The Tor Browser: toolkit/crashreporter/google-breakpad/src/processor/static_map

toolkit/crashreporter/google-breakpad/src/processor/static_map_unittest.cc@b8a032363ba2 (annotated)

toolkit/crashreporter/google-breakpad/src/processor/static_map_unittest.cc

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 // Copyright (c) 2010 Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 // copyright notice, this list of conditions and the following disclaimer
 // in the documentation and/or other materials provided with the
 // distribution.
 //     * Neither the name of Google Inc. nor the names of its
 // contributors may be used to endorse or promote products derived from
 // this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 // static_map_unittest.cc: Unit tests for StaticMap.
 //
 // Author: Siyang Xie (lambxsy@google.com)
 #include <climits>
 #include <map>
 #include "breakpad_googletest_includes.h"
 #include "processor/static_map-inl.h"
 typedef int ValueType;
 typedef int KeyType;
 typedef google_breakpad::StaticMap< KeyType, ValueType > TestMap;
 typedef std::map< KeyType, ValueType > StdMap;
 template<typename Key, typename Value>
 class SimpleMapSerializer {
  public:
   static char* Serialize(const std::map<Key, Value> &stdmap,
                    unsigned int* size = NULL) {
     unsigned int size_per_node =
         sizeof(uint32_t) + sizeof(Key) + sizeof(Value);
     unsigned int memsize = sizeof(int32_t) + size_per_node * stdmap.size();
     if (size) *size = memsize;
     // Allocate memory for serialized data:
     char* mem = reinterpret_cast<char*>(operator new(memsize));
     char* address = mem;
     // Writer the number of nodes:
     new (address) uint32_t(static_cast<uint32_t>(stdmap.size()));
     address += sizeof(uint32_t);
     // Nodes' offset:
     uint32_t* offsets = reinterpret_cast<uint32_t*>(address);
     address += sizeof(uint32_t) * stdmap.size();
     // Keys:
     Key* keys = reinterpret_cast<Key*>(address);
     address += sizeof(Key) * stdmap.size();
     // Traversing map:
     typename std::map<Key, Value>::const_iterator iter = stdmap.begin();
     for (int index = 0; iter != stdmap.end(); ++iter, ++index) {
       offsets[index] = static_cast<unsigned int>(address - mem);
       keys[index] = iter->first;
       new (address) Value(iter->second);
       address += sizeof(Value);
     }
     return mem;
   }
 };
 class TestInvalidMap : public ::testing::Test {
  protected:
   void SetUp() {
     memset(data, 0, kMemorySize);
   }
   // 40 Bytes memory can hold a StaticMap with up to 3 nodes.
   static const int kMemorySize = 40;
   char data[kMemorySize];
   TestMap test_map;
 };
 TEST_F(TestInvalidMap, TestNegativeNumberNodes) {
   memset(data, 0xff, sizeof(uint32_t));  // Set the number of nodes = -1
   test_map = TestMap(data);
   ASSERT_FALSE(test_map.ValidateInMemoryStructure());
 }
 TEST_F(TestInvalidMap, TestWrongOffsets) {
   uint32_t* header = reinterpret_cast<uint32_t*>(data);
   const uint32_t kNumNodes = 2;
   const uint32_t kHeaderOffset =
         sizeof(uint32_t) + kNumNodes * (sizeof(uint32_t) + sizeof(KeyType));
   header[0] = kNumNodes;
   header[1] = kHeaderOffset + 3;   // Wrong offset for first node
   test_map = TestMap(data);
   ASSERT_FALSE(test_map.ValidateInMemoryStructure());
   header[1] = kHeaderOffset;       // Correct offset for first node
   header[2] = kHeaderOffset - 1;   // Wrong offset for second node
   test_map = TestMap(data);
   ASSERT_FALSE(test_map.ValidateInMemoryStructure());
 }
 TEST_F(TestInvalidMap, TestUnSortedKeys) {
   uint32_t* header = reinterpret_cast<uint32_t*>(data);
   const uint32_t kNumNodes = 2;
   const uint32_t kHeaderOffset =
       sizeof(uint32_t) + kNumNodes * (sizeof(uint32_t) + sizeof(KeyType));
   header[0] = kNumNodes;
   header[1] = kHeaderOffset;
   header[2] = kHeaderOffset + sizeof(ValueType);
   KeyType* keys = reinterpret_cast<KeyType*>(
       data + (kNumNodes + 1) * sizeof(uint32_t));
   // Set keys in non-increasing order.
   keys[0] = 10;
   keys[1] = 7;
   test_map = TestMap(data);
   ASSERT_FALSE(test_map.ValidateInMemoryStructure());
 }
