Fix tests

storage/remote/queue_manager_test.go

@@ -99,7 +99,7 @@ func TestSampleDelivery(t *testing.T) {
 
 	m := NewQueueManager(QueueManagerConfig{
 		Client:    c,
-		Shards: 1,
+		MaxShards: 1,
 	})
 
 	// These should be received by the client.
@@ -185,8 +185,10 @@ func (c *TestBlockingStorageClient) Name() string {
 }
 
 func (t *QueueManager) queueLen() int {
+	t.shardsMtx.Lock()
+	defer t.shardsMtx.Unlock()
 	queueLength := 0
-	for _, shard := range t.shards {
+	for _, shard := range t.shards.queues {
 		queueLength += len(shard)
 	}
 	return queueLength
@@ -197,7 +199,7 @@ func TestSpawnNotMoreThanMaxConcurrentSendsGoroutines(t *testing.T) {
 	// `MaxSamplesPerSend*Shards` samples should be consumed by the
 	// per-shard goroutines, and then another `MaxSamplesPerSend`
 	// should be left on the queue.
-	n := defaultMaxSamplesPerSend*defaultShards + defaultMaxSamplesPerSend
+	n := defaultMaxSamplesPerSend*1 + defaultMaxSamplesPerSend
 
 	samples := make(model.Samples, 0, n)
 	for i := 0; i < n; i++ {
@@ -214,6 +216,7 @@ func TestSpawnNotMoreThanMaxConcurrentSendsGoroutines(t *testing.T) {
 	m := NewQueueManager(QueueManagerConfig{
 		Client:        c,
 		QueueCapacity: n,
+		MaxShards:     1,
 	})
 
 	m.Start()
@@ -250,7 +253,7 @@ func TestSpawnNotMoreThanMaxConcurrentSendsGoroutines(t *testing.T) {
 	}
 
 	numCalls := c.NumCalls()
-	if numCalls != uint64(defaultShards) {
-		t.Errorf("Saw %d concurrent sends, expected %d", numCalls, defaultShards)
+	if numCalls != uint64(1) {
+		t.Errorf("Saw %d concurrent sends, expected 1", numCalls)
 	}
 }