conformance/test_environment_flags.cc

// Protocol Buffers - Google's data interchange format
// Copyright 2026 Google LLC.  All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd

// Defines the global --testee_binary, --testee_args, --failure_list,
// --enforcement_level, --maximum_edition, --fix and --fix_output_file flags.
// Being process-global ABSL_FLAGs with short, generic names, they must only be
// linked into binaries with a test_environment_main-style main (see
// test_environment_flags.h), never into conformance_test_runner, whose legacy
// command line parses flags of the same names itself.

#include "conformance/test_environment_flags.h"

#include <string>
#include <vector>

#include "google/protobuf/descriptor.pb.h"
#include "absl/flags/flag.h"
#include "absl/types/span.h"
#include "conformance/test_environment.h"
#include "conformance/testee.h"

ABSL_FLAG(std::string, testee_binary, "",
          "The testee program to run conformance tests against.");
ABSL_FLAG(std::vector<std::string>, testee_args, {},
          "Comma-separated arguments to pass to --testee_binary.  Positional "
          "arguments are appended to these.");
ABSL_FLAG(std::vector<std::string>, failure_list, {},
          "Comma-separated list of files containing the tests that are "
          "expected to fail, one test name per line.  Use '#' for comments.");
ABSL_FLAG(google::protobuf::conformance::TestPriority, enforcement_level,
          google::protobuf::conformance::kLowestPriority,
          "The lowest priority whose failures fail the run, as its number: 0 "
          "enforces only P0, 1 enforces P0 and P1.  The default enforces every "
          "priority.  Failures of tests of a lower priority are tolerated "
          "(counted, not failed) unless the test is in the failure list, which "
          "is checked whatever the level.");
ABSL_FLAG(google::protobuf::Edition, maximum_edition, google::protobuf::EDITION_PROTO3,
          "Only run conformance tests up to and including this edition, e.g. "
          "EDITION_2023.  Defaults to proto2 and proto3 only.");
ABSL_FLAG(bool, fix, false,
          "Rewrite the failure list at the end of the run to match the "
          "observed results.  See --fix_output_file.  Refused when only some "
          "of the tests run (--gtest_filter, sharding).  Use it via `bazel run "
          "<target> -- --fix`: under `bazel test` the file is written inside "
          "the test sandbox and discarded.");
ABSL_FLAG(std::string, fix_output_file, "",
          "Where --fix writes the updated failure list.  Required when more "
          "than one --failure_list is given; otherwise defaults to the "
          "failure list itself.  A relative path (this flag's or the failure "
          "list's) is resolved under $BUILD_WORKSPACE_DIRECTORY when that is "
          "set, so that `bazel run ... -- --fix` creates or updates the file "
          "in your workspace.");

namespace google {
namespace protobuf {
namespace conformance {
namespace internal {

ConformanceEnvironmentOptions OptionsFromFlags(
    absl::Span<char* const> positional_args) {
  ConformanceEnvironmentOptions options;
  options.testee_binary = absl::GetFlag(FLAGS_testee_binary);
  options.testee_args = absl::GetFlag(FLAGS_testee_args);
  for (const char* positional_arg : positional_args) {
    options.testee_args.push_back(positional_arg);
  }
  options.failure_list_files = absl::GetFlag(FLAGS_failure_list);
  options.enforcement_level = absl::GetFlag(FLAGS_enforcement_level);
  options.maximum_edition = absl::GetFlag(FLAGS_maximum_edition);
  options.fix = absl::GetFlag(FLAGS_fix);
  options.fix_output_file = absl::GetFlag(FLAGS_fix_output_file);
  return options;
}

}  // namespace internal
}  // namespace conformance
}  // namespace protobuf
}  // namespace google