Add MinidumpMiscInfoWriter and its test

minidump/minidump_misc_info_writer_test.cc

+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "minidump/minidump_misc_info_writer.h"
+
+#include <dbghelp.h>
+#include <string.h>
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/strings/string16.h"
+#include "base/strings/utf_string_conversions.h"
+#include "gtest/gtest.h"
+#include "minidump/minidump_file_writer.h"
+#include "util/file/string_file_writer.h"
+#include "util/stdlib/strlcpy.h"
+
+namespace {
+
+using namespace crashpad;
+
+template <typename T>
+void GetMiscInfoStream(const std::string& file_contents, const T** misc_info) {
+  const size_t kDirectoryOffset = sizeof(MINIDUMP_HEADER);
+  const size_t kMiscInfoStreamOffset =
+      kDirectoryOffset + sizeof(MINIDUMP_DIRECTORY);
+  const size_t kMiscInfoStreamSize = sizeof(T);
+  const size_t kFileSize = kMiscInfoStreamOffset + kMiscInfoStreamSize;
+
+  ASSERT_EQ(kFileSize, file_contents.size());
+
+  const MINIDUMP_HEADER* header =
+      reinterpret_cast<const MINIDUMP_HEADER*>(&file_contents[0]);
+
+  EXPECT_EQ(static_cast<uint32_t>(MINIDUMP_SIGNATURE), header->Signature);
+  EXPECT_EQ(static_cast<uint32_t>(MINIDUMP_VERSION), header->Version);
+  ASSERT_EQ(1u, header->NumberOfStreams);
+  ASSERT_EQ(kDirectoryOffset, header->StreamDirectoryRva);
+  EXPECT_EQ(0u, header->CheckSum);
+  EXPECT_EQ(0u, header->TimeDateStamp);
+  EXPECT_EQ(MiniDumpNormal, header->Flags);
+
+  const MINIDUMP_DIRECTORY* directory =
+      reinterpret_cast<const MINIDUMP_DIRECTORY*>(
+          &file_contents[kDirectoryOffset]);
+
+  ASSERT_EQ(kMinidumpStreamTypeMiscInfo, directory->StreamType);
+  ASSERT_EQ(kMiscInfoStreamSize, directory->Location.DataSize);
+  ASSERT_EQ(kMiscInfoStreamOffset, directory->Location.Rva);
+
+  *misc_info =
+      reinterpret_cast<const T*>(&file_contents[kMiscInfoStreamOffset]);
+
+  ASSERT_EQ(kMiscInfoStreamSize, (*misc_info)->SizeOfInfo);
+}
+
+void ExpectNULPaddedString16Equal(const char16* expected,
+                                  const char16* observed,
+                                  size_t size) {
+  string16 expected_string(expected, size);
+  string16 observed_string(observed, size);
+  EXPECT_EQ(expected_string, observed_string);
+}
+
+void ExpectSystemTimeEqual(const SYSTEMTIME* expected,
+                           const SYSTEMTIME* observed) {
+  EXPECT_EQ(expected->wYear, observed->wYear);
+  EXPECT_EQ(expected->wMonth, observed->wMonth);
+  EXPECT_EQ(expected->wDayOfWeek, observed->wDayOfWeek);
+  EXPECT_EQ(expected->wDay, observed->wDay);
+  EXPECT_EQ(expected->wHour, observed->wHour);
+  EXPECT_EQ(expected->wMinute, observed->wMinute);
+  EXPECT_EQ(expected->wSecond, observed->wSecond);
+  EXPECT_EQ(expected->wMilliseconds, observed->wMilliseconds);
+}
+
+template <typename T>
+void ExpectMiscInfoEqual(const T* expected, const T* observed);
+
+template <>
+void ExpectMiscInfoEqual<MINIDUMP_MISC_INFO>(
+    const MINIDUMP_MISC_INFO* expected,
+    const MINIDUMP_MISC_INFO* observed) {
+  EXPECT_EQ(expected->Flags1, observed->Flags1);
+  EXPECT_EQ(expected->ProcessId, observed->ProcessId);
+  EXPECT_EQ(expected->ProcessCreateTime, observed->ProcessCreateTime);
+  EXPECT_EQ(expected->ProcessUserTime, observed->ProcessUserTime);
+  EXPECT_EQ(expected->ProcessKernelTime, observed->ProcessKernelTime);
+}
+
+template <>
+void ExpectMiscInfoEqual<MINIDUMP_MISC_INFO_2>(
+    const MINIDUMP_MISC_INFO_2* expected,
+    const MINIDUMP_MISC_INFO_2* observed) {
+  ExpectMiscInfoEqual<MINIDUMP_MISC_INFO>(expected, observed);
+  EXPECT_EQ(expected->ProcessorMaxMhz, observed->ProcessorMaxMhz);
+  EXPECT_EQ(expected->ProcessorCurrentMhz, observed->ProcessorCurrentMhz);
+  EXPECT_EQ(expected->ProcessorMhzLimit, observed->ProcessorMhzLimit);
