Function has_unexpected_errors

deps/v8/tools/gcmole/gcmole.py:525–580

Returns True if error state isn't as expected, False otherwise. In test-run mode, we expect certain errors and return False if expectations are met.

(options, errors_found, file_io)

      clean_block, output)

def has_unexpected_errors(options, errors_found, file_io):
  """Returns True if error state isn't as expected, False otherwise.

  In test-run mode, we expect certain errors and return False if expectations
  are met.
  """
  if not options.test_run:
    return errors_found

  log("Test Run")
  output = clean_test_output(file_io.getvalue())
  if not errors_found:
    log("Test file should produce errors, but none were found. Output:")
    print(output)
    return True

  new_file = options.out_dir / "test-expectations-gen.txt"
  with open(new_file, "w") as f:
    f.write(output)
  log("Wrote test-results: {}", new_file)

  expected_file = options.v8_root_dir / "tools/gcmole/test-expectations.txt"
  with open(expected_file) as exp_file:
    expectations = exp_file.read()

  if output != expectations:
    diff_file = options.out_dir / "test_output.diff"
    print("#" * 79)
    log("Output mismatch from running tests.")
    log("Please run gcmole manually with --test-run --verbose.")
    log(f"Expected: {expected_file}")
    log(f"New:      {new_file}")
    log(f"*Diff:*   {diff_file}")
    print("#" * 79)
    for line in difflib.unified_diff(
        expectations.splitlines(),
        output.splitlines(),
        fromfile=str(new_file),
        tofile=str(diff_file),
        lineterm="",
    ):
      print(line)

    print("#" * 79)
    log("Full output")
    log(f"Expected: {expected_file}")
    log(f"Diff:     {diff_file}")
    log(f"*New*:    {new_file}")
    print("#" * 79)
    print(output)
    print("#" * 79)

    return True

  log("Tests ran successfully")
  return False