util/stdlib/strnlen_test.cc

// Copyright 2014 The Crashpad Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "util/stdlib/strnlen.h"

#include <string.h>

#include "gtest/gtest.h"

namespace crashpad {
namespace test {
namespace {

TEST(strnlen, strnlen) {
  static constexpr char kTestBuffer[] = "abc\0d";
  ASSERT_EQ(strlen(kTestBuffer), 3u);
  EXPECT_EQ(crashpad::strnlen(kTestBuffer, 0), 0u);
  EXPECT_EQ(crashpad::strnlen(kTestBuffer, 1), 1u);
  EXPECT_EQ(crashpad::strnlen(kTestBuffer, 2), 2u);
  EXPECT_EQ(crashpad::strnlen(kTestBuffer, 3), 3u);
  EXPECT_EQ(crashpad::strnlen(kTestBuffer, 4), 3u);
  EXPECT_EQ(crashpad::strnlen(kTestBuffer, 5), 3u);
  EXPECT_EQ(crashpad::strnlen(kTestBuffer, 6), 3u);

  static constexpr char kEmptyBuffer[] = "\0";
  ASSERT_EQ(strlen(kEmptyBuffer), 0u);
  EXPECT_EQ(crashpad::strnlen(kEmptyBuffer, 0), 0u);
  EXPECT_EQ(crashpad::strnlen(kEmptyBuffer, 1), 0u);
  EXPECT_EQ(crashpad::strnlen(kEmptyBuffer, 2), 0u);
}

}  // namespace
}  // namespace test
}  // namespace crashpad