         XCTAssertEqual(spy.finishTransactionCalledCount, 0)
     }
 
+    
     func makeTestPaymentTransaction(productIdentifier: String, transactionState: SKPaymentTransactionState) -> TestPaymentTransaction {
 
         let testProduct = TestProduct(productIdentifier: productIdentifier)

        XCTAssertEqual(spy.finishTransactionCalledCount, 0)
    }

    func testProcessTransactions_when_onePurchasingTransaction_then_noFinishedTransactions_noCallback_oneTransactionsRemaining() {

        let productIdentifier = "com.SwiftyStoreKit.product1"
        let testProduct = TestProduct(productIdentifier: productIdentifier)

        XCTAssertEqual(spy.finishTransactionCalledCount, 4)
    }

    func testProcessTransactions_when_atomically_zeroTransactions_then_noFinishedTransactions_noCallback_noTransactionsRemaining() {

        let transactions: [TestPaymentTransaction] = []

