优化结构

internal/integration/email/email_test.go

@@ -0,0 +1,24 @@
+package email
+
+import (
+	"context"
+	"testing"
+
+	"kra/internal/conf"
+)
+
+func TestDefaultRecipientsIgnoreEmptyConfiguration(t *testing.T) {
+	runtime := conf.NewRuntime(&conf.Data{}, &conf.AdminBackend{Email: &conf.AdminBackend_Email{To: "  "}})
+	repo := &emailRepo{runtime: runtime}
+	if got := repo.DefaultRecipients(); len(got) != 0 {
+		t.Fatalf("DefaultRecipients() = %#v, want empty", got)
+	}
+}
+
+func TestSendRejectsEmptyRecipientsBeforeNetworkDial(t *testing.T) {
+	runtime := conf.NewRuntime(&conf.Data{}, &conf.AdminBackend{Email: &conf.AdminBackend_Email{Host: "smtp.example.com", From: "from@example.com", Secret: "secret", Port: 25}})
+	repo := &emailRepo{runtime: runtime}
+	if err := repo.Send(context.Background(), []string{"  ", ""}, "subject", "body"); err == nil {
+		t.Fatal("Send() accepted empty recipients")
+	}
+}