summercms/modules/postcard/smtp_test.go

package postcard

import (
	"context"
	"strings"
	"testing"
	"time"
)

func TestSMTPTLSPolicy(t *testing.T) {
	t.Parallel()

	for _, tls := range []string{"", "mandatory", "tls", "none", "notls", "starttls", "opportunistic"} {
		_, err := NewSMTPDriver(SMTPConfig{Host: "127.0.0.1", Port: 1025, TLS: tls, Timeout: time.Second})
		if err != nil {
			t.Fatalf("tls %q: %v", tls, err)
		}
	}

	_, err := NewSMTPDriver(SMTPConfig{Host: "127.0.0.1", TLS: "maybe"})
	if err == nil || !strings.Contains(err.Error(), "mail.smtp.tls") {
		t.Fatalf("unknown tls error = %v", err)
	}
	_, err = NewSMTPDriver(SMTPConfig{TLS: "none"})
	if err == nil || !strings.Contains(err.Error(), "mail.smtp.host") {
		t.Fatalf("empty host error = %v", err)
	}
	_, err = NewSMTPDriver(SMTPConfig{Host: "   ", TLS: "mandatory"})
	if err == nil || !strings.Contains(err.Error(), "mail.smtp.host") {
		t.Fatalf("blank host error = %v", err)
	}
}

func TestSMTPErrorsOmitCredentialsAndBodies(t *testing.T) {
	cat := smokeCatalog(t)
	d, err := NewSMTPDriver(SMTPConfig{
		Host:     "127.0.0.1",
		Port:     1,
		Username: "user",
		Password: "secretpass",
		TLS:      "none",
		Timeout:  80 * time.Millisecond,
	})
	if err != nil {
		t.Fatal(err)
	}
	mail := NewMailer(cat, d, Options{From: "from@example.test"})
	err = mail.Send(context.Background(), Message{
		Template: "golem15.hello::mail.hello",
		To:       []string{"ada@example.test"},
		Vars:     map[string]any{"Name": "Ada", "URL": "https://example.test"},
	})
	if err == nil {
		t.Fatal("expected smtp failure")
	}
	msg := err.Error()
	if !strings.Contains(msg, "smtp") {
		t.Fatalf("error %q should mention smtp", msg)
	}
	for _, leaked := range []string{"secretpass", "Witaj **Ada**.", "text body"} {
		if strings.Contains(msg, leaked) {
			t.Fatalf("smtp error leaked %q: %v", leaked, err)
		}
	}
}