base/containers/enum_set_unittest.nc

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// This is a "No Compile Test" suite.
// https://dev.chromium.org/developers/testing/no-compile-tests

#include "base/containers/enum_set.h"

namespace base {
namespace {

#if defined(NCTEST_ALL_METHOD_DISALLOWED_ON_LARGE_SPARSE_ENUM) // [r"fatal error: constexpr variable 'set' must be initialized by a constant expression"]

size_t WontCompile() {
  enum class TestEnumSparse {
    TEST_1 = 1,
    TEST_MIN = 1,
    TEST_50 = 50,
    TEST_100 = 100,
    TEST_MAX = TEST_100,
  };
  using TestEnumSparseSet = EnumSet<TestEnumSparse, TestEnumSparse::TEST_MIN,
                                    TestEnumSparse::TEST_MAX>;

  // TestEnumSparseSet::All() does not compile as constexpr because there are
  // more than 64 possible values.
  constexpr auto set = TestEnumSparseSet::All();
  return set.Size();
}

#endif

}  // namespace
}  // namespace base