lnd.xprv/queue/queue_test.go
2020-04-08 08:54:03 +02:00

88 lines
2.0 KiB
Go

package queue_test
import (
"testing"
"github.com/lightningnetwork/lnd/queue"
)
func testQueueAddDrain(t *testing.T, size, numStart, numStop, numAdd, numDrain int) {
t.Helper()
queue := queue.NewConcurrentQueue(size)
for i := 0; i < numStart; i++ {
queue.Start()
}
for i := 0; i < numStop; i++ {
defer queue.Stop()
}
// Pushes should never block for long.
for i := 0; i < numAdd; i++ {
queue.ChanIn() <- i
}
// Pops also should not block for long. Expect elements in FIFO order.
for i := 0; i < numDrain; i++ {
item := <-queue.ChanOut()
if i != item.(int) {
t.Fatalf("Dequeued wrong value: expected %d, got %d",
i, item.(int))
}
}
}
// TestConcurrentQueue tests that the queue properly adds 1000 items, drain all
// of them, and exit cleanly.
func TestConcurrentQueue(t *testing.T) {
t.Parallel()
testQueueAddDrain(t, 100, 1, 1, 1000, 1000)
}
// TestConcurrentQueueEarlyStop tests that the queue properly adds 1000 items,
// drain half of them, and still exit cleanly.
func TestConcurrentQueueEarlyStop(t *testing.T) {
t.Parallel()
testQueueAddDrain(t, 100, 1, 1, 1000, 500)
}
// TestConcurrentQueueIdempotentStart asserts that calling Start multiple times
// doesn't fail, and that the queue can still exit cleanly.
func TestConcurrentQueueIdempotentStart(t *testing.T) {
t.Parallel()
testQueueAddDrain(t, 100, 10, 1, 1000, 1000)
}
// TestConcurrentQueueIdempotentStop asserts that calling Stop multiple times
// doesn't fail, and that exiting doesn't block on subsequent Stops.
func TestConcurrentQueueIdempotentStop(t *testing.T) {
t.Parallel()
testQueueAddDrain(t, 100, 1, 10, 1000, 1000)
}
// TestQueueCloseIncoming tests that the queue properly handles an incoming
// channel that is closed.
func TestQueueCloseIncoming(t *testing.T) {
t.Parallel()
queue := queue.NewConcurrentQueue(10)
queue.Start()
queue.ChanIn() <- 1
close(queue.ChanIn())
item := <-queue.ChanOut()
if item.(int) != 1 {
t.Fatalf("unexpected item")
}
_, ok := <-queue.ChanOut()
if ok {
t.Fatalf("expected outgoing channel being closed")
}
}