Added tests for the Amiibo live client and ISO transcoder.

Tests/AmiiboService/Helpers/Extensions/Date+UTC.swift

@@ -0,0 +1,44 @@
+// ===----------------------------------------------------------------------===
+//
+// 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 Foundation
+
+extension Date {
+
+    // MARK: Functions
+
+    /// Makes a date from UTC components.
+    static func utc(
+        _ year: Int,
+        _ month: Int,
+        _ day: Int,
+        _ hour: Int = 0,
+        _ minute: Int = 0,
+        _ second: Int = 0
+    ) -> Date {
+        var calendar = Calendar(identifier: .gregorian)
+
+        calendar.timeZone = .init(secondsFromGMT: 0)!
+
+        return calendar.date(from: .init(
+            year: year,
+            month: month,
+            day: day,
+            hour: hour,
+            minute: minute,
+            second: second
+        ))!
+    }
+
+}