Updated the folder structure in the Tests target.

Tests/AmiiboService/Helpers/Clients/AmiiboMockClient.swift

@@ -0,0 +1,245 @@
+// ===----------------------------------------------------------------------===
+// 
+// This source file is part of the Amiibo Service open source project
+// 
+// Copyright (c) 2026 Röck+Cöde VoF. and the Amiibo Service project authors
+// Licensed under Apache license v2.0
+// 
+// See LICENSE for license information
+// See CONTRIBUTORS for the list of Amiibo Service project authors
+//
+// SPDX-License-Identifier: Apache-2.0
+// 
+// ===----------------------------------------------------------------------===
+
+import AmiiboService
+import Foundation
+
+/// A type that implements a mock client, for testing purposes.
+struct AmiiboMockClient {
+    
+    // MARK: Properties
+    
+    /// A list of amiibo items to return, if any.
+    private let amiibos: [Amiibo]?
+    
+    /// A list of amiibo series to return, if any.
+    private let amiiboSeries: [AmiiboSeries]?
+    
+    /// A list of amiibo types to return, if any.
+    private let amiiboTypes: [AmiiboType]?
+    
+    /// An error to throw, if any.
+    private let error: AmiiboServiceError?
+    
+    /// A list of game characters to return, if any.
+    private let gameCharacters: [GameCharacter]?
+    
+    /// A list of game series to return, if any.
+    private let gameSeries: [GameSeries]?
+    
+    /// A last updated date to return, if any.
+    private let lastUpdated: Date?
+    
+    // MARK: Initializers
+    
+    /// Initializes this client.
+    /// - Parameters:
+    ///   - amiibos: A list of amiibo items to return, if any.
+    ///   - amiiboSeries: A list of amiibo series to return, if any.
+    ///   - amiiboTypes: A list of amiibo types to return, if any.
+    ///   - gameCharacters: A list of game characters to return, if any.
+    ///   - gameSeries: A list of game series to return, if any.
+    ///   - lastUpdated: A last updated date to return, if any.
+    ///   - error: An error to throw, if any. 
+    init(
+        amiibos: [Amiibo]? = nil,
+        amiiboSeries: [AmiiboSeries]? = nil,
+        amiiboTypes: [AmiiboType]? = nil,
+        gameCharacters: [GameCharacter]? = nil,
+        gameSeries: [GameSeries]? = nil,
+        lastUpdated: Date? = nil,
+        error: AmiiboServiceError? = nil
+    ) {
+        self.amiibos = amiibos
+        self.amiiboSeries = amiiboSeries
+        self.amiiboTypes = amiiboTypes
+        self.error = error
+        self.gameCharacters = gameCharacters
+        self.gameSeries = gameSeries
+        self.lastUpdated = lastUpdated
+    }
+    
+}
+
+// MARK: - AmiiboClient
+
+extension AmiiboMockClient: AmiiboClient {
+    
+    // MARK: Functions
+
+#if swift(>=6.0)
+    func getAmiibos(
+        by filter: AmiiboFilter
+    ) async throws(AmiiboServiceError) -> [Amiibo] {
+        try fetchAmiibosIfAny()
+    }
+
+    func getAmiiboSeries(
+        by filter: AmiiboSeriesFilter
+    ) async throws(AmiiboServiceError) -> [AmiiboSeries] {
+        try fetchAmiiboSeriesIfAny()
+    }
+
+    func getAmiiboTypes(
+        by filter: AmiiboTypeFilter
+    ) async throws(AmiiboServiceError) -> [AmiiboType] {
+        try fetchAmiiboTypesIfAny()
+    }
+
+    func getGameCharacters(
+        by filter: GameCharacterFilter
+    ) async throws(AmiiboServiceError) -> [GameCharacter] {
+        try fetchGameCharactersIfAny()
+    }
+
+    func getGameSeries(
+        by filter: GameSeriesFilter
+    ) async throws(AmiiboServiceError) -> [GameSeries] {
+        try fetchGameSeriesIfAny()
+    }
+
+    func getLastUpdated() async throws(AmiiboServiceError) -> Date {
+        fetchLastUpdatedIfAny()
+    }
+#else
+    func getAmiibos(
+        by filter: AmiiboFilter