+  EXPECT_EQ(expected->ProcessorMaxIdleState, observed->ProcessorMaxIdleState);
+  EXPECT_EQ(expected->ProcessorCurrentIdleState,
+            observed->ProcessorCurrentIdleState);
+}
+
+template <>
+void ExpectMiscInfoEqual<MINIDUMP_MISC_INFO_3>(
+    const MINIDUMP_MISC_INFO_3* expected,
+    const MINIDUMP_MISC_INFO_3* observed) {
+  ExpectMiscInfoEqual<MINIDUMP_MISC_INFO_2>(expected, observed);
+  EXPECT_EQ(expected->ProcessIntegrityLevel, observed->ProcessIntegrityLevel);
+  EXPECT_EQ(expected->ProcessExecuteFlags, observed->ProcessExecuteFlags);
+  EXPECT_EQ(expected->ProtectedProcess, observed->ProtectedProcess);
+  EXPECT_EQ(expected->TimeZoneId, observed->TimeZoneId);
+  EXPECT_EQ(expected->TimeZone.Bias, observed->TimeZone.Bias);
+  {
+    SCOPED_TRACE("Standard");
+    ExpectNULPaddedString16Equal(expected->TimeZone.StandardName,
+                                 observed->TimeZone.StandardName,
+                                 arraysize(expected->TimeZone.StandardName));
+    ExpectSystemTimeEqual(&expected->TimeZone.StandardDate,
+                          &observed->TimeZone.StandardDate);
+    EXPECT_EQ(expected->TimeZone.StandardBias, observed->TimeZone.StandardBias);
+  }
+  {
+    SCOPED_TRACE("Daylight");
+    ExpectNULPaddedString16Equal(expected->TimeZone.DaylightName,
+                                 observed->TimeZone.DaylightName,
+                                 arraysize(expected->TimeZone.DaylightName));
+    ExpectSystemTimeEqual(&expected->TimeZone.DaylightDate,
+                          &observed->TimeZone.DaylightDate);
+    EXPECT_EQ(expected->TimeZone.DaylightBias, observed->TimeZone.DaylightBias);
+  }
+}
+
+template <>
+void ExpectMiscInfoEqual<MINIDUMP_MISC_INFO_4>(
+    const MINIDUMP_MISC_INFO_4* expected,
+    const MINIDUMP_MISC_INFO_4* observed) {
+  ExpectMiscInfoEqual<MINIDUMP_MISC_INFO_3>(expected, observed);
+  {
+    SCOPED_TRACE("BuildString");
+    ExpectNULPaddedString16Equal(expected->BuildString,
+                                 observed->BuildString,
+                                 arraysize(expected->BuildString));
+  }
+  {
+    SCOPED_TRACE("DbgBldStr");
+    ExpectNULPaddedString16Equal(expected->DbgBldStr,
+                                 observed->DbgBldStr,
+                                 arraysize(expected->DbgBldStr));
+  }
+}
+
+TEST(MinidumpMiscInfoWriter, Empty) {
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO expected = {};
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+TEST(MinidumpMiscInfoWriter, ProcessId) {
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  const uint32_t kProcessId = 12345;
+
+  misc_info_writer.SetProcessId(kProcessId);
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO expected = {};
+  expected.Flags1 = MINIDUMP_MISC1_PROCESS_ID;
+  expected.ProcessId = kProcessId;
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+TEST(MinidumpMiscInfoWriter, ProcessTimes) {
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  const time_t kProcessCreateTime = 0x15252f00;
+  const uint32_t kProcessUserTime = 10;
+  const uint32_t kProcessKernelTime = 5;
+
+  misc_info_writer.SetProcessTimes(
+      kProcessCreateTime, kProcessUserTime, kProcessKernelTime);
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO expected = {};
+  expected.Flags1 = MINIDUMP_MISC1_PROCESS_TIMES;
+  expected.ProcessCreateTime = kProcessCreateTime;
+  expected.ProcessUserTime = kProcessUserTime;
+  expected.ProcessKernelTime = kProcessKernelTime;
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+TEST(MinidumpMiscInfoWriter, ProcessorPowerInfo) {
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  const uint32_t kProcessorMaxMhz = 2800;
+  const uint32_t kProcessorCurrentMhz = 2300;
+  const uint32_t kProcessorMhzLimit = 3300;
