Core data returns 0 entities on mainQueueConcurrencyType context

Code Block 
public private(set) lazy var masterContext: ManagedObjectContext = { [weak self] in
        let context = ManagedObjectContext(concurrencyType: .privateQueueConcurrencyType)
        context.persistentStoreCoordinator = self?.persistentStoreCoordinator
        context.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy
        return context
    }()
    public lazy var viewContext: ManagedObjectContext = { [weak self] in
        let context = ManagedObjectContext(concurrencyType: .mainQueueConcurrencyType)
        context.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy
        context.parent = self?.masterContext
        return context
    }()
    public var newTemporaryContext: ManagedObjectContext {
        let context = ManagedObjectContext(concurrencyType: .privateQueueConcurrencyType)
        context.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy
        context.parent = viewContext
        return context
    }

Code Block 
override func setUp() {
        super.setUp()
        let bundle = Bundle(for: FilterTests.self)
        kangaroo = KangarooStore(name: "TestDB", storageType: .memory, bundle: bundle)
        kangaroo.loadStoreSync()
        kangaroo.saveSync(in: .view, block: { context in
            let entity2 = TestEntity(in: context)
            entity2.id = 2
            entity2.name = "entity2"
            entity2.lastname = "test"
            let entity1 = TestEntity(in: context)
            entity1.id = 1
            entity1.name = "entity1"
            entity1.lastname = "test"
            let entity5 = TestEntity(in: context)
            entity5.id = 5
            entity5.name = "entity5"
            entity5.lastname = "test"
            let entity6 = TestEntity(in: context)
            entity6.id = 6
            entity6.name = "entity6"
            entity6.lastname = "test"
        })
    }
func testFilterInViewContext() {
        do {
            let predicate = NSPredicate(format: "id = %@", 1 as NSNumber)
            let query = Query<TestEntity>(in: kangaroo.viewContext).filtered(using: predicate)
            let entities = query.execute()
            XCTAssertEqual(entities.count, 1)
            XCTAssertEqual(entities[0].id, 1)
            XCTAssertEqual(entities[0].name, "entity1")
        }
    }