+    ) async throws -> [Amiibo] {
+        try fetchAmiibosIfAny()
+    }
+    
+    func getAmiiboSeries(
+        by filter: AmiiboSeriesFilter
+    ) async throws -> [AmiiboSeries] {
+        try fetchAmiiboSeriesIfAny()
+    }
+    
+    func getAmiiboTypes(
+        by filter: AmiiboTypeFilter
+    ) async throws -> [AmiiboType] {
+        try fetchAmiiboTypesIfAny()
+    }
+    
+    func getGameCharacters(
+        by filter: GameCharacterFilter
+    ) async throws -> [GameCharacter] {
+        try fetchGameCharactersIfAny()
+    }
+    
+    func getGameSeries(
+        by filter: GameSeriesFilter
+    ) async throws -> [GameSeries] {
+        try fetchGameSeriesIfAny()
+    }
+
+    func getLastUpdated() async throws -> Date {
+        try fetchLastUpdatedIfAny()
+    }
+#endif
+    
+}
+
+// MARK: - Helpers
+
+private extension AmiiboMockClient {
+    
+    // MARK: Functions
+    
+    /// Fetches a list of amiibo items, if any.
+    /// - Returns: A list of amiibo items.
+    /// - Throws: An ``AmiiboServiceError`` error in case an error has been provided.
+    func fetchAmiibosIfAny() throws -> [Amiibo] {
+        try throwErrorIfExists()
+        
+        guard let amiibos else {
+            throw AmiiboServiceError.notFound
+        }
+        
+        return amiibos
+    }
+    
+    /// Fetches a list of amiibo series, if any.
+    /// - Returns: A list of amiibo series.
+    /// - Throws: An ``AmiiboServiceError`` error in case an error has been provided.
+    func fetchAmiiboSeriesIfAny() throws -> [AmiiboSeries] {
+        try throwErrorIfExists()
+        
+        guard let amiiboSeries else {
+            throw AmiiboServiceError.notFound
+        }
+        
+        return amiiboSeries
+    }
+    
+    /// Fetches a list of amiibo types, if any.
+    /// - Returns: A list of amiibo types.
+    /// - Throws: An ``AmiiboServiceError`` error in case an error has been provided.
+    func fetchAmiiboTypesIfAny() throws -> [AmiiboType] {
+        try throwErrorIfExists()
+        
+        guard let amiiboTypes else {
+            throw AmiiboServiceError.notFound
+        }
+        
+        return amiiboTypes
+    }
+    
+    /// Fetches a list of game characters, if any.
+    /// - Returns: A list of game characters.
+    /// - Throws: An ``AmiiboServiceError`` error in case an error has been provided.
+    func fetchGameCharactersIfAny() throws -> [GameCharacter] {
+        try throwErrorIfExists()
+        
+        guard let gameCharacters else {
+            throw AmiiboServiceError.notFound
+        }
+        
+        return gameCharacters
+    }
+    
+    /// Fetches a list of game series, if any.
+    /// - Returns: A list of game series, if any.
+    /// - Throws: An ``AmiiboServiceError`` error in case an error has been provided.
+    func fetchGameSeriesIfAny() throws -> [GameSeries] {
+        try throwErrorIfExists()
+        
+        guard let gameSeries else {
+            throw AmiiboServiceError.notFound
+        }
+        
+        return gameSeries
+    }
+    
+    /// Fetches a last updated date, if any.
+    /// - Returns: A last updated date.
+    /// - Throws: An ``AmiiboServiceError`` error in case an error has been provided.
+    func fetchLastUpdatedIfAny() throws -> Date {
+        try throwErrorIfExists()
+        
+        guard let lastUpdated else {
+            throw AmiiboServiceError.notFound
+        }
+        
+        return lastUpdated
+    }
+    
+    /// Throws an error if it has been provided,
+    /// - Throws: An ``AmiiboServiceError`` error in case an error has been provided.
+    func throwErrorIfExists() throws(AmiiboServiceError) {
+        if let error {
+            throw error
+        }
+    }
+    
+}