idiomatic project structure

internal/email/queue_test.go

@@ -0,0 +1,29 @@
+package email
+
+import (
+	"fmt"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestEmailQueue(t *testing.T) {
+	queue := NewEmailQueue(100, 14, &TestEmailClient{})
+
+	// Start the queue processing
+	queue.Start()
+
+	// Enqueue some emails
+	for i := 1; i <= 28; i++ {
+		email := Email{
+			Sender:    "test@example.com",
+			Recipient: fmt.Sprintf("user%d@example.com", i),
+			Subject:   "test subject",
+			Content:   "This is a test email",
+		}
+		queue.AddEmail(email)
+	}
+	// CloseDb the queue after all emails are processed
+	queue.Stop()
+
+	assert.Equal(t, queue.FailedSendCount, 0)
+}