Add ErrorFeature to example app

Example/ExampleApp/.swiftpm/xcode/xcshareddata/xcschemes/ErrorFeature.xcscheme

+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1340"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "ErrorFeature"
+               BuildableName = "ErrorFeature"
+               BlueprintName = "ErrorFeature"
+               ReferencedContainer = "container:">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      codeCoverageEnabled = "YES">
+      <Testables>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "ErrorFeatureTests"
+               BuildableName = "ErrorFeatureTests"
+               BlueprintName = "ErrorFeatureTests"
+               ReferencedContainer = "container:">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "ErrorFeature"
+            BuildableName = "ErrorFeature"
+            BlueprintName = "ErrorFeature"
+            ReferencedContainer = "container:">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

Example/ExampleApp/.swiftpm/xcode/xcshareddata/xcschemes/example-app.xcscheme

@@ -20,6 +20,20 @@
                ReferencedContainer = "container:">
             </BuildableReference>
          </BuildActionEntry>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "ErrorFeature"
+               BuildableName = "ErrorFeature"
+               BlueprintName = "ErrorFeature"
+               ReferencedContainer = "container:">
+            </BuildableReference>
+         </BuildActionEntry>
          <BuildActionEntry
             buildForTesting = "YES"
             buildForRunning = "YES"
@@ -67,6 +81,16 @@
                ReferencedContainer = "container:">
             </BuildableReference>
          </TestableReference>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "ErrorFeatureTests"
+               BuildableName = "ErrorFeatureTests"
+               BlueprintName = "ErrorFeatureTests"
+               ReferencedContainer = "container:">
+            </BuildableReference>
+         </TestableReference>
          <TestableReference
             skipped = "NO">
             <BuildableReference

Example/ExampleApp/Package.swift

@@ -24,6 +24,10 @@ let package = Package(
       name: "AppFeature",
       targets: ["AppFeature"]
     ),
+    .library(
+      name: "ErrorFeature",
+      targets: ["ErrorFeature"]
+    ),
     .library(
       name: "LandingFeature",
       targets: ["LandingFeature"]
@@ -80,6 +84,27 @@ let package = Package(
       ],
       swiftSettings: swiftSettings
     ),
+    .target(
+      name: "ErrorFeature",
+      dependencies: [
+        .product(
+          name: "ComposableArchitecture",
+          package: "swift-composable-architecture"
+        ),
+        .product(
+          name: "ElixxirDAppsSDK",
+          package: "elixxir-dapps-sdk-swift"
+        ),
+      ],
+      swiftSettings: swiftSettings
+    ),
+    .testTarget(
+      name: "ErrorFeatureTests",
+      dependencies: [
+        .target(name: "ErrorFeature"),
+      ],
+      swiftSettings: swiftSettings
+    ),
     .target(
       name: "LandingFeature",
       dependencies: [

Example/ExampleApp/Sources/ErrorFeature/ErrorFeature.swift

+import ComposableArchitecture
+import SwiftUI
+
+public struct ErrorState: Equatable {
+  public init() {}
+}
+
+public enum ErrorAction: Equatable {}
+
+public struct ErrorEnvironment {
+  public init() {}
+}
+
+public let errorReducer = Reducer<ErrorState, ErrorAction, ErrorEnvironment>.empty
+
+#if DEBUG
+extension ErrorEnvironment {
+  public static let failing = ErrorEnvironment()
+}
+#endif

Example/ExampleApp/Sources/ErrorFeature/ErrorView.swift

+import ComposableArchitecture
+import SwiftUI
+
+public struct ErrorView: View {
+  public init(store: Store<ErrorState, ErrorAction>) {
+    self.store = store
+  }
+
+  let store: Store<ErrorState, ErrorAction>
+
+  struct ViewState: Equatable {
+    init(state: ErrorState) {}
+  }
+
+  public var body: some View {
+    WithViewStore(store.scope(state: ViewState.init)) { viewStore in
+      Text("ErrorView")
+    }
+  }
+}
+
+#if DEBUG
+public struct ErrorView_Previews: PreviewProvider {
+  public static var previews: some View {
+    ErrorView(store: .init(
+      initialState: .init(),
+      reducer: .empty,
+      environment: ()
+    ))
+  }
+}
+#endif

Example/ExampleApp/Tests/ErrorFeatureTests/ErrorFeatureTests.swift

+import XCTest
+@testable import ErrorFeature
+
+final class ErrorFeatureTests: XCTestCase {
+  func testExample() {
+    XCTAssert(true)
+  }
+}