Corda V1 unit Test code issue - corda

Question

Please any suggest, but I aslo git the core project. most of junit test that have compile errror and some of the can't be run ok. I used below code make Junit test in V14 version the code it's ok. but in CordaV1 version. pop up error as blew:
net.corda.core.transactions.MissingContractAttachments: Cannot find contract attachments for [com.legalcontract.contract.LegalContractCode]
at net.corda.core.transactions.TransactionBuilder.toWireTransactionWithContext$core_main(TransactionBuilder.kt:96) ~[corda-core-1.0.0.jar:?]
at net.corda.core.transactions.TransactionBuilder.toWireTransactionWithContext$core_main$default(TransactionBuilder.kt:87) ~[corda-core-1.0.0.jar:?]
at net.corda.core.transactions.TransactionBuilder.toWireTransaction(TransactionBuilder.kt:85) ~[corda-core-1.0.0.jar:?]
at net.corda.core.transactions.TransactionBuilder.toLedgerTransaction(TransactionBuilder.kt:107) ~[corda-core-1.0.0.jar:?]
at net.corda.core.transactions.TransactionBuilder.verify(TransactionBuilder.kt:113) ~[corda-core-1.0.0.jar:?]
at com.legalcontract.flow.LegalContractFlow$Initiator.call(LegalContractFlow.kt:247) ~[main/:?]
at com.legalcontract.flow.LegalContractFlow$Initiator.call(LegalContractFlow.kt:47) ~[main/:?]
at net.corda.node.services.statemachine.FlowStateMachineImpl.run(FlowStateMachineImpl.kt:112) [corda-node-1.0.0.jar:?]
at net.corda.node.services.statemachine.FlowStateMachineImpl.run(FlowStateMachineImpl.kt:40) [corda-node-1.0.0.jar:?]
at co.paralleluniverse.fibers.Fiber.run1(Fiber.java:1092) [quasar-core-0.7.9-jdk8.jar:0.7.9]
at co.paralleluniverse.fibers.Fiber.exec(Fiber.java:788) [quasar-core-0.7.9-jdk8.jar:0.7.9]
at co.paralleluniverse.fibers.RunnableFiberTask.doExec(RunnableFiberTask.java:100) [quasar-core-0.7.9-jdk8.jar:0.7.9]
at co.paralleluniverse.fibers.RunnableFiberTask.run(RunnableFiberTask.java:91) [quasar-core-0.7.9-jdk8.jar:0.7.9]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_131]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_131]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_131]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [?:1.8.0_131]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_131]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_131]
Code:
#After
fun tearDown() {
net.stopNodes()
}
#Before
fun setup() {
net = MockNetwork(false, true)
}
class WrapperStream(input: InputStream) : FilterInputStream(input)
#Test
fun `flow a new status valid Legal Contract`() {
val notaryNode = net.createNotaryNode()
val a = net.createPartyNode(notaryNode.network.myAddress, CordaX500Name("a","London","GB"))
val b = net.createPartyNode(notaryNode.network.myAddress, CordaX500Name("b","New York","US"))
a.internals.registerInitiatedFlow(LegalContractFlow.Acceptor::class.java)
b.internals.registerInitiatedFlow(LegalContractFlow.Acceptor::class.java)
val attachment = gInputStreamAndHash()
println(attachment)
val id = a.database.transaction {
a.attachments.importAttachment(attachment.inputStream)
}
assertEquals(attachment.sha256, id, "Attachment has correct SHA256 hash")
LegalContractFlowTests.attachList.add(id.toString())
var fileName: String = "test1"
var legalContract: LegalContract = LegalContract(a.info.legalIdentities.first().name.toString(),LegalContractFlowTests.attachList.get(0))
//
System.out.print(legalContract)
var state: LegalContractState = LegalContractState(
legalContract,
a.info.legalIdentities.first(),
b.info.legalIdentities.first())
val flow = LegalContractFlow.Initiator(state, b.info.chooseIdentity(), false)
val future = a.services.startFlow(flow).resultFuture
var signedTx = future.getOrThrow()
for (node in listOf(a, b)) {
assertEquals(signedTx, node.services.validatedTransactions.getTransaction(signedTx.id))
}
}

Answer 1

In Corda V1, you need to tell your tests which packages to scan when looking for contract attachments - see https://docs.corda.net/key-concepts-contract-constraints.html#testing.
This is a temporary piece of boilerplate only, and is expected to be removed in the future. It is also not required for actual nodes, only for mock nodes.