From 0bec5fd0e3f42d53cb3e4e615b4cc84fa1112718 Mon Sep 17 00:00:00 2001
From: PHILO-HE <feilong.he@intel.com>
Date: Mon, 8 Apr 2024 14:02:24 +0800
Subject: [PATCH] Fix compile

---
 velox/functions/sparksql/tests/StringTest.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/velox/functions/sparksql/tests/StringTest.cpp b/velox/functions/sparksql/tests/StringTest.cpp
index 900abcab3d9e..6042bf9bdbfc 100644
--- a/velox/functions/sparksql/tests/StringTest.cpp
+++ b/velox/functions/sparksql/tests/StringTest.cpp
@@ -21,6 +21,17 @@
 namespace facebook::velox::functions::sparksql::test {
 namespace {
 
+std::string generateRandomString(size_t length) {
+  const std::string chars =
+      "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+
+  std::string randomString;
+  for (std::size_t i = 0; i < length; ++i) {
+    randomString += chars[folly::Random::rand32() % chars.size()];
+  }
+  return randomString;
+}
+
 class StringTest : public SparkFunctionBaseTest {
  protected:
   // This is a five codepoint sequence that renders as a single emoji.