test: HeadObject query tests, more util code changes

tests/drivers/string.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+
+# Copyright 2026 Versity Software
+# This file is licensed under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http:#www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+source ./tests/logger.sh
+
+generate_random_string() {
+  if ! check_param_count_v2 "min size, max size" 2 $#; then
+    return 1
+  fi
+  local string="" range size response
+  range=$(($2 - $1 + 1))
+  size=$(($1 + RANDOM % range))
+
+  if ! response=$(get_file_name 2>&1); then
+    log 2 "error getting file name: $response"
+    return 1
+  fi
+  pipe_error_file="$response"
+
+  while [ "${#string}" -lt "$size" ]; do
+    chunk="$(
+      {
+        dd if=/dev/urandom bs=128 count=1 |
+          LC_ALL=C tr -d '\000' |
+          LC_ALL=C tr -dc 'A-Za-z0-9'
+      } 2>"$TEST_FILE_FOLDER/$pipe_error_file"
+    )"
+    status=$?
+
+    if [ $status -ne 0 ]; then
+      log 2 "error creating chunk: $(cat "$TEST_FILE_FOLDER/$pipe_error_file")"
+      return 1
+    fi
+
+    string="${string}${chunk}"
+  done
+
+  printf '%s\n' "${string:0:size}"
+  return 0
+}