* Added breakpad support for Linux.

thirdparty/breakpad/processor/static_map_unittest.cc

@@ -0,0 +1,386 @@
+// 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(u_int32_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) u_int32_t(static_cast<u_int32_t>(stdmap.size()));
+    address += sizeof(u_int32_t);
+
+    // Nodes' offset:
+    u_int32_t* offsets = reinterpret_cast<u_int32_t*>(address);
+    address += sizeof(u_int32_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(u_int32_t));  // Set the number of nodes = -1
+  test_map = TestMap(data);
+  ASSERT_FALSE(test_map.ValidateInMemoryStructure());
+}
+
+TEST_F(TestInvalidMap, TestWrongOffsets) {
+  u_int32_t* header = reinterpret_cast<u_int32_t*>(data);
+  const u_int32_t kNumNodes = 2;
+  const u_int32_t kHeaderOffset =
+        sizeof(u_int32_t) + kNumNodes * (sizeof(u_int32_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) {
+  u_int32_t* header = reinterpret_cast<u_int32_t*>(data);
+  const u_int32_t kNumNodes = 2;
+  const u_int32_t kHeaderOffset =
+      sizeof(u_int32_t) + kNumNodes * (sizeof(u_int32_t) + sizeof(KeyType));
+  header[0] = kNumNodes;
+  header[1] = kHeaderOffset;
+  header[2] = kHeaderOffset + sizeof(ValueType);
+
+  KeyType* keys = reinterpret_cast<KeyType*>(
+      data + (kNumNodes + 1) * sizeof(u_int32_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(u_int32_t) + sizeof(KeyType) + sizeof(ValueType);
+    for (testcase = 0; testcase < kNumberTestCases; ++testcase) {
+      correct_size[testcase] =
+          sizeof(u_int32_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();
+}