fix: 完成商务迁移复核与接口优化并清理历史资料

internal/service/payment/payment_test.go

@@ -0,0 +1,28 @@
+package payment
+
+import (
+	"context"
+	"errors"
+	paymentbiz "kra/internal/biz/payment"
+	"testing"
+)
+
+type diagnosticRepo struct{ paymentbiz.PaymentRepo }
+
+func (diagnosticRepo) TestProvider(context.Context, string) (*paymentbiz.PaymentTestResult, error) {
+	return &paymentbiz.PaymentTestResult{Provider: "alipay", Stages: []paymentbiz.PaymentTestStage{
+		{Name: "config", Status: "passed", Message: "配置已检查"},
+		{Name: "create", Status: "failed", Message: "https://merchant:secret@example.test/private?token=secret"},
+	}}, errors.New("provider response contains a secret")
+}
+
+func TestProviderDiagnosticsDoNotExposeRawErrors(t *testing.T) {
+	s := NewPaymentService(paymentbiz.NewPaymentUsecase(diagnosticRepo{}, nil, nil, nil, nil, nil))
+	result, err := s.TestProvider(context.Background(), "alipay")
+	if err != paymentbiz.ErrPaymentTestFailed {
+		t.Fatalf("unsafe diagnostic error: %v", err)
+	}
+	if result == nil || len(result.Stages) != 2 || result.Stages[0].Message != "配置已检查" || result.Stages[1].Message != "该步骤失败，请检查配置和服务端日志" {
+		t.Fatalf("unexpected diagnostic response: %+v", result)
+	}
+}