public static IComparer <Employee> SelectComparison(CompareWith option)
{
switch (option)
{
case CompareWith.FirstName:
return(new EmployeeCompareWithFirstName());
case CompareWith.LastName:
return(new EmployeeCompareWithLastName());
case CompareWith.Id:
return(new EmployeeCompareWithID());
}
throw new System.InvalidOperationException();
}
/// <summary>
/// Determines whether two objects are equal.
/// </summary>
/// <param name="expected">The expected value.</param>
/// <param name="actual">The actual value.</param>
/// <returns></returns>
private bool ObjectsEqual(object expected, object actual)
{
if (expected == null && actual == null)
{
return(true);
}
if (expected == null || actual == null)
{
return(false);
}
Type expectedType = expected.GetType();
Type actualType = actual.GetType();
if (expectedType.IsArray && actualType.IsArray && !CompareAsCollection)
{
return(ArraysEqual((Array)expected, (Array)actual));
}
if (expected is ICollection && actual is ICollection)
{
return(CollectionsEqual((ICollection)expected, (ICollection)actual));
}
if (expected is Stream && actual is Stream)
{
return(StreamsEqual((Stream)expected, (Stream)actual));
}
if (CompareWith != null)
{
return(CompareWith.Compare(expected, actual) == 0);
}
if (Numerics.IsNumericType(expected) && Numerics.IsNumericType(actual))
{
return(Numerics.AreEqual(expected, actual, Tolerance));
}
if (expected is string && actual is string)
{
return(string.Compare((string)expected, (string)actual, CaseInsensitive, CultureInfo.CurrentCulture) == 0);
}
return(expected.Equals(actual));
}