| 1 | package taskcatalog |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "path/filepath" |
| 6 | "testing" |
| 7 | "time" |
| 8 | ) |
| 9 | |
| 10 | func TestSharedManagerCloseFencesOpenAndAllowsRestart(t *testing.T) { |
| 11 | manager := &sharedManager{} |
| 12 | started := make(chan struct{}) |
| 13 | release := make(chan struct{}) |
| 14 | databasePath := filepath.Join(t.TempDir(), "tasks.sqlite") |
| 15 | manager.open = func(ctx context.Context, path string) (*Catalog, error) { |
| 16 | close(started) |
| 17 | <-release |
| 18 | return Open(ctx, databasePath) |
| 19 | } |
| 20 | manager.start() |
| 21 | <-started |
| 22 | |
| 23 | closed := make(chan error, 1) |
| 24 | ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) |
| 25 | defer cancel() |
| 26 | go func() { closed <- manager.close(ctx) }() |
| 27 | select { |
| 28 | case err := <-closed: |
| 29 | t.Fatalf("close returned before in-flight open exited: %v", err) |
| 30 | default: |
| 31 | } |
| 32 | close(release) |
| 33 | if err := <-closed; err != nil { |
| 34 | t.Fatalf("close after open fence: %v", err) |
| 35 | } |
| 36 | manager.mu.RLock() |
| 37 | stale := manager.catalog |
| 38 | manager.mu.RUnlock() |
| 39 | if stale != nil { |
| 40 | t.Fatal("stale open published a task catalog after close") |
| 41 | } |
| 42 | |
| 43 | manager.mu.Lock() |
| 44 | manager.open = func(ctx context.Context, path string) (*Catalog, error) { |
| 45 | return Open(ctx, databasePath) |
| 46 | } |
| 47 | manager.mu.Unlock() |
| 48 | manager.start() |
| 49 | manager.mu.RLock() |
| 50 | reopened := manager.openDone |
| 51 | manager.mu.RUnlock() |
| 52 | if reopened == nil { |
| 53 | t.Fatal("manager did not start a new generation after close") |
| 54 | } |
| 55 | <-reopened |
| 56 | manager.mu.RLock() |
| 57 | restarted := manager.catalog |
| 58 | manager.mu.RUnlock() |
| 59 | if restarted == nil { |
| 60 | t.Fatal("manager did not publish the restarted task catalog") |
| 61 | } |
| 62 | if err := manager.close(ctx); err != nil { |
| 63 | t.Fatalf("close restarted task catalog: %v", err) |
| 64 | } |
| 65 | } |
| 66 |