Fix 476

[3lvis]

The bug is caused by the following line:

Sync/Source/Sync/NSManagedObject+Sync.swift

Line 324 in 87cfe00

childPredicate = NSPredicate(format: "ANY %K IN %@ OR %K = %@", entity.sync_localPrimaryKey(), childIDsObject, inverseEntityName, self)

When creating the predicate Core Data expects that the array of elements in the IN closure to have the same type have as the ones inserted in Core Data. In this specific case, we have an array of Strings coming from the JSON and locally an array of Dates, this causes Core Data to crash when trying to execute the fetch request using the provided predicate since it expects an array of Dates from the JSON as well.

[3lvis]

I'm thinking this bug probably applies for many to many as well since the predicate is "ANY %K IN %@" but that could be solved in a separate PR.

Sync/Source/Sync/NSManagedObject+Sync.swift

Lines 310 to 317 in 87cfe00

	if manyToMany {
	childOperations.remove(.delete)
	if ((childIDs as Any) as AnyObject).count > 0 {
	guard let entity = NSEntityDescription.entity(forEntityName: childEntityName, in: context) else { fatalError() }
	guard let childIDsObject = childIDs as? NSObject else { fatalError() }
	childPredicate = NSPredicate(format: "ANY %K IN %@", entity.sync_localPrimaryKey(), childIDsObject)
	}
	} else {