalsFunc = (EntityEqualityComparer != null)
? new Func <object, object, bool>((a, b) => EntityEqualityComparer.Equals(a, b))
: new Func <object, object, bool>(Equals);
var result = actualList.FirstOrDefault(item => actualList.Count(x => equalsFunc(item, x)) != expectedList.Count(x => equalsFunc(item, x)));
if (result != null)
{
throw new ApplicationException(String.Format("Actual count of item {0} ({1}) does not equal expected item count ({2})", result, actualList.Count(x => x == result), expectedList.Count(x => (object)x == result)));
}
}
static void Main(string[] args)
{
// More specific = less specific type
IEqualityComparer <User> entityComparer = new EntityEqualityComparer();
var areEqual = entityComparer.Equals(user1, user2);
Console.WriteLine($"user1 {(areEqual ? "==" : "!=")} user2");
var user1ref = user1;
areEqual = entityComparer.Equals(user1ref, user1);
Console.WriteLine($"user1ref {(areEqual ? "==" : "!=")} user1");
Entity entity1ref = user1;
// Downcast
areEqual = (entityComparer as IEqualityComparer <Entity>).Equals(entity1ref, user1);
Console.WriteLine($"entity1ref {(areEqual ? "==" : "!=")} user1");
}
public void UserCanBeComparedWithEntityComparer()
{
IEqualityComparer<User> entityComparer = new EntityEqualityComparer();
var user1 = new User();
var user2 = new User();
entityComparer.Equals(user1, user2)
.Should().BeFalse();
}
public void UserCanBeComparedWithEntityComparer()
{
IEqualityComparer <User> entityComparer = new EntityEqualityComparer();
var user1 = new User();
var user2 = new User();
entityComparer.Equals(user1, user2)
.Should().BeFalse();
}
private void AssertGenericListMatches(IEnumerable actualEnumerable, IEnumerable <TListElement> expectedEnumerable)
{
if (actualEnumerable == null)
{
throw new ArgumentNullException("actualEnumerable",
"Actual and expected are not equal (actual was null).");
}
if (expectedEnumerable == null)
{
throw new ArgumentNullException("expectedEnumerable",
"Actual and expected are not equal (expected was null).");
}
List <object> actualList = new List <object>();
foreach (var item in actualEnumerable)
{
actualList.Add(item);
}
var expectedList = expectedEnumerable.ToList();
if (actualList.Count != expectedList.Count)
{
throw new ApplicationException("Actual count does not equal expected count");
}
var equalsFunc = (EntityEqualityComparer != null)
? new Func <object, object, bool>((a, b) => EntityEqualityComparer.Equals(a, b))
: new Func <object, object, bool>(Equals);
for (var i = 0; i < actualList.Count; i++)
{
if (equalsFunc(actualList[i], expectedList[i]))
{
continue;
}
var message = String.Format("Expected '{0}' but got '{1}' at position {2}",
expectedList[i],
actualList[i],
i);
throw new ApplicationException(message);
}
}
static void Main(string[] args)
{
IEntityRepository <Entity> entityRepository = new EntityRepository();
IEntityRepository <Entity> userRepository = new UserRepository();
IEqualityComparer <User> entityComparer = new EntityEqualityComparer();
var user1 = new User();
var user2 = new User();
var result = entityComparer.Equals(user1, user2);
if (result)
{
Console.WriteLine("ERROR");
}
Console.ReadLine();
}
