Stabilize unit and UI tests for SportsTime

SportsTimeTests/Services/SuggestedTripsGeneratorTests.swift

@@ -22,8 +22,8 @@ struct SuggestedTripTests {
             preferences: TripPreferences(
                 planningMode: .dateRange,
                 sports: [.mlb],
-                startDate: Date(),
-                endDate: Date().addingTimeInterval(86400 * 7),
+                startDate: TestClock.now,
+                endDate: TestClock.now.addingTimeInterval(86400 * 7),
                 leisureLevel: .moderate
             ),
             stops: [],
@@ -339,7 +339,7 @@ struct CrossCountryFeatureTripTests {
         idPrefix: String
     ) -> [Game] {
         var games: [Game] = []
-        let calendar = Calendar.current
+        let calendar = TestClock.calendar
 
         for (index, stadium) in stadiums.enumerated() {
             let gameDate = calendar.date(byAdding: .day, value: index * spacingDays, to: startDate) ?? startDate
@@ -373,7 +373,7 @@ struct CrossCountryFeatureTripTests {
             idPrefix: "e2w"
         )
 
-        let secondLegStart = Calendar.current.date(
+        let secondLegStart = TestClock.calendar.date(
             byAdding: .day,
             value: (sortedEastToWest.count * spacingDays) + 2,
             to: baseDate