+  const uint32_t kProcessorMaxIdleState = 5;
+  const uint32_t kProcessorCurrentIdleState = 1;
+
+  misc_info_writer.SetProcessorPowerInfo(kProcessorMaxMhz,
+                                         kProcessorCurrentMhz,
+                                         kProcessorMhzLimit,
+                                         kProcessorMaxIdleState,
+                                         kProcessorCurrentIdleState);
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO_2* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO_2 expected = {};
+  expected.Flags1 = MINIDUMP_MISC1_PROCESSOR_POWER_INFO;
+  expected.ProcessorMaxMhz = kProcessorMaxMhz;
+  expected.ProcessorCurrentMhz = kProcessorCurrentMhz;
+  expected.ProcessorMhzLimit = kProcessorMhzLimit;
+  expected.ProcessorMaxIdleState = kProcessorMaxIdleState;
+  expected.ProcessorCurrentIdleState = kProcessorCurrentIdleState;
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+TEST(MinidumpMiscInfoWriter, ProcessIntegrityLevel) {
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  const uint32_t kProcessIntegrityLevel = 0x2000;
+
+  misc_info_writer.SetProcessIntegrityLevel(kProcessIntegrityLevel);
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO_3* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO_3 expected = {};
+  expected.Flags1 = MINIDUMP_MISC3_PROCESS_INTEGRITY;
+  expected.ProcessIntegrityLevel = kProcessIntegrityLevel;
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+TEST(MinidumpMiscInfoWriter, ProcessExecuteFlags) {
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  const uint32_t kProcessExecuteFlags = 0x13579bdf;
+
+  misc_info_writer.SetProcessExecuteFlags(kProcessExecuteFlags);
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO_3* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO_3 expected = {};
+  expected.Flags1 = MINIDUMP_MISC3_PROCESS_EXECUTE_FLAGS;
+  expected.ProcessExecuteFlags = kProcessExecuteFlags;
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+TEST(MinidumpMiscInfoWriter, ProtectedProcess) {
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  const uint32_t kProtectedProcess = 1;
+
+  misc_info_writer.SetProtectedProcess(kProtectedProcess);
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO_3* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO_3 expected = {};
+  expected.Flags1 = MINIDUMP_MISC3_PROTECTED_PROCESS;
+  expected.ProtectedProcess = kProtectedProcess;
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+TEST(MinidumpMiscInfoWriter, TimeZone) {
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  const uint32_t kTimeZoneId = 2;
+  const int32_t kBias = 300;
+  const char kStandardName[] = "EST";
+  const SYSTEMTIME kStandardDate = {0, 11, 1, 0, 2, 0, 0, 0};
+  const int32_t kStandardBias = 0;
+  const char kDaylightName[] = "EDT";
+  const SYSTEMTIME kDaylightDate = {0, 3, 2, 0, 2, 0, 0, 0};
+  const int32_t kDaylightBias = -60;
+
+  misc_info_writer.SetTimeZone(kTimeZoneId,
+                               kBias,
+                               kStandardName,
+                               kStandardDate,
+                               kStandardBias,
+                               kDaylightName,
+                               kDaylightDate,
+                               kDaylightBias);
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO_3* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO_3 expected = {};
+  expected.Flags1 = MINIDUMP_MISC3_TIMEZONE;
+  expected.TimeZoneId = kTimeZoneId;
+  expected.TimeZone.Bias = kBias;
+  string16 standard_name_utf16 = base::UTF8ToUTF16(kStandardName);
+  c16lcpy(expected.TimeZone.StandardName,
+          standard_name_utf16.c_str(),
+          arraysize(expected.TimeZone.StandardName));
+  memcpy(&expected.TimeZone.StandardDate,
+         &kStandardDate,
