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Monorepo for Tangled forked from tangled.org/core
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2.2 kB · 103 lines
Go
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import ( "sync" "testing" "time"
"github.com/bluesky-social/indigo/atproto/syntax")
const ( alice = syntax.DID("did:plc:alice") eve = syntax.DID("did:plc:eve") dawn = syntax.DID("did:plc:dawn"))
func TestQueueDrainsAllJobs(t *testing.T) { t.Parallel()
q := NewQueue(10, 2) q.Start()
var mu sync.Mutex var ran []string done := make(chan struct{}, 5)
for _, name := range []string{"a", "b", "c", "d", "e"} { q.Enqueue(dawn, Job{Run: func() error { mu.Lock() ran = append(ran, name) mu.Unlock() done <- struct{}{} return nil }}) }
for range 5 { select { case <-done: case <-time.After(time.Second): t.Fatal("timed out waiting for jobs to finish") } }
q.Stop()
if len(ran) != 5 { t.Fatalf("expected 5 jobs, ran %d", len(ran)) }}
func TestQueueRejectsWhenFull(t *testing.T) { t.Parallel()
// no workers, so the queue never drains q := NewQueue(2, 0)
if !q.Enqueue(dawn, Job{Run: func() error { return nil }}) { t.Fatal("first Enqueue() returned false, want true") } if !q.Enqueue(dawn, Job{Run: func() error { return nil }}) { t.Fatal("second Enqueue() returned false, want true") } if q.Enqueue(dawn, Job{Run: func() error { return nil }}) { t.Fatal("third Enqueue() returned true on full queue, want false") }}
func TestQueuePrefersOwnerWithFewestRunning(t *testing.T) { t.Parallel()
// 2 workers. alice gets the first slot; while she's holding it, eve's // job should win the second slot over alice's own queued waiters. q := NewQueue(20, 2)
releaseAlice1 := make(chan struct{}) gotEve := make(chan struct{}, 1)
q.Enqueue(alice, Job{Run: func() error { <-releaseAlice1 return nil }}) // alice queues two more q.Enqueue(alice, Job{Run: func() error { return nil }}) q.Enqueue(alice, Job{Run: func() error { return nil }}) // eve queues one q.Enqueue(eve, Job{Run: func() error { gotEve <- struct{}{} return nil }})
q.Start()
// eve should run while alice's first is still held select { case <-gotEve: case <-time.After(time.Second): t.Fatal("eve's job did not run while alice was blocked") }
close(releaseAlice1) q.Stop()}