The Tor Browser: comparison toolkit/crashreporter/google-breakpad/src/common/memory_range

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+:e85a17e7a93c
+// Copyright (c) 2011, 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.
+// memory_range_unittest.cc: Unit tests for google_breakpad::MemoryRange.
+#include "breakpad_googletest_includes.h"
+#include "common/memory_range.h"
+using google_breakpad::MemoryRange;
+using testing::Message;
+namespace {
+const uint32_t kBuffer[10] = { 0 };
+const size_t kBufferSize = sizeof(kBuffer);
+const uint8_t* kBufferPointer = reinterpret_cast<const uint8_t*>(kBuffer);
+// Test vectors for verifying Covers, GetData, and Subrange.
+const struct {
+bool valid;
+size_t offset;
+size_t length;
+} kSubranges[] = {
+{ true, 0, 0 },
+{ true, 0, 2 },
+{ true, 0, kBufferSize },
+{ true, 2, 0 },
+{ true, 2, 4 },
+{ true, 2, kBufferSize - 2 },
+{ true, kBufferSize - 1, 1 },
+{ false, kBufferSize, 0 },
+{ false, kBufferSize, static_cast<size_t>(-1) },
+{ false, kBufferSize + 1, 0 },
+{ false, static_cast<size_t>(-1), 2 },
+{ false, 1, kBufferSize },
+{ false, kBufferSize - 1, 2 },
+{ false, 0, static_cast<size_t>(-1) },
+{ false, 1, static_cast<size_t>(-1) },
+};
+const size_t kNumSubranges = sizeof(kSubranges) / sizeof(kSubranges[0]);
+// Test vectors for verifying GetArrayElement.
+const struct {
+size_t offset;
+size_t size;
+size_t index;
+const void* const pointer;
+} kElements[] = {
+// Valid array elemenets
+{ 0, 1, 0, kBufferPointer },
+{ 0, 1, 1, kBufferPointer + 1 },
+{ 0, 1, kBufferSize - 1, kBufferPointer + kBufferSize - 1 },
+{ 0, 2, 1, kBufferPointer + 2 },
+{ 0, 4, 2, kBufferPointer + 8 },
+{ 0, 4, 9, kBufferPointer + 36 },
+{ kBufferSize - 1, 1, 0, kBufferPointer + kBufferSize - 1 },
+// Invalid array elemenets
+{ 0, 1, kBufferSize, NULL },
+{ 0, 4, 10, NULL },
+{ kBufferSize - 1, 1, 1, NULL },
+{ kBufferSize - 1, 2, 0, NULL },
+{ kBufferSize, 1, 0, NULL },
+};
+const size_t kNumElements = sizeof(kElements) / sizeof(kElements[0]);
+}  // namespace
+TEST(MemoryRangeTest, DefaultConstructor) {
+MemoryRange range;
+EXPECT_EQ(NULL, range.data());
+EXPECT_EQ(0U, range.length());
+}
+TEST(MemoryRangeTest, ConstructorWithDataAndLength) {
+MemoryRange range(kBuffer, kBufferSize);
+EXPECT_EQ(kBufferPointer, range.data());
+EXPECT_EQ(kBufferSize, range.length());
+}
+TEST(MemoryRangeTest, Reset) {
+MemoryRange range;
+range.Reset();
+EXPECT_EQ(NULL, range.data());
+EXPECT_EQ(0U, range.length());
+range.Set(kBuffer, kBufferSize);
+EXPECT_EQ(kBufferPointer, range.data());
+EXPECT_EQ(kBufferSize, range.length());
+range.Reset();
+EXPECT_EQ(NULL, range.data());
+EXPECT_EQ(0U, range.length());
+}
+TEST(MemoryRangeTest, Set) {
+MemoryRange range;
+range.Set(kBuffer, kBufferSize);
+EXPECT_EQ(kBufferPointer, range.data());
+EXPECT_EQ(kBufferSize, range.length());
+range.Set(NULL, 0);
+EXPECT_EQ(NULL, range.data());
+EXPECT_EQ(0U, range.length());
+}
+TEST(MemoryRangeTest, SubrangeOfEmptyMemoryRange) {
+MemoryRange range;
+MemoryRange subrange = range.Subrange(0, 10);
+EXPECT_EQ(NULL, subrange.data());
+EXPECT_EQ(0U, subrange.length());
+}
+TEST(MemoryRangeTest, SubrangeAndGetData) {
+MemoryRange range(kBuffer, kBufferSize);
+for (size_t i = 0; i < kNumSubranges; ++i) {
+bool valid = kSubranges[i].valid;
+size_t sub_offset = kSubranges[i].offset;
+size_t sub_length = kSubranges[i].length;
+SCOPED_TRACE(Message() << "offset=" << sub_offset
+<< ", length=" << sub_length);
+MemoryRange subrange = range.Subrange(sub_offset, sub_length);
+if (valid) {
+EXPECT_TRUE(range.Covers(sub_offset, sub_length));
+EXPECT_EQ(kBufferPointer + sub_offset,
+range.GetData(sub_offset, sub_length));
+EXPECT_EQ(kBufferPointer + sub_offset, subrange.data());
+EXPECT_EQ(sub_length, subrange.length());
+} else {
+EXPECT_FALSE(range.Covers(sub_offset, sub_length));
+EXPECT_EQ(NULL, range.GetData(sub_offset, sub_length));
+EXPECT_EQ(NULL, subrange.data());
+EXPECT_EQ(0U, subrange.length());
+}
+}
+}
+TEST(MemoryRangeTest, GetDataWithTemplateType) {
+MemoryRange range(kBuffer, kBufferSize);
+const char* char_pointer = range.GetData<char>(0);
+EXPECT_EQ(reinterpret_cast<const char*>(kBufferPointer), char_pointer);
+const int* int_pointer = range.GetData<int>(0);
+EXPECT_EQ(reinterpret_cast<const int*>(kBufferPointer), int_pointer);
+}
+TEST(MemoryRangeTest, GetArrayElement) {
+MemoryRange range(kBuffer, kBufferSize);
+for (size_t i = 0; i < kNumElements; ++i) {
+size_t element_offset = kElements[i].offset;
+size_t element_size = kElements[i].size;
+unsigned element_index = kElements[i].index;
+const void* const element_pointer = kElements[i].pointer;
+SCOPED_TRACE(Message() << "offset=" << element_offset
+<< ", size=" << element_size
+<< ", index=" << element_index);
+EXPECT_EQ(element_pointer, range.GetArrayElement(
+element_offset, element_size, element_index));
+}
+}
+TEST(MemoryRangeTest, GetArrayElmentWithTemplateType) {
+MemoryRange range(kBuffer, kBufferSize);
+const char* char_pointer = range.GetArrayElement<char>(0, 0);
+EXPECT_EQ(reinterpret_cast<const char*>(kBufferPointer), char_pointer);
+const int* int_pointer = range.GetArrayElement<int>(0, 0);
+EXPECT_EQ(reinterpret_cast<const int*>(kBufferPointer), int_pointer);
+}

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comparison: toolkit/crashreporter/google-breakpad/src/common/memory_range_unittest.cc

toolkit/crashreporter/google-breakpad/src/common/memory_range_unittest.cc