public void ValueConflictThrows()
{
var entity = new TestEntity
{
Property = "prop"
};
using (var context = InMemoryContextBuilder.Build <TestDataContext>())
{
context.Add(entity);
context.SaveChanges();
}
using (var context = InMemoryContextBuilder.Build <TestDataContext>())
{
var update = new TestEntity
{
Id = entity.Id,
Property = "Something new",
Timestamp = RowVersion.New()
};
context.Attach(update);
context.Entry(update).Property("Property").IsModified = true;
var exception = Assert.Throws <DbUpdateConcurrencyException>(() => context.SaveChanges());
Approvals.Verify(exception.Message);
}
}
void Validate(Func <object, byte[]> getter, Action <object, byte[]> setter, IProperty primaryKey, object primaryKeyValue, List <object> objects)
{
byte[] rowVersion;
var first = objects.First();
var exceptionSuffix = $" Type: {first.GetType().FullName}. {primaryKey.Name}: {primaryKeyValue}.";
//If seen
var version = getter(first);
if (seen.Any(x => ReferenceEquals(x, first)))
{
rowVersion = version;
if (rowVersion == null)
{
throw new Exception($"Row version has been incorrectly set to null. {exceptionSuffix}");
}
}
//If not seen
else
{
if (version != null)
{
throw new Exception($"The first save must have a null RowVersion. {exceptionSuffix}");
}
rowVersion = RowVersion.New();
setter(first, rowVersion);
seen.Add(first);
}
foreach (var o in objects.Skip(1))
{
var bytes = getter(o);
if (bytes != null && bytes.SequenceEqual(rowVersion))
{
rowVersion = RowVersion.New();
setter(o, rowVersion);
}
}
}
void Validate(Func <object, byte[]> getter, Action <object, byte[]> setter, List <object> objects)
{
byte[] rowVersion;
var first = objects.First();
var version = getter(first);
if (seen.Any(x => ReferenceEquals(x, first)))
{
rowVersion = version;
if (rowVersion == null)
{
throw new Exception("Row version has been incorrectly set to null");
}
}
//If not seen
else
{
if (version != null)
{
throw new Exception("The first save must have a null RowVersion");
}
rowVersion = RowVersion.New();
setter(first, rowVersion);
seen.Add(first);
}
foreach (var o in objects.Skip(1))
{
var bytes = getter(o);
if (bytes != null && bytes.SequenceEqual(rowVersion))
{
rowVersion = RowVersion.New();
setter(o, rowVersion);
}
}
}
