更新

mailgun/mailgun_internal_test.go

@@ -0,0 +1,28 @@
+package mailgun
+
+import (
+	"context"
+	"testing"
+
+	mailx "code.yun.ink/pkg/mailx"
+)
+
+var _ mailx.Sender = (*MailGun)(nil)
+
+func TestName(t *testing.T) {
+	if got := New(Config{}).Name(); got != "mailgun" {
+		t.Errorf("Name() = %q, want mailgun", got)
+	}
+}
+
+func TestSendWithoutSender(t *testing.T) {
+	// 缺少 Sender 时应立即报错，不调用 mailgun SDK
+	g := New(Config{})
+	err := g.Send(context.Background(), mailx.NewMessage().
+		To("a@b.com").
+		Subject("s").
+		Build())
+	if err == nil {
+		t.Fatal("Send without sender should error")
+	}
+}