Add utils.create_temp_file helper

src/clusterfuzz/_internal/base/utils.py

@@ -23,6 +23,7 @@
 import random
 import re
 import sys
+import tempfile
 import time
 import urllib.parse
 import urllib.request
@@ -1100,3 +1101,10 @@ def batched(iterator, batch_size):
 
   if batch:
     yield batch
+
+
+def create_temp_file(directory: str, prefix: str, suffix: str) -> str:
+  """Creates a temporary file and returns its path."""
+  fd, file_path = tempfile.mkstemp(dir=directory, prefix=prefix, suffix=suffix)
+  os.close(fd)
+  return file_path

src/clusterfuzz/_internal/tests/core/base/utils_test.py

@@ -720,3 +720,16 @@ def test_additional_prefix(self):
     """Test parsing manifest data with an added prefix."""
     file_data = 'prefix123-20250402153042-utc-40773ac0-username_test123-cad6977-prod'
     self.assertIsNone(utils.parse_manifest_data(file_data))
+
+
+class CreateTempFileTest(unittest.TestCase):
+  """Tests for create_temp_file."""
+
+  def test_create_temp_file(self):
+    """Test create_temp_file creates a file and returns its path."""
+    with tempfile.TemporaryDirectory() as tmpdir:
+      file_path = utils.create_temp_file(tmpdir, 'prefix_', '_suffix')
+      self.assertTrue(os.path.exists(file_path))
+      self.assertTrue(file_path.startswith(tmpdir))
+      self.assertIn('prefix_', file_path)
+      self.assertTrue(file_path.endswith('_suffix'))