更新

aws/aws_internal_test.go

@@ -0,0 +1,40 @@
+package aws
+
+import (
+	"context"
+	"testing"
+
+	mailx "code.yun.ink/pkg/mailx"
+)
+
+var _ mailx.Sender = (*Aws)(nil)
+
+func TestConfigDefaults(t *testing.T) {
+	a := New(Config{})
+	if a.cfg.Region != "ap-northeast-1" {
+		t.Errorf("default region = %q, want ap-northeast-1", a.cfg.Region)
+	}
+	// 显式指定 Region 时不应被覆盖
+	a = New(Config{Region: "us-east-1"})
+	if a.cfg.Region != "us-east-1" {
+		t.Errorf("explicit region overwritten: %q", a.cfg.Region)
+	}
+}
+
+func TestName(t *testing.T) {
+	if got := New(Config{}).Name(); got != "aws" {
+		t.Errorf("Name() = %q, want aws", got)
+	}
+}
+
+func TestSendWithoutSender(t *testing.T) {
+	// 缺少 Sender 时应立即报错，不创建 AWS 会话
+	a := New(Config{})
+	err := a.Send(context.Background(), mailx.NewMessage().
+		To("a@b.com").
+		Subject("s").
+		Build())
+	if err == nil {
+		t.Fatal("Send without sender should error")
+	}
+}