base/containers/hash_tables_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/containers/hash_tables.h"
   6
   7 #include <stdint.h>
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12
  13 namespace {
  14
  15 class HashPairTest : public testing::Test {
  16 };
  17
  18 #define INSERT_PAIR_TEST(Type, value1, value2) \
  19   { \
  20     Type pair(value1, value2); \
  21     base::hash_map<Type, int> map; \
  22     map[pair] = 1; \
  23   }
  24
  25 // Verify that a hash_map can be constructed for pairs of integers of various
  26 // sizes.
  27 TEST_F(HashPairTest, IntegerPairs) {
  28   typedef std::pair<int16, int16> Int16Int16Pair;
  29   typedef std::pair<int16, int32> Int16Int32Pair;
  30   typedef std::pair<int16, int64> Int16Int64Pair;
  31
  32   INSERT_PAIR_TEST(Int16Int16Pair, 4, 6);
  33   INSERT_PAIR_TEST(Int16Int32Pair, 9, (1 << 29) + 378128932);
  34   INSERT_PAIR_TEST(Int16Int64Pair, 10,
  35                    (INT64_C(1) << 60) + INT64_C(78931732321));
  36
  37   typedef std::pair<int32, int16> Int32Int16Pair;
  38   typedef std::pair<int32, int32> Int32Int32Pair;
  39   typedef std::pair<int32, int64> Int32Int64Pair;
  40
  41   INSERT_PAIR_TEST(Int32Int16Pair, 4, 6);
  42   INSERT_PAIR_TEST(Int32Int32Pair, 9, (1 << 29) + 378128932);
  43   INSERT_PAIR_TEST(Int32Int64Pair, 10,
  44                    (INT64_C(1) << 60) + INT64_C(78931732321));
  45
  46   typedef std::pair<int64, int16> Int64Int16Pair;
  47   typedef std::pair<int64, int32> Int64Int32Pair;
  48   typedef std::pair<int64, int64> Int64Int64Pair;
  49
  50   INSERT_PAIR_TEST(Int64Int16Pair, 4, 6);
  51   INSERT_PAIR_TEST(Int64Int32Pair, 9, (1 << 29) + 378128932);
  52   INSERT_PAIR_TEST(Int64Int64Pair, 10,
  53                    (INT64_C(1) << 60) + INT64_C(78931732321));
  54 }
  55
  56 // Verify that base::hash_set<const char*> compares by pointer value, not as C
  57 // strings.
  58 TEST(HashTableTest, CharPointers) {
  59   std::string str1("hello");
  60   std::string str2("hello");
  61   base::hash_set<const char*> set;
  62
  63   set.insert(str1.c_str());
  64   EXPECT_EQ(1u, set.count(str1.c_str()));
  65   EXPECT_EQ(0u, set.count(str2.c_str()));
  66 }
  67
  68 }  // namespace