| 1 | package calendartest |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "fmt" |
| 7 | "net" |
| 8 | "os" |
| 9 | "runtime" |
| 10 | "strings" |
| 11 | "testing" |
| 12 | "time" |
| 13 | |
| 14 | "amadan.net/oficina/calendar/internal/calendar/keymailtest" |
| 15 | ) |
| 16 | |
| 17 | // TestMain keeps Keymail classification inside the process: every POST |
| 18 | // /signin now classifies its address, and without this each one would |
| 19 | // ask the real network whether example.com runs Keymail. Every DNS |
| 20 | // query is answered NXDOMAIN; no fixture is registered here, so every |
| 21 | // address is plain email. |
| 22 | func TestMain(m *testing.M) { |
| 23 | restore, err := keymailtest.Install() |
| 24 | if err != nil { |
| 25 | fmt.Fprintln(os.Stderr, "keymailtest.Install:", err) |
| 26 | os.Exit(1) |
| 27 | } |
| 28 | code := m.Run() |
| 29 | // No test may leave a sign-in mail worker running: every app a test |
| 30 | // builds is closed in its cleanup. |
| 31 | if code == 0 { |
| 32 | deadline := time.Now().Add(5 * time.Second) |
| 33 | for mailWorkers() > 0 && time.Now().Before(deadline) { |
| 34 | time.Sleep(10 * time.Millisecond) |
| 35 | } |
| 36 | if n := mailWorkers(); n > 0 { |
| 37 | fmt.Fprintf(os.Stderr, "FAIL: %d sign-in mail queue goroutines still running after the tests\n", n) |
| 38 | code = 1 |
| 39 | } |
| 40 | } |
| 41 | restore() |
| 42 | os.Exit(code) |
| 43 | } |
| 44 | |
| 45 | // mailWorkers counts goroutines running a sign-in mail queue's worker |
| 46 | // or log pump (internal/calendar/signin_mail.go). |
| 47 | func mailWorkers() int { |
| 48 | buf := make([]byte, 1<<22) |
| 49 | stacks := string(buf[:runtime.Stack(buf, true)]) |
| 50 | return strings.Count(stacks, "(*mailQueue).run(") + strings.Count(stacks, "(*mailQueue).pump(") |
| 51 | } |
| 52 | |
| 53 | // TestKeymailDiscoveryStaysInProcess: every unforced POST /signin |
| 54 | // classifies its address (rastrillo/auth's Keymail discovery), so this |
| 55 | // package's tests must not ask the real network whether example.com runs |
| 56 | // Keymail. With keymailtest installed every query is answered NXDOMAIN |
| 57 | // in-process, so even example.com, which public DNS resolves, must not. |
| 58 | func TestKeymailDiscoveryStaysInProcess(t *testing.T) { |
| 59 | ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second) |
| 60 | defer cancel() |
| 61 | addrs, err := net.DefaultResolver.LookupHost(ctx, "example.com") |
| 62 | var dnsErr *net.DNSError |
| 63 | if !errors.As(err, &dnsErr) || !dnsErr.IsNotFound { |
| 64 | t.Fatalf("LookupHost(example.com) = %v, %v; want NXDOMAIN from keymailtest's in-process resolver", addrs, err) |
| 65 | } |
| 66 | } |
| 67 | |
amadan