Add test for store invalidation. (pointfreeco#3038)

Tests/ComposableArchitectureTests/StoreTests.swift

@@ -1055,6 +1055,65 @@
  Feature.State(count: 0, isOn: false, subjectCount: 1)
  )
  }
+
+ @Reducer
+ struct InvalidatedStoreScopeParentFeature: Reducer {
+ @ObservableState
+ struct State {
+ @Presents var child: InvalidatedStoreScopeChildFeature.State?
+ }
+ enum Action {
+ case child(PresentationAction<InvalidatedStoreScopeChildFeature.Action>)
+ case tap
+ }
+ var body: some ReducerOf<Self> {
+ EmptyReducer()
+ .ifLet(\.$child, action: \.child) {
+ InvalidatedStoreScopeChildFeature()
+ }
+ }
+ }
+ @Reducer
+ struct InvalidatedStoreScopeChildFeature: Reducer {
+ @ObservableState
+ struct State {
+ @Presents var grandchild: InvalidatedStoreScopeGrandchildFeature.State?
+ }
+ enum Action {
+ case grandchild(PresentationAction<InvalidatedStoreScopeGrandchildFeature.Action>)
+ }
+ var body: some ReducerOf<Self> {
+ EmptyReducer()
+ .ifLet(\.$grandchild, action: \.grandchild) {
+ InvalidatedStoreScopeGrandchildFeature()
+ }
+ }
+ }
+ @Reducer
+ struct InvalidatedStoreScopeGrandchildFeature: Reducer {
+ struct State {}
+ enum Action {}
+ var body: some ReducerOf<Self> { EmptyReducer() }
+ }
+ @MainActor
+ func testInvalidatedStoreScope() async throws {
+ @Perception.Bindable var store = Store(
+ initialState: InvalidatedStoreScopeParentFeature.State(
+ child: InvalidatedStoreScopeChildFeature.State(
+ grandchild: InvalidatedStoreScopeGrandchildFeature.State()
+ )
+ )
+ ) {
+ InvalidatedStoreScopeParentFeature()
+ }
+ store.send(.tap)
+
+ @Perception.Bindable var childStore = store.scope(state: \.child, action: \.child)!
+ let grandchildStoreBinding = $childStore.scope(state: \.grandchild, action: \.grandchild)
+
+ store.send(.child(.dismiss))
+ grandchildStoreBinding.wrappedValue = nil
+ }
  }
 
  private struct Count: TestDependencyKey {