Update RDB.ScheduleUnique with task state

internal/rdb/rdb.go

@@ -379,7 +379,11 @@ local ok = redis.call("SET", KEYS[1], ARGV[1], "NX", "EX", ARGV[2])
 if not ok then
   return 0
 end
-redis.call("HSET", KEYS[2], "msg", ARGV[4], "timeout", ARGV[5], "deadline", ARGV[6])
+redis.call("HSET", KEYS[2],
+           "msg", ARGV[4],
+           "state", "scheduled",
+           "timeout", ARGV[5],
+           "deadline", ARGV[6])
 redis.call("ZADD", KEYS[3], ARGV[3], ARGV[1])
 return 1
 `)

internal/rdb/rdb_test.go

@@ -915,20 +915,57 @@ func TestScheduleUnique(t *testing.T) {
 			continue
 		}
 
-		gotScheduled := h.GetScheduledEntries(t, r.client, tc.msg.Queue)
-		if len(gotScheduled) != 1 {
-			t.Errorf("%s inserted %d items to %q, want 1 items inserted", desc, len(gotScheduled), base.ScheduledKey(tc.msg.Queue))
+		// Check Scheduled zset has task ID.
+		scheduledKey := base.ScheduledKey(tc.msg.Queue)
+		zs := r.client.ZRangeWithScores(scheduledKey, 0, -1).Val()
+		if n := len(zs); n != 1 {
+			t.Errorf("Redis ZSET %q contains %d elements, want 1",
+				scheduledKey, n)
 			continue
 		}
-		if int64(gotScheduled[0].Score) != tc.processAt.Unix() {
-			t.Errorf("%s inserted an item with score %d, want %d", desc, int64(gotScheduled[0].Score), tc.processAt.Unix())
+		if got := zs[0].Member.(string); got != tc.msg.ID.String() {
+			t.Errorf("Redis ZSET %q member: got %v, want %v",
+				scheduledKey, got, tc.msg.ID.String())
+			continue
+		}
+		if got := int64(zs[0].Score); got != tc.processAt.Unix() {
+			t.Errorf("Redis ZSET %q score: got %d, want %d",
+				scheduledKey, got, tc.processAt.Unix())
 			continue
 		}
 
+		// Check the values under the task key.
+		taskKey := base.TaskKey(tc.msg.Queue, tc.msg.ID.String())
+		encoded := r.client.HGet(taskKey, "msg").Val() // "msg" field
+		decoded := h.MustUnmarshal(t, encoded)
+		if diff := cmp.Diff(tc.msg, decoded); diff != "" {
+			t.Errorf("persisted message was %v, want %v; (-want, +got)\n%s",
+				decoded, tc.msg, diff)
+		}
+		state := r.client.HGet(taskKey, "state").Val() // "state" field
+		if want := "scheduled"; state != want {
+			t.Errorf("state field under task-key is set to %q, want %q",
+				state, want)
+		}
+		timeout := r.client.HGet(taskKey, "timeout").Val() // "timeout" field
+		if want := strconv.Itoa(int(tc.msg.Timeout)); timeout != want {
+			t.Errorf("timeout field under task-key is set to %v, want %v", timeout, want)
+		}
+		deadline := r.client.HGet(taskKey, "deadline").Val() // "deadline" field
+		if want := strconv.Itoa(int(tc.msg.Deadline)); deadline != want {
+			t.Errorf("deadline field under task-ke is set to %v, want %v", deadline, want)
+		}
+
+		// Check queue is in the AllQueues set.
+		if !r.client.SIsMember(base.AllQueues, tc.msg.Queue).Val() {
+			t.Errorf("%q is not a member of SET %q", tc.msg.Queue, base.AllQueues)
+		}
+
+		// Enqueue the second message, should fail.
 		got := r.ScheduleUnique(tc.msg, tc.processAt, tc.ttl)
 		if got != ErrDuplicateTask {
-			t.Errorf("Second task: %s = %v, want %v",
-				desc, got, ErrDuplicateTask)
+			t.Errorf("Second task: %s = %v, want %v", desc, got, ErrDuplicateTask)
+			continue
 		}
 
 		gotTTL := r.client.TTL(tc.msg.UniqueKey).Val()
@@ -936,10 +973,6 @@ func TestScheduleUnique(t *testing.T) {
 			t.Errorf("TTL %q = %v, want %v", tc.msg.UniqueKey, gotTTL, tc.ttl)
 			continue
 		}
-		if !r.client.SIsMember(base.AllQueues, tc.msg.Queue).Val() {
-			t.Errorf("%q is not a member of SET %q", tc.msg.Queue, base.AllQueues)
-			continue
-		}
 	}
 }