+         sizeof(expected.TimeZone.StandardDate));
+  expected.TimeZone.StandardBias = kStandardBias;
+  string16 daylight_name_utf16 = base::UTF8ToUTF16(kDaylightName);
+  c16lcpy(expected.TimeZone.DaylightName,
+          daylight_name_utf16.c_str(),
+          arraysize(expected.TimeZone.DaylightName));
+  memcpy(&expected.TimeZone.DaylightDate,
+         &kDaylightDate,
+         sizeof(expected.TimeZone.DaylightDate));
+  expected.TimeZone.DaylightBias = kDaylightBias;
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+TEST(MinidumpMiscInfoWriter, TimeZoneStringsOverflow) {
+  // This test makes sure that the time zone name strings are truncated properly
+  // to the widths of their fields.
+
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  const uint32_t kTimeZoneId = 2;
+  const int32_t kBias = 300;
+  std::string standard_name(
+      arraysize(decltype(MINIDUMP_MISC_INFO_N::TimeZone)::StandardName) + 1,
+      's');
+  const int32_t kStandardBias = 0;
+  std::string daylight_name(
+      arraysize(decltype(MINIDUMP_MISC_INFO_N::TimeZone)::DaylightName), 'd');
+  const int32_t kDaylightBias = -60;
+
+  // Test using kSystemTimeZero, because not all platforms will be able to
+  // provide daylight saving time transition times.
+  const SYSTEMTIME kSystemTimeZero = {};
+
+  misc_info_writer.SetTimeZone(kTimeZoneId,
+                               kBias,
+                               standard_name,
+                               kSystemTimeZero,
+                               kStandardBias,
+                               daylight_name,
+                               kSystemTimeZero,
+                               kDaylightBias);
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO_3* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO_3 expected = {};
+  expected.Flags1 = MINIDUMP_MISC3_TIMEZONE;
+  expected.TimeZoneId = kTimeZoneId;
+  expected.TimeZone.Bias = kBias;
+  string16 standard_name_utf16 = base::UTF8ToUTF16(standard_name);
+  c16lcpy(expected.TimeZone.StandardName,
+          standard_name_utf16.c_str(),
+          arraysize(expected.TimeZone.StandardName));
+  memcpy(&expected.TimeZone.StandardDate,
+         &kSystemTimeZero,
+         sizeof(expected.TimeZone.StandardDate));
+  expected.TimeZone.StandardBias = kStandardBias;
+  string16 daylight_name_utf16 = base::UTF8ToUTF16(daylight_name);
+  c16lcpy(expected.TimeZone.DaylightName,
+          daylight_name_utf16.c_str(),
+          arraysize(expected.TimeZone.DaylightName));
+  memcpy(&expected.TimeZone.DaylightDate,
+         &kSystemTimeZero,
+         sizeof(expected.TimeZone.DaylightDate));
+  expected.TimeZone.DaylightBias = kDaylightBias;
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+TEST(MinidumpMiscInfoWriter, BuildStrings) {
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  const char kBuildString[] = "build string";
+  const char kDebugBuildString[] = "debug build string";
+
+  misc_info_writer.SetBuildString(kBuildString, kDebugBuildString);
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO_4* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO_4 expected = {};
+  expected.Flags1 = MINIDUMP_MISC4_BUILDSTRING;
+  string16 build_string_utf16 = base::UTF8ToUTF16(kBuildString);
+  c16lcpy(expected.BuildString,
+          build_string_utf16.c_str(),
+          arraysize(expected.BuildString));
+  string16 debug_build_string_utf16 = base::UTF8ToUTF16(kDebugBuildString);
+  c16lcpy(expected.DbgBldStr,
+          debug_build_string_utf16.c_str(),
+          arraysize(expected.DbgBldStr));
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+TEST(MinidumpMiscInfoWriter, BuildStringsOverflow) {
+  // This test makes sure that the build strings are truncated properly to the
+  // widths of their fields.
