Add initial test cases

App/App.xcodeproj/project.pbxproj

@@ -44,6 +44,7 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
+		2435021A2BA49F29000083BB /* App.xctestplan */ = {isa = PBXFileReference; lastKnownFileType = text; path = App.xctestplan; sourceTree = "<group>"; };
 		D563615B2B931FF800E4F789 /* App.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = App.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		D563615E2B931FF800E4F789 /* App.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = App.swift; sourceTree = "<group>"; };
 		D56361642B931FF900E4F789 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
@@ -106,6 +107,7 @@
 				D56361662B931FF900E4F789 /* App.entitlements */,
 				D563616A2B931FF900E4F789 /* Info.plist */,
 				D583D7C12B9AD2ED00B94F73 /* PrivacyInfo.xcprivacy */,
+				2435021A2BA49F29000083BB /* App.xctestplan */,
 				D56361672B931FF900E4F789 /* Preview Content */,
 			);
 			path = App;

App/App.xcodeproj/xcshareddata/xcschemes/App.xcscheme

@@ -27,8 +27,13 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      shouldAutocreateTestPlan = "YES">
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <TestPlans>
+         <TestPlanReference
+            reference = "container:App/App.xctestplan"
+            default = "YES">
+         </TestPlanReference>
+      </TestPlans>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"

App/App/App.xctestplan

@@ -0,0 +1,29 @@
+{
+  "configurations" : [
+    {
+      "id" : "235E58B3-6724-418C-907A-6211C4CC541B",
+      "name" : "Test Scheme Action",
+      "options" : {
+
+      }
+    }
+  ],
+  "defaultOptions" : {
+    "codeCoverage" : false,
+    "targetForVariableExpansion" : {
+      "containerPath" : "container:App.xcodeproj",
+      "identifier" : "D563615A2B931FF800E4F789",
+      "name" : "App"
+    }
+  },
+  "testTargets" : [
+    {
+      "target" : {
+        "containerPath" : "container:..\/MyLibrary",
+        "identifier" : "ScheduleFeatureTests",
+        "name" : "ScheduleFeatureTests"
+      }
+    }
+  ],
+  "version" : 1
+}

MyLibrary/Package.swift

@@ -68,5 +68,12 @@ let package = Package(
         .plugin(name: "LicenseProviderPlugin", package: "LicenseProvider")
       ]
     ),
+    .testTarget(
+      name: "ScheduleFeatureTests",
+      dependencies: [
+        "ScheduleFeature",
+        .product(name: "ComposableArchitecture", package: "swift-composable-architecture"),
+      ]
+    ),
   ]
 )

MyLibrary/Sources/ScheduleFeature/Schedule.swift

@@ -16,6 +16,12 @@ public struct Schedule {
     var id: Self { self }
   }
 
+  public struct SchedulesResponse: Equatable {
+    var day1: Conference
+    var day2: Conference
+    var workshop: Conference
+  }
+
   @ObservableState
   public struct State: Equatable {
 
@@ -29,7 +35,7 @@ public struct Schedule {
     @Presents var destination: Destination.State?
 
     public init() {
-      try! Tips.configure([.displayFrequency(.immediate)])
+      try? Tips.configure([.displayFrequency(.immediate)])
     }
   }
 
@@ -38,6 +44,7 @@ public struct Schedule {
     case path(StackAction<Path.State, Path.Action>)
     case destination(PresentationAction<Destination.Action>)
     case view(View)
+    case fetchResponse(Result<SchedulesResponse, Error>)
 
     public enum View {
       case onAppear
@@ -66,10 +73,12 @@ public struct Schedule {
     Reduce { state, action in
       switch action {
       case .view(.onAppear):
-        state.day1 = try! dataClient.fetchDay1()
-        state.day2 = try! dataClient.fetchDay2()
-        state.workshop = try! dataClient.fetchWorkshop()
-        return .none
+        return .send(.fetchResponse(Result {
+          let day1 = try dataClient.fetchDay1()
+          let day2 = try dataClient.fetchDay2()
+          let workshop = try dataClient.fetchWorkshop()
+          return .init(day1: day1, day2: day2, workshop: workshop)
+        }))
       case let .view(.disclosureTapped(session)):
         guard let description = session.description, let speakers = session.speakers else {
           return .none
@@ -93,6 +102,17 @@ public struct Schedule {
         #elseif os(visionOS)
           return .run { _ in await openURL(url) }
         #endif
+      case let .fetchResponse(.success(response)):
+        state.day1 = response.day1
+        state.day2 = response.day2
+        state.workshop = response.workshop
+        return .none
+      case let .fetchResponse(.failure(error as DecodingError)):
+         assertionFailure(error.localizedDescription)
+         return .none
+      case let .fetchResponse(.failure(error)):
+        print(error) // TODO: replace to Logger API
+        return .none
       case .binding, .path, .destination:
         return .none
       }

