unittests/ADT/IListBaseTest.cpp

   1 //===- unittests/ADT/IListBaseTest.cpp - ilist_base 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_base.h"
  10 #include "gtest/gtest.h"
  11
  12 using namespace llvm;
  13
  14 namespace {
  15
  16 // Test fixture.
  17 template <typename T> class IListBaseTest : public ::testing::Test {};
  18
  19 // Test variants with the same test.
  20 typedef ::testing::Types<ilist_base<false>, ilist_base<true>>
  21     IListBaseTestTypes;
  22 TYPED_TEST_CASE(IListBaseTest, IListBaseTestTypes);
  23
  24 TYPED_TEST(IListBaseTest, insertBeforeImpl) {
  25   typedef TypeParam list_base_type;
  26   typedef typename list_base_type::node_base_type node_base_type;
  27
  28   node_base_type S, A, B;
  29
  30   // [S] <-> [S]
  31   S.setPrev(&S);
  32   S.setNext(&S);
  33
  34   // [S] <-> A <-> [S]
  35   list_base_type::insertBeforeImpl(S, A);
  36   EXPECT_EQ(&A, S.getPrev());
  37   EXPECT_EQ(&S, A.getPrev());
  38   EXPECT_EQ(&A, S.getNext());
  39   EXPECT_EQ(&S, A.getNext());
  40
  41   // [S] <-> A <-> B <-> [S]
  42   list_base_type::insertBeforeImpl(S, B);
  43   EXPECT_EQ(&B, S.getPrev());
  44   EXPECT_EQ(&A, B.getPrev());
  45   EXPECT_EQ(&S, A.getPrev());
  46   EXPECT_EQ(&A, S.getNext());
  47   EXPECT_EQ(&B, A.getNext());
  48   EXPECT_EQ(&S, B.getNext());
  49 }
  50
  51 TYPED_TEST(IListBaseTest, removeImpl) {
  52   typedef TypeParam list_base_type;
  53   typedef typename list_base_type::node_base_type node_base_type;
  54
  55   node_base_type S, A, B;
  56
  57   // [S] <-> A <-> B <-> [S]
  58   S.setPrev(&S);
  59   S.setNext(&S);
  60   list_base_type::insertBeforeImpl(S, A);
  61   list_base_type::insertBeforeImpl(S, B);
  62
  63   // [S] <-> B <-> [S]
  64   list_base_type::removeImpl(A);
  65   EXPECT_EQ(&B, S.getPrev());
  66   EXPECT_EQ(&S, B.getPrev());
  67   EXPECT_EQ(&B, S.getNext());
  68   EXPECT_EQ(&S, B.getNext());
  69   EXPECT_EQ(nullptr, A.getPrev());
  70   EXPECT_EQ(nullptr, A.getNext());
  71
  72   // [S] <-> [S]
  73   list_base_type::removeImpl(B);
  74   EXPECT_EQ(&S, S.getPrev());
  75   EXPECT_EQ(&S, S.getNext());
  76   EXPECT_EQ(nullptr, B.getPrev());
  77   EXPECT_EQ(nullptr, B.getNext());
  78 }
  79
  80 TYPED_TEST(IListBaseTest, removeRangeImpl) {
  81   typedef TypeParam list_base_type;
  82   typedef typename list_base_type::node_base_type node_base_type;
  83
  84   node_base_type S, A, B, C, D;
  85
  86   // [S] <-> A <-> B <-> C <-> D <-> [S]
  87   S.setPrev(&S);
  88   S.setNext(&S);
  89   list_base_type::insertBeforeImpl(S, A);
  90   list_base_type::insertBeforeImpl(S, B);
  91   list_base_type::insertBeforeImpl(S, C);
  92   list_base_type::insertBeforeImpl(S, D);
  93
  94   // [S] <-> A <-> D <-> [S]
  95   list_base_type::removeRangeImpl(B, D);
  96   EXPECT_EQ(&D, S.getPrev());
  97   EXPECT_EQ(&A, D.getPrev());
  98   EXPECT_EQ(&S, A.getPrev());
  99   EXPECT_EQ(&A, S.getNext());
 100   EXPECT_EQ(&D, A.getNext());
 101   EXPECT_EQ(&S, D.getNext());
 102   EXPECT_EQ(nullptr, B.getPrev());
 103   EXPECT_EQ(nullptr, C.getNext());
 104 }
 105
 106 TYPED_TEST(IListBaseTest, removeRangeImplAllButSentinel) {
 107   typedef TypeParam list_base_type;
 108   typedef typename list_base_type::node_base_type node_base_type;
 109
 110   node_base_type S, A, B;
 111
 112   // [S] <-> A <-> B <-> [S]
 113   S.setPrev(&S);
 114   S.setNext(&S);
 115   list_base_type::insertBeforeImpl(S, A);
 116   list_base_type::insertBeforeImpl(S, B);
 117
 118   // [S] <-> [S]
 119   list_base_type::removeRangeImpl(A, S);
 120   EXPECT_EQ(&S, S.getPrev());
 121   EXPECT_EQ(&S, S.getNext());
 122   EXPECT_EQ(nullptr, A.getPrev());
 123   EXPECT_EQ(nullptr, B.getNext());
 124 }
 125
 126 TYPED_TEST(IListBaseTest, transferBeforeImpl) {
 127   typedef TypeParam list_base_type;
 128   typedef typename list_base_type::node_base_type node_base_type;
 129
 130   node_base_type S1, S2, A, B, C, D, E;
 131
 132   // [S1] <-> A <-> B <-> C <-> [S1]
 133   S1.setPrev(&S1);
 134   S1.setNext(&S1);
 135   list_base_type::insertBeforeImpl(S1, A);
 136   list_base_type::insertBeforeImpl(S1, B);
 137   list_base_type::insertBeforeImpl(S1, C);
 138
 139   // [S2] <-> D <-> E <-> [S2]
 140   S2.setPrev(&S2);
 141   S2.setNext(&S2);
 142   list_base_type::insertBeforeImpl(S2, D);
 143   list_base_type::insertBeforeImpl(S2, E);
 144
 145   // [S1] <-> C <-> [S1]
 146   list_base_type::transferBeforeImpl(D, A, C);
 147   EXPECT_EQ(&C, S1.getPrev());
 148   EXPECT_EQ(&S1, C.getPrev());
 149   EXPECT_EQ(&C, S1.getNext());
 150   EXPECT_EQ(&S1, C.getNext());
 151
 152   // [S2] <-> A <-> B <-> D <-> E <-> [S2]
 153   EXPECT_EQ(&E, S2.getPrev());
 154   EXPECT_EQ(&D, E.getPrev());
 155   EXPECT_EQ(&B, D.getPrev());
 156   EXPECT_EQ(&A, B.getPrev());
 157   EXPECT_EQ(&S2, A.getPrev());
 158   EXPECT_EQ(&A, S2.getNext());
 159   EXPECT_EQ(&B, A.getNext());
 160   EXPECT_EQ(&D, B.getNext());
 161   EXPECT_EQ(&E, D.getNext());
 162   EXPECT_EQ(&S2, E.getNext());
 163 }
 164
 165 } // end namespace