Question

我正在为我的CorDapp写一份合同测试，但是我已经陷入困境，因为它没有表现出应有的效果。

这是合同代码（仅提供相关部分）

when (command.value ) {
        is LoanCommands.Issue -> requireThat {
            "No Inputs should be consumed when issuing a Loan" using ( tx.inputs.isEmpty())
            "Only a single output must be created when issugin a Loan" using (tx.outputs.size == 1)
            "Outputs must not be empty" using (tx.outputs.isNotEmpty())

然后这是我正在运行的测试

    @Test
fun issueTransactionMustHaveOneOutputOfTypeLoanContract() {

    ledger {
        transaction {
            command(loanState.issuer.owningKey) { LoanContract.LoanCommands.Issue() }
            timeWindow(ZonedDateTime.of(LocalDate.now(), time, zoneId).toInstant())

            this `fails with` "Outputs must not be empty"
        }
        transaction {
            command(loanState.issuer.owningKey) { LoanContract.LoanCommands.Issue() }
            timeWindow(ZonedDateTime.of(LocalDate.now(), time, zoneId).toInstant())
            output { loanState } // Two outputs fails.
            output { dummyState}
            this `fails with` "Only a single output must be created when issugin a Loan"
        }

        transaction {
            command(loanState.issuer.owningKey) { LoanContract.LoanCommands.Issue() }
            output { loanState } // One output passes.
            timeWindow(ZonedDateTime.of(LocalDate.now(), time, zoneId).toInstant())
            this.verifies()
        }
    }
}

请注意，第二个事务正确失败（当我删除第一个事务时），但第一个事务给我这个错误

2017-08-14 12:32:15,250 main WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream

java.lang.AssertionError: Expected exception but didn't get one

at net.corda.testing.Verifies$DefaultImpls.failsWith(LedgerDSLInterpreter.kt:62)
at net.corda.testing.TransactionDSLInterpreter$DefaultImpls.failsWith(TransactionDSLInterpreter.kt)
at net.corda.testing.TestTransactionDSLInterpreter.failsWith(TestDSL.kt:89)
at net.corda.testing.Verifies$DefaultImpls.fails with(LedgerDSLInterpreter.kt:76)
at net.corda.testing.TransactionDSLInterpreter$DefaultImpls.fails with(TransactionDSLInterpreter.kt)
at net.corda.testing.TestTransactionDSLInterpreter.fails with(TestDSL.kt:89)
at net.corda.testing.TransactionDSL.fails with(TransactionDSLInterpreter.kt)
at com.template.contractTests.LoanContractIssueTest$issueTransactionMustHaveOneOutputOfTypeLoanContract$1$1.invoke(LoanContractIssueTest.kt:123)
at com.template.contractTests.

为什么它不会引发异常？看起来tx.outputs.isNotEmpty()无效。

感谢任何帮助

Answer 1

好问题 - 从您的代码中我没有看到问题。但请注意，您的规则似乎重叠。您测试只有一个输出，然后测量有> 0输出。第二个测试可以被删除，它永远不会捕获第一个没有的东西。

Answer 2

问题是第一次测试中的事务不包含任何输入或输出。要使交易有效，必须由所有投入和产出的合同接受。由于您没有输入或输出，因此交易始终有效。

当您有两个输出时，这不是问题，因为在这种情况下由于存在两个输出而运行verify函数。

合同测试DSL错误行为/错误

2 个答案: