containAtLeastOneItemThat

Callable

• containAtLeastOneItemThat<Item>(expectation: Expectation<Item>): Expectation<Item[]>

---

• Produces an expectation that is met when the actual array of Item[] contains at least one Item for which the expectation is met.

  Ensuring that at least one item in an array meets the expectation

  import { actorCalled } from '@serenity-js/core'
  import { Ensure, containAtLeastOneItemThat, isGreaterThan } from '@serenity-js/assertions'
  
  const items = [ 10, 15, 20 ]
  
  await actorCalled('Ester').attemptsTo(
    Ensure.that(items, containAtLeastOneItemThat(isGreaterThan(18))),
  )

  ---

  Type parameters

  • Item

  Parameters

  • expectation: Expectation<Item>

  Returns Expectation<Item[]>