llvm/unittests/ADT/IListNodeTest.cpp

   1 //===- unittests/ADT/IListNodeTest.cpp - ilist_node unit tests ------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "llvm/ADT/ilist_node.h"
  10 #include "gtest/gtest.h"
  11 #include <type_traits>
  12
  13 using namespace llvm;
  14 using namespace llvm::ilist_detail;
  15
  16 namespace {
  17
  18 struct Node;
  19
  20 struct TagA {};
  21 struct TagB {};
  22
  23 TEST(IListNodeTest, Options) {
  24   static_assert(
  25       std::is_same_v<compute_node_options<Node>::type,
  26                      compute_node_options<Node, ilist_tag<void>>::type>,
  27       "default tag is void");
  28   static_assert(
  29       !std::is_same_v<compute_node_options<Node, ilist_tag<TagA>>::type,
  30                       compute_node_options<Node, ilist_tag<void>>::type>,
  31       "default tag is void, different from TagA");
  32   static_assert(
  33       !std::is_same_v<compute_node_options<Node, ilist_tag<TagA>>::type,
  34                       compute_node_options<Node, ilist_tag<TagB>>::type>,
  35       "TagA is not TagB");
  36   static_assert(
  37       std::is_same_v<
  38           compute_node_options<Node, ilist_sentinel_tracking<false>>::type,
  39           compute_node_options<Node, ilist_sentinel_tracking<false>,
  40                                ilist_tag<void>>::type>,
  41       "default tag is void, even with sentinel tracking off");
  42   static_assert(
  43       std::is_same_v<
  44           compute_node_options<Node, ilist_sentinel_tracking<false>>::type,
  45           compute_node_options<Node, ilist_tag<void>,
  46                                ilist_sentinel_tracking<false>>::type>,
  47       "order shouldn't matter");
  48   static_assert(
  49       std::is_same_v<
  50           compute_node_options<Node, ilist_sentinel_tracking<true>>::type,
  51           compute_node_options<Node, ilist_sentinel_tracking<true>,
  52                                ilist_tag<void>>::type>,
  53       "default tag is void, even with sentinel tracking on");
  54   static_assert(
  55       std::is_same_v<
  56           compute_node_options<Node, ilist_sentinel_tracking<true>>::type,
  57           compute_node_options<Node, ilist_tag<void>,
  58                                ilist_sentinel_tracking<true>>::type>,
  59       "order shouldn't matter");
  60   static_assert(
  61       std::is_same_v<compute_node_options<Node, ilist_sentinel_tracking<true>,
  62                                           ilist_tag<TagA>>::type,
  63                      compute_node_options<Node, ilist_tag<TagA>,
  64                                           ilist_sentinel_tracking<true>>::type>,
  65       "order shouldn't matter with real tags");
  66 }
  67
  68 } // end namespace