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<compute_node_options<Node>::type,
26                    compute_node_options<Node, ilist_tag<void>>::type>::value,
27       "default tag is void");
28   static_assert(
29       !std::is_same<compute_node_options<Node, ilist_tag<TagA>>::type,
30                     compute_node_options<Node, ilist_tag<void>>::type>::value,
31       "default tag is void, different from TagA");
32   static_assert(
33       !std::is_same<compute_node_options<Node, ilist_tag<TagA>>::type,
34                     compute_node_options<Node, ilist_tag<TagB>>::type>::value,
35       "TagA is not TagB");
36   static_assert(
37       std::is_same<
38           compute_node_options<Node, ilist_sentinel_tracking<false>>::type,
39           compute_node_options<Node, ilist_sentinel_tracking<false>,
40                                ilist_tag<void>>::type>::value,
41       "default tag is void, even with sentinel tracking off");
42   static_assert(
43       std::is_same<
44           compute_node_options<Node, ilist_sentinel_tracking<false>>::type,
45           compute_node_options<Node, ilist_tag<void>,
46                                ilist_sentinel_tracking<false>>::type>::value,
47       "order shouldn't matter");
48   static_assert(
49       std::is_same<
50           compute_node_options<Node, ilist_sentinel_tracking<true>>::type,
51           compute_node_options<Node, ilist_sentinel_tracking<true>,
52                                ilist_tag<void>>::type>::value,
53       "default tag is void, even with sentinel tracking on");
54   static_assert(
55       std::is_same<
56           compute_node_options<Node, ilist_sentinel_tracking<true>>::type,
57           compute_node_options<Node, ilist_tag<void>,
58                                ilist_sentinel_tracking<true>>::type>::value,
59       "order shouldn't matter");
60   static_assert(
61       std::is_same<
62           compute_node_options<Node, ilist_sentinel_tracking<true>,
63                                ilist_tag<TagA>>::type,
64           compute_node_options<Node, ilist_tag<TagA>,
65                                ilist_sentinel_tracking<true>>::type>::value,
66       "order shouldn't matter with real tags");
67 }
68 
69 } // end namespace
70