update test for expired-now

Author: iamgabrielma

Modules/Tests/YosemiteTests/PointOfSale/POSCouponTests.swift

@@ -31,10 +31,34 @@ struct POSCouponTests {
 
     @Test func test_isExpired_when_current_date_then_returns_true() {
         // Given
-        let now = Date()
+        let now = fixedDate(daysFromReference: 0)
         let coupon = POSCoupon(id: UUID(), code: "expired-now", dateExpires: now)
 
         // Then
         #expect(coupon.isExpired == true, "A coupon expiring at the current time should be considered expired")
     }
 }
+
+private extension POSCouponTests {
+    /// Returns a fixed date with optional day offset
+    /// - Parameter daysFromReference: Number of days to add/subtract from the reference date (0 = reference date)
+    /// - Returns: A fixed date
+    func fixedDate(daysFromReference: Int = 0) -> Date {
+        var components = DateComponents()
+        components.year = 2024
+        components.month = 6
+        components.day = 15
+        components.hour = 12
+        components.minute = 0
+        components.second = 0
+        components.timeZone = TimeZone(identifier: "UTC")
+
+        guard let baseDate = Calendar(identifier: .gregorian).date(from: components) else {
+            // Fallback to the same date (2024-06-15 12:00:00 UTC) if calendar creation fails
+            return Date(timeIntervalSince1970: 1718452800)
+        }
+        guard daysFromReference != 0 else { return baseDate }
+
+        return Calendar.current.date(byAdding: .day, value: daysFromReference, to: baseDate) ?? baseDate
+    }
+}