fix(test): use REDIS_ADDR environment variable in cron test mocks to match CI service hostname

cmd/cron/station_status_test.go

@@ -14,7 +14,16 @@ import (
 )
 
 func newMockMonitor(id string, tripCount int, scheduleFunc func(context.Context, string) (int, error)) *StationMonitor {
-	rc := redis.NewClient(&redis.Options{Addr: "localhost:6379"})
+	// Read Redis address from environment, default to localhost:6379
+	redisAddr := os.Getenv("REDIS_ADDR")
+	if redisAddr == "" {
+		redisAddr = "localhost:6379"
+	}
+	rc := redis.NewClient(&redis.Options{
+		Addr:     redisAddr,
+		Password: "",
+		DB:       0,
+	})
 	yc := yandex.NewClient("test-key")
 
 	monitor := &StationMonitor{
@@ -40,7 +49,16 @@ const testMonitorID = "test-station"
 // gets status "active" and zero-trip day count resets to 0.
 func TestProcessStation_WithTrips(t *testing.T) {
 	t.Helper()
-	rc := redis.NewClient(&redis.Options{Addr: "localhost:6379"})
+	// Read Redis address from environment, default to localhost:6379
+	redisAddr := os.Getenv("REDIS_ADDR")
+	if redisAddr == "" {
+		redisAddr = "localhost:6379"
+	}
+	rc := redis.NewClient(&redis.Options{
+		Addr:     redisAddr,
+		Password: "",
+		DB:       0,
+	})
 	defer rc.Close()
 
 	ctx := context.Background()
@@ -84,7 +102,16 @@ func TestProcessStation_WithTrips(t *testing.T) {
 // with 0 trips increments the zero-trip day count.
 func TestProcessStation_ZeroTrips_IncrementsCount(t *testing.T) {
 	t.Helper()
-	rc := redis.NewClient(&redis.Options{Addr: "localhost:6379"})
+	// Read Redis address from environment, default to localhost:6379
+	redisAddr := os.Getenv("REDIS_ADDR")
+	if redisAddr == "" {
+		redisAddr = "localhost:6379"
+	}
+	rc := redis.NewClient(&redis.Options{
+		Addr:     redisAddr,
+		Password: "",
+		DB:       0,
+	})
 	defer rc.Close()
 
 	ctx := context.Background()
@@ -128,7 +155,16 @@ func TestProcessStation_ZeroTrips_IncrementsCount(t *testing.T) {
 // with 3 consecutive days of zero trips gets status "closed".
 func TestProcessStation_ZeroTrips_3Days_Closes(t *testing.T) {
 	t.Helper()
-	rc := redis.NewClient(&redis.Options{Addr: "localhost:6379"})
+	// Read Redis address from environment, default to localhost:6379
+	redisAddr := os.Getenv("REDIS_ADDR")
+	if redisAddr == "" {
+		redisAddr = "localhost:6379"
+	}
+	rc := redis.NewClient(&redis.Options{
+		Addr:     redisAddr,
+		Password: "",
+		DB:       0,
+	})
 	defer rc.Close()
 
 	ctx := context.Background()
@@ -190,7 +226,16 @@ func TestProcessStation_ZeroTrips_3Days_Closes(t *testing.T) {
 // closed due to 3 zero-trip days gets reactivated when trips resume.
 func TestProcessStation_Reactivation_AfterClosure(t *testing.T) {
 	t.Helper()
-	rc := redis.NewClient(&redis.Options{Addr: "localhost:6379"})
+	// Read Redis address from environment, default to localhost:6379
+	redisAddr := os.Getenv("REDIS_ADDR")
+	if redisAddr == "" {
+		redisAddr = "localhost:6379"
+	}
+	rc := redis.NewClient(&redis.Options{
+		Addr:     redisAddr,
+		Password: "",
+		DB:       0,
+	})
 	defer rc.Close()
 
 	ctx := context.Background()
@@ -240,7 +285,16 @@ func TestProcessStation_Reactivation_AfterClosure(t *testing.T) {
 // and that it reactivates when trips resume.
 func TestAutoClosureChronology(t *testing.T) {
 	t.Helper()
-	rc := redis.NewClient(&redis.Options{Addr: "localhost:6379"})
+	// Read Redis address from environment, default to localhost:6379
+	redisAddr := os.Getenv("REDIS_ADDR")
+	if redisAddr == "" {
+		redisAddr = "localhost:6379"
+	}
+	rc := redis.NewClient(&redis.Options{
+		Addr:     redisAddr,
+		Password: "",
+		DB:       0,
+	})
 	defer rc.Close()
 
 	ctx := context.Background()