MyLibrary/Tests/ScheduleFeatureTests/Mocks.swift

@@ -0,0 +1,97 @@
+import Foundation
+import SharedModels
+
+extension Conference {
+  static let mock1 = Self(
+    id: 1,
+    title: "conference1",
+    date: Date(timeIntervalSince1970: 1_000),
+    schedules: [
+      .init(
+        time: Date(timeIntervalSince1970: 10_000),
+        sessions: [
+          .mock1,
+          .mock2,
+        ]
+      )
+    ]
+  )
+
+  static let mock2 = Self(
+    id: 2,
+    title: "conference2",
+    date: Date(timeIntervalSince1970: 2_000),
+    schedules: [
+      .init(
+        time: Date(timeIntervalSince1970: 20_000),
+        sessions: [
+          .mock1,
+          .mock2
+        ]
+      )
+    ]
+  )
+
+  static let mock3 = Self(
+    id: 3,
+    title: "conference3",
+    date: Date(timeIntervalSince1970: 3_000),
+    schedules: [
+      .init(
+        time: Date(timeIntervalSince1970: 30_000),
+        sessions: [
+          .mock1,
+          .mock2
+        ]
+      )
+    ]
+  )
+}
+
+extension Session {
+  static let mock1 = Self(
+    title: "session1",
+    speakers: [
+      .mock1
+    ],
+    place: "place1",
+    description: "description1",
+    requirements: "requirements1"
+  )
+
+  static let mock2 = Self(
+    title: "session2",
+    speakers: [
+      .mock2
+    ],
+    place: "place2",
+    description: "description2",
+    requirements: "requirements2"
+  )
+}
+
+extension Speaker {
+  static let mock1 = Self(
+    name: "speaker1",
+    imageName: "image1",
+    bio: "bio1",
+    links: [
+      .init(
+        name: "sns1",
+        url: URL(string: "https://example.com/speaker1")!
+      )
+    ]
+  )
+
+  static let mock2 = Self(
+    name: "speaker2",
+    imageName: "image2",
+    bio: "bio2",
+    links: [
+      .init(
+        name: "sns2",
+        url: URL(string: "https://example.com/speaker2")!
+      )
+    ]
+  )
+}

MyLibrary/Tests/ScheduleFeatureTests/ScheduleTests.swift

@@ -0,0 +1,38 @@
+import ComposableArchitecture
+import DataClient
+import XCTest
+
+@testable import ScheduleFeature
+
+final class ScheduleTests: XCTestCase {
+  @MainActor
+  func testFetchData() async {
+    let store = TestStore(initialState: Schedule.State()) {
+      Schedule()
+    } withDependencies: {
+      $0[DataClient.self].fetchDay1 = { @Sendable in .mock1 }
+      $0[DataClient.self].fetchDay2 = { @Sendable in .mock2 }
+      $0[DataClient.self].fetchWorkshop = { @Sendable in .mock3 }
+    }
+    await store.send(.view(.onAppear))
+    await store.receive(\.fetchResponse.success) {
+      $0.day1 = .mock1
+      $0.day2 = .mock2
+      $0.workshop = .mock3
+    }
+  }
+
+  @MainActor
+  func testFetchDataFailure() async {
+    struct FetchError: Equatable, Error {}
+    let store = TestStore(initialState: Schedule.State()) {
+      Schedule()
+    } withDependencies: {
+      $0[DataClient.self].fetchDay1 = { @Sendable in throw FetchError() }
+      $0[DataClient.self].fetchDay2 = { @Sendable in .mock2 }
+      $0[DataClient.self].fetchWorkshop = { @Sendable in .mock3 }
+    }
+    await store.send(.view(.onAppear))
+    await store.receive(\.fetchResponse.failure)
+  }
+}