gcc/ordered-hash-map-tests.cc

   1 /* Unit tests for ordered-hash-map.h.
   2    Copyright (C) 2015-2021 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #include "config.h"
  21 #include "system.h"
  22 #include "coretypes.h"
  23 #include "tm.h"
  24 #include "opts.h"
  25 #include "hash-set.h"
  26 #include "fixed-value.h"
  27 #include "alias.h"
  28 #include "flags.h"
  29 #include "symtab.h"
  30 #include "tree-core.h"
  31 #include "stor-layout.h"
  32 #include "tree.h"
  33 #include "stringpool.h"
  34 #include "ordered-hash-map.h"
  35 #include "selftest.h"
  36
  37 #if CHECKING_P
  38
  39 namespace selftest {
  40
  41 /* Populate *OUT_KVS with the key/value pairs of M.  */
  42
  43 template <typename HashMap, typename Key, typename Value>
  44 static void
  45 get_kv_pairs (const HashMap &m,
  46               auto_vec<std::pair<Key, Value> > *out_kvs)
  47 {
  48   for (typename HashMap::iterator iter = m.begin ();
  49        iter != m.end ();
  50        ++iter)
  51     out_kvs->safe_push (std::make_pair ((*iter).first, (*iter).second));
  52 }
  53
  54 /* Construct an ordered_hash_map <const char *, int> and verify that
  55    various operations work correctly.  */
  56
  57 static void
  58 test_map_of_strings_to_int ()
  59 {
  60   ordered_hash_map <const char *, int> m;
  61
  62   const char *ostrich = "ostrich";
  63   const char *elephant = "elephant";
  64   const char *ant = "ant";
  65   const char *spider = "spider";
  66   const char *millipede = "Illacme plenipes";
  67   const char *eric = "half a bee";
  68
  69   /* A fresh hash_map should be empty.  */
  70   ASSERT_EQ (0, m.elements ());
  71   ASSERT_EQ (NULL, m.get (ostrich));
  72
  73   /* Populate the hash_map.  */
  74   ASSERT_EQ (false, m.put (ostrich, 2));
  75   ASSERT_EQ (false, m.put (elephant, 4));
  76   ASSERT_EQ (false, m.put (ant, 6));
  77   ASSERT_EQ (false, m.put (spider, 8));
  78   ASSERT_EQ (false, m.put (millipede, 750));
  79   ASSERT_EQ (false, m.put (eric, 3));
  80
  81   /* Verify that we can recover the stored values.  */
  82   ASSERT_EQ (6, m.elements ());
  83   ASSERT_EQ (2, *m.get (ostrich));
  84   ASSERT_EQ (4, *m.get (elephant));
  85   ASSERT_EQ (6, *m.get (ant));
  86   ASSERT_EQ (8, *m.get (spider));
  87   ASSERT_EQ (750, *m.get (millipede));
  88   ASSERT_EQ (3, *m.get (eric));
  89
  90   /* Verify that the order of insertion is preserved.  */
  91   auto_vec<std::pair<const char *, int> > kvs;
  92   get_kv_pairs (m, &kvs);
  93   ASSERT_EQ (kvs.length (), 6);
  94   ASSERT_EQ (kvs[0].first, ostrich);
  95   ASSERT_EQ (kvs[0].second, 2);
  96   ASSERT_EQ (kvs[1].first, elephant);
  97   ASSERT_EQ (kvs[1].second, 4);
  98   ASSERT_EQ (kvs[2].first, ant);
  99   ASSERT_EQ (kvs[2].second, 6);
 100   ASSERT_EQ (kvs[3].first, spider);
 101   ASSERT_EQ (kvs[3].second, 8);
 102   ASSERT_EQ (kvs[4].first, millipede);
 103   ASSERT_EQ (kvs[4].second, 750);
 104   ASSERT_EQ (kvs[5].first, eric);
 105   ASSERT_EQ (kvs[5].second, 3);
 106 }
 107
 108 /* Construct an ordered_hash_map using int_hash and verify that various
 109    operations work correctly.  */
 110
 111 static void
 112 test_map_of_int_to_strings ()
 113 {
 114   const int EMPTY = -1;
 115   const int DELETED = -2;
 116   typedef int_hash <int, EMPTY, DELETED> int_hash_t;
 117   ordered_hash_map <int_hash_t, const char *> m;
 118
 119   const char *ostrich = "ostrich";
 120   const char *elephant = "elephant";
 121   const char *ant = "ant";
 122   const char *spider = "spider";
 123   const char *millipede = "Illacme plenipes";
 124   const char *eric = "half a bee";
 125
 126   /* A fresh hash_map should be empty.  */
