chainntnfs+queue: move ConcurrentQueue to own package 'queue'

queue/queue_test.go

@@ -0,0 +1,26 @@
+package queue_test
+
+import (
+	"testing"
+
+	"github.com/lightningnetwork/lnd/queue"
+)
+
+func TestConcurrentQueue(t *testing.T) {
+	queue := queue.NewConcurrentQueue(100)
+	queue.Start()
+	defer queue.Stop()
+
+	// Pushes should never block for long.
+	for i := 0; i < 1000; i++ {
+		queue.ChanIn() <- i
+	}
+
+	// Pops also should not block for long. Expect elements in FIFO order.
+	for i := 0; i < 1000; i++ {
+		item := <-queue.ChanOut()
+		if i != item.(int) {
+			t.Fatalf("Dequeued wrong value: expected %d, got %d", i, item.(int))
+		}
+	}
+}