old_contents: import re
  import os
  import sys
  
  try:
      import IDF
  except ImportError:
      # this is a test case write with tiny-test-fw.
      # to run test cases outside tiny-test-fw,
      # we need to set environment variable `TEST_FW_PATH`,
      # then get and insert `TEST_FW_PATH` to sys path before import FW module
      test_fw_path = os.getenv("TEST_FW_PATH")
      if test_fw_path and test_fw_path not in sys.path:
          sys.path.insert(0, test_fw_path)
      import IDF
  
  
  @IDF.idf_example_test(env_tag="Example_WIFI", ignore=True)
  def test_examples_protocol_https_x509_bundle(env, extra_data):
      """
      steps: |
        1. join AP
        2. connect to multiple URLs
        3. send http request
      """
      dut1 = env.get_dut("https_x509_bundle", "examples/protocols/https_x509_bundle")
      # check and log bin size
      binary_file = os.path.join(dut1.app.binary_path, "https_x509_bundle.bin")
      bin_size = os.path.getsize(binary_file)
      IDF.log_performance("https_x509_bundle_bin_size", "{}KB".format(bin_size // 1024))
      IDF.check_performance("https_x509_bundle_bin_size", bin_size // 1024)
      # start test
      dut1.start_app()
      num_URLS = dut1.expect(re.compile(r"Connecting to (\d+) URLs"), timeout=30)
      dut1.expect(re.compile(r"Connection established to ([\s\S]*)"), timeout=30)
      dut1.expect("Completed {} connections".format(num_URLS[0]), timeout=60)
  
  
  if __name__ == '__main__':
      test_examples_protocol_https_x509_bundle()
  
new_contents: import os
  import re
  import ttfw_idf
  
  
  @ttfw_idf.idf_example_test(env_tag="Example_WIFI", ignore=True)
  def test_examples_protocol_https_x509_bundle(env, extra_data):
      """
      steps: |
        1. join AP
        2. connect to multiple URLs
        3. send http request
      """
      dut1 = env.get_dut("https_x509_bundle", "examples/protocols/https_x509_bundle")
      # check and log bin size
      binary_file = os.path.join(dut1.app.binary_path, "https_x509_bundle.bin")
      bin_size = os.path.getsize(binary_file)
      ttfw_idf.log_performance("https_x509_bundle_bin_size", "{}KB".format(bin_size // 1024))
      ttfw_idf.check_performance("https_x509_bundle_bin_size", bin_size // 1024, dut1.TARGET)
      # start test
      dut1.start_app()
      num_URLS = dut1.expect(re.compile(r"Connecting to (\d+) URLs"), timeout=30)
      dut1.expect(re.compile(r"Connection established to ([\s\S]*)"), timeout=30)
      dut1.expect("Completed {} connections".format(num_URLS[0]), timeout=60)
  
  
  if __name__ == '__main__':
      test_examples_protocol_https_x509_bundle()
  
subject: fix import error for the https_x509_bundle example