swift-composable-architecture-mirror/Examples/CaseStudies/UIKitCaseStudiesTests/UIKitCaseStudiesTests.swift

import ComposableArchitecture
import Testing

@testable import UIKitCaseStudies

@MainActor
@Test
func countDown() async {
  let store = TestStore(initialState: Counter.State()) {
    Counter()
  }

  await store.send(.incrementButtonTapped) {
    $0.count = 1
  }
  await store.send(.decrementButtonTapped) {
    $0.count = 0
  }
}

@MainActor
@Test
func countDownList() async {
  let firstState = Counter.State()
  let secondState = Counter.State()
  let thirdState = Counter.State()

  let store = TestStore(
    initialState: CounterList.State(
      counters: [firstState, secondState, thirdState]
    )
  ) {
    CounterList()
  }

  await store.send(\.counters[id: firstState.id].incrementButtonTapped) {
    $0.counters[id: firstState.id]?.count = 1
  }
  await store.send(\.counters[id: firstState.id].decrementButtonTapped) {
    $0.counters[id: firstState.id]?.count = 0
  }

  await store.send(\.counters[id: secondState.id].incrementButtonTapped) {
    $0.counters[id: secondState.id]?.count = 1
  }
  await store.send(\.counters[id: secondState.id].decrementButtonTapped) {
    $0.counters[id: secondState.id]?.count = 0
  }

  await store.send(\.counters[id: thirdState.id].incrementButtonTapped) {
    $0.counters[id: thirdState.id]?.count = 1
  }
  await store.send(\.counters[id: thirdState.id].decrementButtonTapped) {
    $0.counters[id: thirdState.id]?.count = 0
  }
}