fix switchover schedule tests (#2995)

* fix switchover schedule tests

Previously the tests would fail depending on the local time zone and the
time of day the test was being run.

---------

Co-authored-by: Felix Kunde <[email protected]>
Co-authored-by: Mikkel Oscar Lyderik Larsen <[email protected]>

Author: 3 people

pkg/cluster/cluster.go

@@ -1767,9 +1767,13 @@ func (c *Cluster) GetStatus() *ClusterStatus {
 }
 
 func (c *Cluster) GetSwitchoverSchedule() string {
+	now := time.Now().UTC()
+	return c.getSwitchoverScheduleAtTime(now)
+}
+
+func (c *Cluster) getSwitchoverScheduleAtTime(now time.Time) string {
 	var possibleSwitchover, schedule time.Time
 
-	now := time.Now().UTC()
 	for _, window := range c.Spec.MaintenanceWindows {
 		// in the best case it is possible today
 		possibleSwitchover = time.Date(now.Year(), now.Month(), now.Day(), window.StartTime.Hour(), window.StartTime.Minute(), 0, 0, time.UTC)

pkg/cluster/cluster_test.go

@@ -2116,7 +2116,7 @@ func TestCompareVolumeMounts(t *testing.T) {
 }
 
 func TestGetSwitchoverSchedule(t *testing.T) {
-	now := time.Now()
+	now, _ := time.Parse(time.RFC3339, "2025-11-11T12:35:00Z")
 
 	futureTimeStart := now.Add(1 * time.Hour)
 	futureWindowTimeStart := futureTimeStart.Format("15:04")
@@ -2195,7 +2195,7 @@ func TestGetSwitchoverSchedule(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			cluster.Spec.MaintenanceWindows = tt.windows
-			schedule := cluster.GetSwitchoverSchedule()
+			schedule := cluster.getSwitchoverScheduleAtTime(now)
 			if schedule != tt.expected {
 				t.Errorf("Expected GetSwitchoverSchedule to return %s, returned: %s", tt.expected, schedule)
 			}