Does anyone know of a clean way of doing assertio...

# kotest

[matthew graf]

Does anyone know of a clean way of doing assertions on the Either type (Arrow)? The shouldBeRight() matcher helps quite a bit but I found myself needing to use map to check values within that object

val submittedPayment: Either<PaymentEventRepoError, Payment> = eventStore.getLatestPaymentForAccount(123)
          submittedPayment.map { it.amount }.shouldBeRight(50.00.toBigDecimal())
          submittedPayment.map { it.state }.shouldBeRight(PaymentState.PENDING)

Its not so bad but I’m wondering if anyone has a better pattern

[sam]

I think there's shouldBeRight { value -> .... }

[sam]

which seems like it would be better

[matthew graf]

Ah thanks!

responseList.shouldBeRight { it.size.shouldBe(1) }

Definitely feels more intuitive and reads a bit better

[sam]

once kotlin 1.4 is out we can use contracts

[sam]

val right = either.shouldBeRight()
right.name shouldBe "sam"