+
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  std::string build_string(arraysize(MINIDUMP_MISC_INFO_N::BuildString) + 1,
+                           'B');
+  std::string debug_build_string(arraysize(MINIDUMP_MISC_INFO_N::DbgBldStr),
+                                 'D');
+
+  misc_info_writer.SetBuildString(build_string, debug_build_string);
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO_4* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO_4 expected = {};
+  expected.Flags1 = MINIDUMP_MISC4_BUILDSTRING;
+  string16 build_string_utf16 = base::UTF8ToUTF16(build_string);
+  c16lcpy(expected.BuildString,
+          build_string_utf16.c_str(),
+          arraysize(expected.BuildString));
+  string16 debug_build_string_utf16 = base::UTF8ToUTF16(debug_build_string);
+  c16lcpy(expected.DbgBldStr,
+          debug_build_string_utf16.c_str(),
+          arraysize(expected.DbgBldStr));
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+TEST(MinidumpMiscInfoWriter, Everything) {
+  MinidumpFileWriter minidump_file_writer;
+  MinidumpMiscInfoWriter misc_info_writer;
+
+  const uint32_t kProcessId = 12345;
+  const time_t kProcessCreateTime = 0x15252f00;
+  const uint32_t kProcessUserTime = 10;
+  const uint32_t kProcessKernelTime = 5;
+  const uint32_t kProcessorMaxMhz = 2800;
+  const uint32_t kProcessorCurrentMhz = 2300;
+  const uint32_t kProcessorMhzLimit = 3300;
+  const uint32_t kProcessorMaxIdleState = 5;
+  const uint32_t kProcessorCurrentIdleState = 1;
+  const uint32_t kProcessIntegrityLevel = 0x2000;
+  const uint32_t kProcessExecuteFlags = 0x13579bdf;
+  const uint32_t kProtectedProcess = 1;
+  const uint32_t kTimeZoneId = 2;
+  const int32_t kBias = 300;
+  const char kStandardName[] = "EST";
+  const int32_t kStandardBias = 0;
+  const char kDaylightName[] = "EDT";
+  const int32_t kDaylightBias = -60;
+  const SYSTEMTIME kSystemTimeZero = {};
+  const char kBuildString[] = "build string";
+  const char kDebugBuildString[] = "debug build string";
+
+  misc_info_writer.SetProcessId(kProcessId);
+  misc_info_writer.SetProcessTimes(
+      kProcessCreateTime, kProcessUserTime, kProcessKernelTime);
+  misc_info_writer.SetProcessorPowerInfo(kProcessorMaxMhz,
+                                         kProcessorCurrentMhz,
+                                         kProcessorMhzLimit,
+                                         kProcessorMaxIdleState,
+                                         kProcessorCurrentIdleState);
+  misc_info_writer.SetProcessIntegrityLevel(kProcessIntegrityLevel);
+  misc_info_writer.SetProcessExecuteFlags(kProcessExecuteFlags);
+  misc_info_writer.SetProtectedProcess(kProtectedProcess);
+  misc_info_writer.SetTimeZone(kTimeZoneId,
+                               kBias,
+                               kStandardName,
+                               kSystemTimeZero,
