Sources/Core/Extensions/TimeZone+Zone.swift

@@ -4,7 +4,7 @@ public extension TimeZone {
     
     // MARK: Zones
 
-    /// Greenwich Mean Time or UTC+0
+    /// A time zone indicating it is Greenwich Mean Time or UTC+0
     static let gmt = TimeZone(secondsFromGMT: 0)
     
 }

Tests/Core/Cases/Extensions/TimeZone+ZoneTests.swift

@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the SwiftLibs open source project
+//
+// Copyright (c) 2023 Röck+Cöde VoF. and the SwiftLibs project authors
+// Licensed under the EUPL 1.2 or later.
+//
+// See LICENSE.txt for license information
+// See CONTRIBUTORS.txt for the list of SwiftLibs project authors
+//
+//===----------------------------------------------------------------------===//
+
+import Core
+import XCTest
+
+final class TimeZone_ZoneTests: XCTestCase {
+
+    // MARK: Properties
+    
+    private var timeZone: TimeZone!
+
+    // MARK: Tests
+    
+    func test_gmt() {
+        // GIVEN
+        // WHEN
+        timeZone = .gmt
+        
+        // THEN
+        XCTAssertEqual(timeZone.identifier, "GMT")
+        XCTAssertEqual(timeZone.secondsFromGMT(), 0)
+    }
+
+}