feat: change email, export my data, delete account (with data anonymization)

test/account_change_email_dispatcher_test.go

@@ -0,0 +1,84 @@
+package test
+
+import (
+	"RenewCMS/internal/infrastructure/mailer"
+	"bytes"
+	"log"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+)
+
+type dispatcherLogBuffer struct {
+	mu     sync.Mutex
+	buffer bytes.Buffer
+}
+
+func (b *dispatcherLogBuffer) Write(p []byte) (int, error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+	return b.buffer.Write(p)
+}
+
+func (b *dispatcherLogBuffer) String() string {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+	return b.buffer.String()
+}
+
+func TestAccountChangeEmailAsyncDispatcherRunsJobInBackground(t *testing.T) {
+	dispatcher := mailer.NewAsyncDispatcher()
+	release := make(chan struct{})
+	done := make(chan struct{})
+
+	dispatcher.Dispatch(func() {
+		<-release
+		close(done)
+	})
+	select {
+	case <-done:
+		t.Fatal("job completed before it was released, so Dispatch did not return independently")
+	default:
+	}
+	close(release)
+	select {
+	case <-done:
+	case <-time.After(2 * time.Second):
+		t.Fatal("dispatched job never ran")
+	}
+}
+
+func TestAccountChangeEmailAsyncDispatcherRecoversAndLogsPanic(t *testing.T) {
+	buffer := &dispatcherLogBuffer{}
+	previous := log.Writer()
+	log.SetOutput(buffer)
+	defer log.SetOutput(previous)
+	dispatcher := mailer.NewAsyncDispatcher()
+	finished := make(chan struct{})
+
+	dispatcher.Dispatch(func() {
+		defer close(finished)
+		panic("boom")
+	})
+	select {
+	case <-finished:
+	case <-time.After(2 * time.Second):
+		t.Fatal("panicking job never ran")
+	}
+	deadline := time.Now().Add(2 * time.Second)
+	for !strings.Contains(buffer.String(), "boom") && time.Now().Before(deadline) {
+		time.Sleep(5 * time.Millisecond)
+	}
+	if !strings.Contains(buffer.String(), "panic in a background mail job: boom") {
+		t.Fatalf("panic was not logged, got %q", buffer.String())
+	}
+
+	followUp := make(chan struct{})
+	dispatcher.Dispatch(func() { close(followUp) })
+	select {
+	case <-followUp:
+	case <-time.After(2 * time.Second):
+		t.Fatal("dispatcher unusable after a recovered panic")
+	}
+}