 127   ASSERT_EQ (0, m.elements ());
 128   ASSERT_EQ (NULL, m.get (2));
 129
 130   /* Populate the hash_map.  */
 131   ASSERT_EQ (false, m.put (2, ostrich));
 132   ASSERT_EQ (false, m.put (4, elephant));
 133   ASSERT_EQ (false, m.put (6, ant));
 134   ASSERT_EQ (false, m.put (8, spider));
 135   ASSERT_EQ (false, m.put (750, millipede));
 136   ASSERT_EQ (false, m.put (3, eric));
 137
 138   /* Verify that we can recover the stored values.  */
 139   ASSERT_EQ (6, m.elements ());
 140   ASSERT_EQ (*m.get (2), ostrich);
 141   ASSERT_EQ (*m.get (4), elephant);
 142   ASSERT_EQ (*m.get (6), ant);
 143   ASSERT_EQ (*m.get (8), spider);
 144   ASSERT_EQ (*m.get (750), millipede);
 145   ASSERT_EQ (*m.get (3), eric);
 146
 147   /* Verify that the order of insertion is preserved.  */
 148   auto_vec<std::pair<int, const char *> > kvs;
 149   get_kv_pairs (m, &kvs);
 150   ASSERT_EQ (kvs.length (), 6);
 151   ASSERT_EQ (kvs[0].first, 2);
 152   ASSERT_EQ (kvs[0].second, ostrich);
 153   ASSERT_EQ (kvs[1].first, 4);
 154   ASSERT_EQ (kvs[1].second, elephant);
 155   ASSERT_EQ (kvs[2].first, 6);
 156   ASSERT_EQ (kvs[2].second, ant);
 157   ASSERT_EQ (kvs[3].first, 8);
 158   ASSERT_EQ (kvs[3].second, spider);
 159   ASSERT_EQ (kvs[4].first, 750);
 160   ASSERT_EQ (kvs[4].second, millipede);
 161   ASSERT_EQ (kvs[5].first, 3);
 162   ASSERT_EQ (kvs[5].second, eric);
 163 }
 164
 165 /* Verify that we can remove items from an ordered_hash_map.  */
 166
 167 static void
 168 test_removal ()
 169 {
 170   ordered_hash_map <const char *, int> m;
 171
 172   const char *ostrich = "ostrich";
 173   ASSERT_EQ (false, m.put (ostrich, 2));
 174
 175   ASSERT_EQ (1, m.elements ());
 176   ASSERT_EQ (2, *m.get (ostrich));
 177
 178   {
 179     auto_vec<std::pair<const char *, int> > kvs;
 180     get_kv_pairs (m, &kvs);
 181     ASSERT_EQ (kvs.length (), 1);
 182     ASSERT_EQ (kvs[0].first, ostrich);
 183     ASSERT_EQ (kvs[0].second, 2);
 184   }
 185
 186   m.remove (ostrich);
 187
 188   ASSERT_EQ (0, m.elements ());
 189   {
 190     auto_vec<std::pair<const char *, int> > kvs;
 191     get_kv_pairs (m, &kvs);
 192     ASSERT_EQ (kvs.length (), 0);
 193   }
 194
 195   /* Reinsertion (with a different value).  */
 196   ASSERT_EQ (false, m.put (ostrich, 42));
 197   ASSERT_EQ (1, m.elements ());
 198   ASSERT_EQ (42, *m.get (ostrich));
 199   {
 200     auto_vec<std::pair<const char *, int> > kvs;
 201     get_kv_pairs (m, &kvs);
 202     ASSERT_EQ (kvs.length (), 1);
 203     ASSERT_EQ (kvs[0].first, ostrich);
 204     ASSERT_EQ (kvs[0].second, 42);
 205   }
 206 }
 207
 208 /* Verify that ordered_hash_map's copy-ctor works.  */
 209
 210 static void
 211 test_copy_ctor ()
 212 {
 213   ordered_hash_map <const char *, int> m;
 214
 215   const char *ostrich = "ostrich";
 216   ASSERT_EQ (false, m.put (ostrich, 2));
 217
 218   ASSERT_EQ (1, m.elements ());
 219   ASSERT_EQ (2, *m.get (ostrich));
 220
 221   ordered_hash_map <const char *, int> copy (m);
 222   ASSERT_EQ (1, copy.elements ());
 223   ASSERT_EQ (2, *copy.get (ostrich));
 224
 225   /* Remove from source.  */
 226   m.remove (ostrich);
 227   ASSERT_EQ (0, m.elements ());
 228
 229   /* Copy should be unaffected.  */
 230   ASSERT_EQ (1, copy.elements ());
 231   ASSERT_EQ (2, *copy.get (ostrich));
 232 }
 233
 234 /* Run all of the selftests within this file.  */
 235
 236 void
 237 ordered_hash_map_tests_cc_tests ()
 238 {
 239   test_map_of_strings_to_int ();
 240   test_map_of_int_to_strings ();
 241   test_removal ();
 242   test_copy_ctor ();
 243 }
 244
 245 } // namespace selftest
 246
 247 #endif /* CHECKING_P */