Issue with DateTime/DateTimeOffset in DataContractJsonSerializer - Solved

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.NET

C#5.0

NUnit

serialization

, +

It appears that DataContractJsonSerializer uses different precision to NetDataContractSerializer for DateTime. Testing of serialise-deserialise failed for a DateTimeOffset property if used strict equality or testing to the nearest Tick.

The following code snippet fixed the issue (_entity1 was the original and _entity4 was the result of serialise and then deserialise):

var type = typeof (Entity);
            var properties = type.GetProperties(
                BindingFlags.NonPublic |
                BindingFlags.Instance |
                BindingFlags.Public);
foreach (var property in properties)
            {
                if (property.PropertyType != typeof(DateTimeOffset)) // issues with DateTime in JSON
                {
                    Assert.AreEqual(property.GetValue(_entity1), property.GetValue(_entity4));
                }
                else
                {   // different at level of Ticks, but not an issue
                    Assert.That(property.GetValue(_entity1),
                        Is.EqualTo(property.GetValue(_entity4)).Within(1).Milliseconds);
                }
            }