third_party/tcmalloc/chromium/src/tests/packed-cache_test.cc

   1 // Copyright (c) 2007, Google Inc.
   2 // All rights reserved.
   3 //
   4 // Redistribution and use in source and binary forms, with or without
   5 // modification, are permitted provided that the following conditions are
   6 // met:
   7 //
   8 //     * Redistributions of source code must retain the above copyright
   9 // notice, this list of conditions and the following disclaimer.
  10 //     * Redistributions in binary form must reproduce the above
  11 // copyright notice, this list of conditions and the following disclaimer
  12 // in the documentation and/or other materials provided with the
  13 // distribution.
  14 //     * Neither the name of Google Inc. nor the names of its
  15 // contributors may be used to endorse or promote products derived from
  16 // this software without specific prior written permission.
  17 //
  18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29
  30 // ---
  31 // Author: Geoff Pike
  32
  33 #include <stdio.h>
  34 #include "base/logging.h"
  35 #include "packed-cache-inl.h"
  36
  37 static const int kHashbits = PackedCache<64, uint64>::kHashbits;
  38
  39 // A basic sanity test.
  40 void PackedCacheTest_basic() {
  41   PackedCache<32, uint32> cache(0);
  42   CHECK_EQ(cache.GetOrDefault(0, 1), 0);
  43   cache.Put(0, 17);
  44   CHECK(cache.Has(0));
  45   CHECK_EQ(cache.GetOrDefault(0, 1), 17);
  46   cache.Put(19, 99);
  47   CHECK(cache.Has(0) && cache.Has(19));
  48   CHECK_EQ(cache.GetOrDefault(0, 1), 17);
  49   CHECK_EQ(cache.GetOrDefault(19, 1), 99);
  50   // Knock <0, 17> out by using a conflicting key.
  51   cache.Put(1 << kHashbits, 22);
  52   CHECK(!cache.Has(0));
  53   CHECK_EQ(cache.GetOrDefault(0, 1), 1);
  54   CHECK_EQ(cache.GetOrDefault(1 << kHashbits, 1), 22);
  55 }
  56
  57 int main(int argc, char **argv) {
  58   PackedCacheTest_basic();
  59
  60   printf("PASS\n");
  61   return 0;
  62 }