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0086-swiftui-snapshot-testing/PrimeTime/ComposableArchitecture/ComposableArchitecture.h

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+//
+//  ComposableArchitecture.h
+//  ComposableArchitecture
+//
+//  Created by Stephen Celis on 9/8/19.
+//  Copyright © 2019 Point-Free. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+//! Project version number for ComposableArchitecture.
+FOUNDATION_EXPORT double ComposableArchitectureVersionNumber;
+
+//! Project version string for ComposableArchitecture.
+FOUNDATION_EXPORT const unsigned char ComposableArchitectureVersionString[];
+
+// In this header, you should import all the public headers of your framework using statements like #import <ComposableArchitecture/PublicHeader.h>
+
+

0086-swiftui-snapshot-testing/PrimeTime/ComposableArchitecture/ComposableArchitecture.swift

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+import Combine
+import SwiftUI
+
+public struct Effect<Output>: Publisher {
+  public typealias Failure = Never
+
+  let publisher: AnyPublisher<Output, Failure>
+
+  public func receive<S>(
+    subscriber: S
+  ) where S: Subscriber, Failure == S.Failure, Output == S.Input {
+    self.publisher.receive(subscriber: subscriber)
+  }
+}
+
+extension Effect {
+  public static func fireAndForget(work: @escaping () -> Void) -> Effect {
+    return Deferred { () -> Empty<Output, Never> in
+      work()
+      return Empty(completeImmediately: true)
+    }.eraseToEffect()
+  }
+
+  public static func sync(work: @escaping () -> Output) -> Effect {
+    return Deferred {
+      Just(work())
+    }.eraseToEffect()
+  }
+}
+
+extension Publisher where Failure == Never {
+  public func eraseToEffect() -> Effect<Output> {
+    return Effect(publisher: self.eraseToAnyPublisher())
+  }
+}
+
+public typealias Reducer<Value, Action> = (inout Value, Action) -> [Effect<Action>]
+
+public final class Store<Value, Action>: ObservableObject {
+  private let reducer: Reducer<Value, Action>
+  @Published public private(set) var value: Value
+  private var viewCancellable: Cancellable?
+  private var effectCancellables: Set<AnyCancellable> = []
+
+  public init(initialValue: Value, reducer: @escaping Reducer<Value, Action>) {
+    self.reducer = reducer
+    self.value = initialValue
+  }
+
+  public func send(_ action: Action) {
+    let effects = self.reducer(&self.value, action)
+    effects.forEach { effect in
+      var effectCancellable: AnyCancellable?
+      var didComplete = false
+      effectCancellable = effect.sink(
+        receiveCompletion: { [weak self] _ in
+          didComplete = true
+          guard let effectCancellable = effectCancellable else { return }
+          self?.effectCancellables.remove(effectCancellable)
+      },
+        receiveValue: self.send
+      )
+      if !didComplete, let effectCancellable = effectCancellable {
+        self.effectCancellables.insert(effectCancellable)
+      }
+    }
+  }
+
+  public func view<LocalValue, LocalAction>(
+    value toLocalValue: @escaping (Value) -> LocalValue,
+    action toGlobalAction: @escaping (LocalAction) -> Action
+  ) -> Store<LocalValue, LocalAction> {
+    let localStore = Store<LocalValue, LocalAction>(
+      initialValue: toLocalValue(self.value),
+      reducer: { localValue, localAction in
+        self.send(toGlobalAction(localAction))
+        localValue = toLocalValue(self.value)
+        return []
+    }
+    )
+    localStore.viewCancellable = self.$value.sink { [weak localStore] newValue in
+      localStore?.value = toLocalValue(newValue)
+    }
+    return localStore
+  }
+}
+
+public func combine<Value, Action>(
+  _ reducers: Reducer<Value, Action>...
+) -> Reducer<Value, Action> {
+  return { value, action in
+    let effects = reducers.flatMap { $0(&value, action) }
+    return effects
+  }
+}
+
+public func pullback<LocalValue, GlobalValue, LocalAction, GlobalAction>(
+  _ reducer: @escaping Reducer<LocalValue, LocalAction>,
+  value: WritableKeyPath<GlobalValue, LocalValue>,
+  action: WritableKeyPath<GlobalAction, LocalAction?>
+) -> Reducer<GlobalValue, GlobalAction> {
+  return { globalValue, globalAction in
+    guard let localAction = globalAction[keyPath: action] else { return [] }
+    let localEffects = reducer(&globalValue[keyPath: value], localAction)
+
+    return localEffects.map { localEffect in
+      localEffect.map { localAction -> GlobalAction in
+        var globalAction = globalAction
+        globalAction[keyPath: action] = localAction
+        return globalAction
+      }
+      .eraseToEffect()
+    }
+  }
+}
+
+public func logging<Value, Action>(
+  _ reducer: @escaping Reducer<Value, Action>
+) -> Reducer<Value, Action> {
+  return { value, action in
+    let effects = reducer(&value, action)
+    let newValue = value
+    return [.fireAndForget {
+      print("Action: \(action)")
+      print("Value:")
+      dump(newValue)
+      print("---")
+      }] + effects
+  }
+}
+
+extension Publisher {
+  func cancellable<Id: Hashable>(id: Id) -> AnyPublisher<Output, Failure> {
+    return Deferred { () -> PassthroughSubject<Output, Failure> in
+      cancellables[id]?.cancel()
+      let subject = PassthroughSubject<Output, Failure>()
+      cancellables[id] = self.subscribe(subject)
+      return subject
+    }
+    .eraseToAnyPublisher()
+  }
+}
+
+private var cancellables: [AnyHashable: AnyCancellable] = [:]

0086-swiftui-snapshot-testing/PrimeTime/ComposableArchitecture/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+</dict>
+</plist>

0086-swiftui-snapshot-testing/PrimeTime/ComposableArchitectureTests/ComposableArchitectureTests.swift

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+//
+//  ComposableArchitectureTests.swift
+//  ComposableArchitectureTests
+//
+//  Copyright © 2019 Point-Free. All rights reserved.
+//
+
+import XCTest
+@testable import ComposableArchitecture
+
+class ComposableArchitectureTests: XCTestCase {
+
+    override func setUp() {
+        // Put setup code here. This method is called before the invocation of each test method in the class.
+    }
+
+    override func tearDown() {
+        // Put teardown code here. This method is called after the invocation of each test method in the class.
+    }
+
+    func testExample() {
+        // This is an example of a functional test case.
+        // Use XCTAssert and related functions to verify your tests produce the correct results.
+    }
+
+    func testPerformanceExample() {
+        // This is an example of a performance test case.
+        self.measure {
+            // Put the code you want to measure the time of here.
+        }
+    }
+
+}

0086-swiftui-snapshot-testing/PrimeTime/ComposableArchitectureTests/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+</dict>
+</plist>

0086-swiftui-snapshot-testing/PrimeTime/Counter/Counter.h

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+//
+//  Counter.h
+//  Counter
+//
+//  Created by Stephen Celis on 9/8/19.
+//  Copyright © 2019 Point-Free. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+//! Project version number for Counter.
+FOUNDATION_EXPORT double CounterVersionNumber;
+
+//! Project version string for Counter.
+FOUNDATION_EXPORT const unsigned char CounterVersionString[];
+
+// In this header, you should import all the public headers of your framework using statements like #import <Counter/PublicHeader.h>
+
+