如何获取输入状态以进行流量测试 [英] How to get Input states for flow testing

问题描述

我有两个流程，说他们的名字是：

I have two flows, say their names are:

• flow_out（需要1个输入状态）


• flow_in（上面输入的
  状态/交易是由此存储的）

我的flow（flow_out）有1输入状态和1输出状态。输入状态是从流（flow_out）中的保管库中检索的，并且所有各方（在测试MockNetwork中目前有3个参与方）已在合同中验证了输入状态。

My flow(flow_out) have 1 input state and 1 output state. The input state is retrieved from vault in the flow(flow_out) and the same is verified in contract by all the parties(Currrently 3 parties in test MockNetwork).

现在，测试用例失败，因为我的流程（flow_out）无法获得该状态，因为该事务从未发生（这是另一个流程的一部分，即flow_in）。

Now the test case is failing as my flow(flow_out) is unable to get that state, as that transaction never occurred(it's part of a different flow i.e flow_in).

要解决这个问题，我也在Junit的@Before中启动了另一个流程（flow_in），以存储输入状态和所传递的一切所需的事务。

To get around it, I initiated the other flow(flow_in) also in @Before of Junit, to store the transaction required for input state and everything passed.

在Corda的流测试API 中还有哪些其他方法可以使
直接存储输入事务/状态，而无需运行仅
的流来存储那些输入交易？

What are some other ways available in Corda's flow testing APIs to store input transaction/states directly without running the flows only to store those input transacations?

感谢您的帮助。

推荐答案

由于您有权访问节点的 ServiceHub s，因此可以直接在测试方法中构建，签名和存储事务od，而不是使用流：

Since you have access to the nodes' ServiceHubs, you can build, sign and store transactions directly in the test method, rather than using a flow:

class FlowTests {
    lateinit var network: MockNetwork
    lateinit var a: StartedMockNode
    lateinit var b: StartedMockNode

    @Before
    fun setup() {
        network = MockNetwork(listOf("com.example.contract"))
        a = network.createPartyNode()
        b = network.createPartyNode()
        listOf(a, b).forEach { it.registerInitiatedFlow(ExampleFlow.Acceptor::class.java) }
        network.runNetwork()
    }

    @After
    fun tearDown() {
        network.stopNodes()
    }

    @Test
    fun `a flow test`() {
        val lender = a.info.legalIdentities.first()
        val borrower = b.info.legalIdentities.first()

        val transactionBuilder = TransactionBuilder(network.defaultNotaryIdentity)
                .addOutputState(IOUState(99, lender, borrower), IOUContract.IOU_CONTRACT_ID)
                .addCommand(IOUContract.Commands.Create(), listOf(lender.owningKey, borrower.owningKey))

        a.transaction { transactionBuilder.verify(a.services) }
        val partSignedTransaction = a.services.signInitialTransaction(transactionBuilder)
        val signedTransaction = b.services.addSignature(partSignedTransaction)

        a.services.recordTransactions(signedTransaction)

        TODO("Test next flow.")
    }
}

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