text: //===----------------------------------------------------------------------===//
  //
  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  // See https://llvm.org/LICENSE.txt for license information.
  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  //
  //===----------------------------------------------------------------------===//
  
  // UNSUPPORTED: c++03
  
  // <filesystem>
  
  // bool is_block_file(file_status s) noexcept
  // bool is_block_file(path const& p);
  // bool is_block_file(path const& p, std::error_code& ec) noexcept;
  
  #include "filesystem_include.h"
  #include <type_traits>
  #include <cassert>
  
  #include "test_macros.h"
  #include "rapid-cxx-test.h"
  #include "filesystem_test_helper.h"
  
  using namespace fs;
  
  TEST_SUITE(is_block_file_test_suite)
  
  TEST_CASE(signature_test)
  {
      file_status s; ((void)s);
      const path p; ((void)p);
      std::error_code ec; ((void)ec);
      ASSERT_NOEXCEPT(is_block_file(s));
      ASSERT_NOEXCEPT(is_block_file(p, ec));
      ASSERT_NOT_NOEXCEPT(is_block_file(p));
  }
  
  TEST_CASE(is_block_file_status_test)
  {
      struct TestCase {
          file_type type;
          bool expect;
      };
      const TestCase testCases[] = {
          {file_type::none, false},
          {file_type::not_found, false},
          {file_type::regular, false},
          {file_type::directory, false},
          {file_type::symlink, false},
          {file_type::block, true},
          {file_type::character, false},
          {file_type::fifo, false},
          {file_type::socket, false},
          {file_type::unknown, false}
      };
      for (auto& TC : testCases) {
          file_status s(TC.type);
          TEST_CHECK(is_block_file(s) == TC.expect);
      }
  }
  
  TEST_CASE(test_exist_not_found)
  {
      static_test_env static_env;
      const path p = static_env.DNE;
      TEST_CHECK(is_block_file(p) == false);
  }
  
  TEST_CASE(test_is_block_file_fails)
  {
      scoped_test_env env;
  #ifdef _WIN32
      // Windows doesn't support setting perms::none to trigger failures
      // reading directories; test using a special inaccessible directory
      // instead.
      const path p = GetWindowsInaccessibleDir();
      if (p.empty())
          TEST_UNSUPPORTED();
  #else
      const path dir = env.create_dir("dir");
      const path p = env.create_file("dir/file", 42);
      permissions(dir, perms::none);
  #endif
  
      std::error_code ec;
      TEST_CHECK(is_block_file(p, ec) == false);
      TEST_CHECK(ec);
  
      TEST_CHECK_THROW(filesystem_error, is_block_file(p));
  }
  
  TEST_SUITE_END()
  