 class TestValidMap : public ::testing::Test {
  protected:
   void SetUp() {
     int testcase = 0;
     // Empty map.
     map_data[testcase] =
         serializer.Serialize(std_map[testcase], &size[testcase]);
     test_map[testcase] = TestMap(map_data[testcase]);
     ++testcase;
     // Single element.
     std_map[testcase].insert(std::make_pair(2, 8));
     map_data[testcase] =
         serializer.Serialize(std_map[testcase], &size[testcase]);
     test_map[testcase] = TestMap(map_data[testcase]);
     ++testcase;
     // 100 elements.
     for (int i = 0; i < 100; ++i)
           std_map[testcase].insert(std::make_pair(i, 2 * i));
     map_data[testcase] =
         serializer.Serialize(std_map[testcase], &size[testcase]);
     test_map[testcase] = TestMap(map_data[testcase]);
     ++testcase;
     // 1000 random elements.
     for (int i = 0; i < 1000; ++i)
       std_map[testcase].insert(std::make_pair(rand(), rand()));
     map_data[testcase] =
         serializer.Serialize(std_map[testcase], &size[testcase]);
     test_map[testcase] = TestMap(map_data[testcase]);
     // Set correct size of memory allocation for each test case.
     unsigned int size_per_node =
         sizeof(uint32_t) + sizeof(KeyType) + sizeof(ValueType);
     for (testcase = 0; testcase < kNumberTestCases; ++testcase) {
       correct_size[testcase] =
           sizeof(uint32_t) + std_map[testcase].size() * size_per_node;
     }
   }
   void TearDown() {
     for (int i = 0;i < kNumberTestCases; ++i)
       delete map_data[i];
   }
   void IteratorTester(int test_case) {
     // scan through:
     iter_test = test_map[test_case].begin();
     iter_std = std_map[test_case].begin();
     for (; iter_test != test_map[test_case].end() &&
            iter_std != std_map[test_case].end();
          ++iter_test, ++iter_std) {
       ASSERT_EQ(iter_test.GetKey(), iter_std->first);
       ASSERT_EQ(*(iter_test.GetValuePtr()), iter_std->second);
     }
     ASSERT_TRUE(iter_test == test_map[test_case].end()
              && iter_std == std_map[test_case].end());
     // Boundary testcase.
     if (!std_map[test_case].empty()) {
       // rear boundary case:
       iter_test = test_map[test_case].end();
       iter_std = std_map[test_case].end();
       --iter_std;
       --iter_test;
       ASSERT_EQ(iter_test.GetKey(), iter_std->first);
       ASSERT_EQ(*(iter_test.GetValuePtr()), iter_std->second);
       ++iter_test;
       ++iter_std;
       ASSERT_TRUE(iter_test == test_map[test_case].end());
       --iter_test;
       --iter_std;
       ASSERT_TRUE(iter_test != test_map[test_case].end());
       ASSERT_TRUE(iter_test == test_map[test_case].last());
       ASSERT_EQ(iter_test.GetKey(), iter_std->first);
       ASSERT_EQ(*(iter_test.GetValuePtr()), iter_std->second);
       // front boundary case:
       iter_test = test_map[test_case].begin();
       --iter_test;
       ASSERT_TRUE(iter_test == test_map[test_case].begin());
     }
   }
   void CompareLookupResult(int test_case) {
     bool found1 = (iter_test != test_map[test_case].end());
     bool found2 = (iter_std != std_map[test_case].end());
     ASSERT_EQ(found1, found2);
     if (found1 && found2) {
       ASSERT_EQ(iter_test.GetKey(), iter_std->first);
       ASSERT_EQ(*(iter_test.GetValuePtr()), iter_std->second);
     }
   }
   void FindTester(int test_case, const KeyType &key) {
     iter_test = test_map[test_case].find(key);
     iter_std = std_map[test_case].find(key);
     CompareLookupResult(test_case);
   }
   void LowerBoundTester(int test_case, const KeyType &key) {
     iter_test = test_map[test_case].lower_bound(key);
     iter_std = std_map[test_case].lower_bound(key);
     CompareLookupResult(test_case);
   }
   void UpperBoundTester(int test_case, const KeyType &key) {
     iter_test = test_map[test_case].upper_bound(key);
     iter_std = std_map[test_case].upper_bound(key);
     CompareLookupResult(test_case);
   }
   void LookupTester(int test_case) {
     StdMap::const_iterator iter;
     // Test find():
     for (iter = std_map[test_case].begin();
         iter != std_map[test_case].end();
         ++iter) {
       FindTester(test_case, iter->first);
