修复短信登录限流处理

backend/internal/integrations/sms/provider_test.go

@@ -0,0 +1,29 @@
+package sms
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestIsProviderRateLimited(t *testing.T) {
+	err := &ProviderError{
+		Code:    "isv.BUSINESS_LIMIT_CONTROL",
+		Message: "触发小时级流控Permits:5",
+		Err:     ErrProviderRateLimited,
+	}
+
+	if !IsProviderRateLimited(err) {
+		t.Fatalf("expected provider rate limit error")
+	}
+	if !errors.Is(err, ErrProviderRateLimited) {
+		t.Fatalf("expected errors.Is to match provider rate limit")
+	}
+}
+
+func TestProviderErrorMessage(t *testing.T) {
+	err := &ProviderError{Code: "isv.INVALID_PARAMETERS", Message: "参数错误"}
+
+	if got := err.Error(); got != "sms provider rejected: isv.INVALID_PARAMETERS: 参数错误" {
+		t.Fatalf("unexpected error message: %s", got)
+	}
+}