StorageKit - Reproduce Issue https://github.com/StorageKit/StorageKit/issues/6

SpyStorageContext.swift

import Foundation
import StorageKit
import RealmSwift

final class SpyStorageContext: StorageContext {

	fileprivate(set) var createCalledCount = 0
	fileprivate(set) var createTypes = [Object.Type]()

	fileprivate(set) var addCalledCount = 0
	fileprivate(set) var addEntityArguments = [StorageEntityType]()
}

extension SpyStorageContext {
	func create<T: StorageEntityType>() throws -> T? {
		guard let entityToCreate = T.self as? Object.Type else { return nil }

		createCalledCount += 1
		createTypes.append(entityToCreate)

		return entityToCreate.init() as? T
	}

	func add<T: StorageEntityType>(_ entity: T) throws {
		addCalledCount += 1
		addEntityArguments.append(entity)
	}

	func add<T>(_ entities: [T]) throws where T : StorageEntityType {}
}

extension SpyStorageContext {
	func update(transform: @escaping () -> Void) throws {}
}

extension SpyStorageContext {
	func fetch<T: StorageEntityType>(predicate: NSPredicate?, sortDescriptors: [SortDescriptor]?, completion: @escaping FetchCompletionClosure<T>) {}
}

extension SpyStorageContext {
	func delete<T: StorageEntityType>(_ entity: T) throws {}
	func delete<T: StorageEntityType>(_ entities: [T]) throws {}
	func deleteAll<T: StorageEntityType>(_ entityType: T.Type) throws {}
}