       FindTester(test_case, iter->first + 1);
       FindTester(test_case, iter->first - 1);
     }
     FindTester(test_case, INT_MIN);
     FindTester(test_case, INT_MAX);
     // random test:
     for (int i = 0; i < rand()%5000 + 5000; ++i)
       FindTester(test_case, rand());
     // Test lower_bound():
     for (iter = std_map[test_case].begin();
         iter != std_map[test_case].end();
         ++iter) {
       LowerBoundTester(test_case, iter->first);
       LowerBoundTester(test_case, iter->first + 1);
       LowerBoundTester(test_case, iter->first - 1);
     }
     LowerBoundTester(test_case, INT_MIN);
     LowerBoundTester(test_case, INT_MAX);
     // random test:
     for (int i = 0; i < rand()%5000 + 5000; ++i)
       LowerBoundTester(test_case, rand());
     // Test upper_bound():
     for (iter = std_map[test_case].begin();
         iter != std_map[test_case].end();
         ++iter) {
       UpperBoundTester(test_case, iter->first);
       UpperBoundTester(test_case, iter->first + 1);
       UpperBoundTester(test_case, iter->first - 1);
     }
     UpperBoundTester(test_case, INT_MIN);
     UpperBoundTester(test_case, INT_MAX);
     // random test:
     for (int i = 0; i < rand()%5000 + 5000; ++i)
       UpperBoundTester(test_case, rand());
   }
   static const int kNumberTestCases = 4;
   StdMap std_map[kNumberTestCases];
   TestMap test_map[kNumberTestCases];
   TestMap::const_iterator iter_test;
   StdMap::const_iterator iter_std;
   char* map_data[kNumberTestCases];
   unsigned int size[kNumberTestCases];
   unsigned int correct_size[kNumberTestCases];
   SimpleMapSerializer<KeyType, ValueType> serializer;
 };
 TEST_F(TestValidMap, TestEmptyMap) {
   int test_case = 0;
   // Assert memory size allocated during serialization is correct.
   ASSERT_EQ(correct_size[test_case], size[test_case]);
   // Sanity check of serialized data:
   ASSERT_TRUE(test_map[test_case].ValidateInMemoryStructure());
   ASSERT_EQ(std_map[test_case].empty(), test_map[test_case].empty());
   ASSERT_EQ(std_map[test_case].size(), test_map[test_case].size());
   // Test Iterator.
   IteratorTester(test_case);
   // Test lookup operations.
   LookupTester(test_case);
 }
 TEST_F(TestValidMap, TestSingleElement) {
   int test_case = 1;
   // Assert memory size allocated during serialization is correct.
   ASSERT_EQ(correct_size[test_case], size[test_case]);
   // Sanity check of serialized data:
   ASSERT_TRUE(test_map[test_case].ValidateInMemoryStructure());
   ASSERT_EQ(std_map[test_case].empty(), test_map[test_case].empty());
   ASSERT_EQ(std_map[test_case].size(), test_map[test_case].size());
   // Test Iterator.
   IteratorTester(test_case);
   // Test lookup operations.
   LookupTester(test_case);
 }
 TEST_F(TestValidMap, Test100Elements) {
   int test_case = 2;
   // Assert memory size allocated during serialization is correct.
   ASSERT_EQ(correct_size[test_case], size[test_case]);
   // Sanity check of serialized data:
   ASSERT_TRUE(test_map[test_case].ValidateInMemoryStructure());
   ASSERT_EQ(std_map[test_case].empty(), test_map[test_case].empty());
   ASSERT_EQ(std_map[test_case].size(), test_map[test_case].size());
   // Test Iterator.
   IteratorTester(test_case);
   // Test lookup operations.
   LookupTester(test_case);
 }
 TEST_F(TestValidMap, Test1000RandomElements) {
   int test_case = 3;
   // Assert memory size allocated during serialization is correct.
   ASSERT_EQ(correct_size[test_case], size[test_case]);
   // Sanity check of serialized data:
   ASSERT_TRUE(test_map[test_case].ValidateInMemoryStructure());
   ASSERT_EQ(std_map[test_case].empty(), test_map[test_case].empty());
   ASSERT_EQ(std_map[test_case].size(), test_map[test_case].size());
   // Test Iterator.
   IteratorTester(test_case);
   // Test lookup operations.
   LookupTester(test_case);
 }
 int main(int argc, char *argv[]) {
   ::testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }

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toolkit/crashreporter/google-breakpad/src/processor/static_map_unittest.cc@b8a032363ba2 (annotated)

toolkit/crashreporter/google-breakpad/src/processor/static_map_unittest.cc