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