+                               kStandardBias,
+                               kDaylightName,
+                               kSystemTimeZero,
+                               kDaylightBias);
+  misc_info_writer.SetBuildString(kBuildString, kDebugBuildString);
+
+  minidump_file_writer.AddStream(&misc_info_writer);
+
+  StringFileWriter file_writer;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&file_writer));
+
+  const MINIDUMP_MISC_INFO_4* observed;
+  GetMiscInfoStream(file_writer.string(), &observed);
+  if (Test::HasFatalFailure()) {
+    return;
+  }
+
+  MINIDUMP_MISC_INFO_4 expected = {};
+  expected.Flags1 =
+      MINIDUMP_MISC1_PROCESS_ID | MINIDUMP_MISC1_PROCESS_TIMES |
+      MINIDUMP_MISC1_PROCESSOR_POWER_INFO | MINIDUMP_MISC3_PROCESS_INTEGRITY |
+      MINIDUMP_MISC3_PROCESS_EXECUTE_FLAGS | MINIDUMP_MISC3_PROTECTED_PROCESS |
+      MINIDUMP_MISC3_TIMEZONE | MINIDUMP_MISC4_BUILDSTRING;
+  expected.ProcessId = kProcessId;
+  expected.ProcessCreateTime = kProcessCreateTime;
+  expected.ProcessUserTime = kProcessUserTime;
+  expected.ProcessKernelTime = kProcessKernelTime;
+  expected.ProcessorMaxMhz = kProcessorMaxMhz;
+  expected.ProcessorCurrentMhz = kProcessorCurrentMhz;
+  expected.ProcessorMhzLimit = kProcessorMhzLimit;
+  expected.ProcessorMaxIdleState = kProcessorMaxIdleState;
+  expected.ProcessorCurrentIdleState = kProcessorCurrentIdleState;
+  expected.ProcessIntegrityLevel = kProcessIntegrityLevel;
+  expected.ProcessExecuteFlags = kProcessExecuteFlags;
+  expected.ProtectedProcess = kProtectedProcess;
+  expected.TimeZoneId = kTimeZoneId;
+  expected.TimeZone.Bias = kBias;
+  string16 standard_name_utf16 = base::UTF8ToUTF16(kStandardName);
+  c16lcpy(expected.TimeZone.StandardName,
+          standard_name_utf16.c_str(),
+          arraysize(expected.TimeZone.StandardName));
+  memcpy(&expected.TimeZone.StandardDate,
+         &kSystemTimeZero,
+         sizeof(expected.TimeZone.StandardDate));
+  expected.TimeZone.StandardBias = kStandardBias;
+  string16 daylight_name_utf16 = base::UTF8ToUTF16(kDaylightName);
+  c16lcpy(expected.TimeZone.DaylightName,
+          daylight_name_utf16.c_str(),
+          arraysize(expected.TimeZone.DaylightName));
+  memcpy(&expected.TimeZone.DaylightDate,
+         &kSystemTimeZero,
+         sizeof(expected.TimeZone.DaylightDate));
+  expected.TimeZone.DaylightBias = kDaylightBias;
+  string16 build_string_utf16 = base::UTF8ToUTF16(kBuildString);
+  c16lcpy(expected.BuildString,
+          build_string_utf16.c_str(),
+          arraysize(expected.BuildString));
+  string16 debug_build_string_utf16 = base::UTF8ToUTF16(kDebugBuildString);
+  c16lcpy(expected.DbgBldStr,
+          debug_build_string_utf16.c_str(),
+          arraysize(expected.DbgBldStr));
+
+  ExpectMiscInfoEqual(&expected, observed);
+}
+
+}  // namespace