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third_party/crashpad/crashpad/minidump/minidump_exception_writer_test.cc

Index: third_party/crashpad/crashpad/minidump/minidump_exception_writer_test.cc
diff --git a/third_party/crashpad/crashpad/minidump/minidump_exception_writer_test.cc b/third_party/crashpad/crashpad/minidump/minidump_exception_writer_test.cc
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+// 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_exception_writer.h"
+
+#include <windows.h>
+#include <dbghelp.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <string>
+#include <vector>
+
+#include "gtest/gtest.h"
+#include "minidump/minidump_context.h"
+#include "minidump/minidump_context_writer.h"
+#include "minidump/minidump_extensions.h"
+#include "minidump/minidump_file_writer.h"
+#include "minidump/minidump_thread_id_map.h"
+#include "minidump/test/minidump_context_test_util.h"
+#include "minidump/test/minidump_file_writer_test_util.h"
+#include "minidump/test/minidump_writable_test_util.h"
+#include "snapshot/test/test_cpu_context.h"
+#include "snapshot/test/test_exception_snapshot.h"
+#include "test/gtest_death_check.h"
+#include "util/file/string_file.h"
+#include "util/stdlib/move.h"
+
+namespace crashpad {
+namespace test {
+namespace {
+
+// This returns the MINIDUMP_EXCEPTION_STREAM stream in |exception_stream|.
+void GetExceptionStream(const std::string& file_contents,
+                        const MINIDUMP_EXCEPTION_STREAM** exception_stream) {
+  const size_t kDirectoryOffset = sizeof(MINIDUMP_HEADER);
+  const size_t kExceptionStreamOffset =
+      kDirectoryOffset + sizeof(MINIDUMP_DIRECTORY);
+  const size_t kContextOffset =
+      kExceptionStreamOffset + sizeof(MINIDUMP_EXCEPTION_STREAM);
+  const size_t kFileSize = kContextOffset + sizeof(MinidumpContextX86);
+  ASSERT_EQ(file_contents.size(), kFileSize);
+
+  const MINIDUMP_DIRECTORY* directory;
+  const MINIDUMP_HEADER* header =
+      MinidumpHeaderAtStart(file_contents, &directory);
+  ASSERT_NO_FATAL_FAILURE(VerifyMinidumpHeader(header, 1, 0));
+
+  ASSERT_EQ(kMinidumpStreamTypeException, directory[0].StreamType);
+  EXPECT_EQ(kExceptionStreamOffset, directory[0].Location.Rva);
+
+  *exception_stream =
+      MinidumpWritableAtLocationDescriptor<MINIDUMP_EXCEPTION_STREAM>(
+          file_contents, directory[0].Location);
+  ASSERT_TRUE(exception_stream);
+}
+
+// The MINIDUMP_EXCEPTION_STREAMs |expected| and |observed| are compared against
+// each other using gtest assertions. The context will be recovered from
+// |file_contents| and stored in |context|.
+void ExpectExceptionStream(const MINIDUMP_EXCEPTION_STREAM* expected,
+                           const MINIDUMP_EXCEPTION_STREAM* observed,
+                           const std::string& file_contents,
+                           const MinidumpContextX86** context) {
+  EXPECT_EQ(expected->ThreadId, observed->ThreadId);
+  EXPECT_EQ(0u, observed->__alignment);
+  EXPECT_EQ(expected->ExceptionRecord.ExceptionCode,
+            observed->ExceptionRecord.ExceptionCode);
+  EXPECT_EQ(expected->ExceptionRecord.ExceptionFlags,
+            observed->ExceptionRecord.ExceptionFlags);
+  EXPECT_EQ(expected->ExceptionRecord.ExceptionRecord,
+            observed->ExceptionRecord.ExceptionRecord);
+  EXPECT_EQ(expected->ExceptionRecord.ExceptionAddress,
+            observed->ExceptionRecord.ExceptionAddress);
+  EXPECT_EQ(expected->ExceptionRecord.NumberParameters,
+            observed->ExceptionRecord.NumberParameters);
+  EXPECT_EQ(0u, observed->ExceptionRecord.__unusedAlignment);
+  for (size_t index = 0;
+       index < arraysize(observed->ExceptionRecord.ExceptionInformation);
+       ++index) {
+    EXPECT_EQ(expected->ExceptionRecord.ExceptionInformation[index],
+              observed->ExceptionRecord.ExceptionInformation[index]);
+  }
+  *context = MinidumpWritableAtLocationDescriptor<MinidumpContextX86>(
+      file_contents, observed->ThreadContext);
+  ASSERT_TRUE(context);
+}
+
+TEST(MinidumpExceptionWriter, Minimal) {
+  MinidumpFileWriter minidump_file_writer;
+  auto exception_writer = make_scoped_ptr(new MinidumpExceptionWriter());
+
+  const uint32_t kSeed = 100;
+
+  auto context_x86_writer = make_scoped_ptr(new MinidumpContextX86Writer());
+  InitializeMinidumpContextX86(context_x86_writer->context(), kSeed);
+  exception_writer->SetContext(crashpad::move(context_x86_writer));
+
+  minidump_file_writer.AddStream(crashpad::move(exception_writer));
+
+  StringFile string_file;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&string_file));
+
+  const MINIDUMP_EXCEPTION_STREAM* observed_exception_stream = nullptr;
+  ASSERT_NO_FATAL_FAILURE(
+      GetExceptionStream(string_file.string(), &observed_exception_stream));
+
+  MINIDUMP_EXCEPTION_STREAM expected_exception_stream = {};
+  expected_exception_stream.ThreadContext.DataSize = sizeof(MinidumpContextX86);
+
+  const MinidumpContextX86* observed_context = nullptr;
+  ASSERT_NO_FATAL_FAILURE(ExpectExceptionStream(&expected_exception_stream,
+                                                observed_exception_stream,
+                                                string_file.string(),
+                                                &observed_context));
+
+  ASSERT_NO_FATAL_FAILURE(
+      ExpectMinidumpContextX86(kSeed, observed_context, false));
+}
+
+TEST(MinidumpExceptionWriter, Standard) {
+  MinidumpFileWriter minidump_file_writer;
+  auto exception_writer = make_scoped_ptr(new MinidumpExceptionWriter());
+
+  const uint32_t kSeed = 200;
+  const uint32_t kThreadID = 1;
+  const uint32_t kExceptionCode = 2;
+  const uint32_t kExceptionFlags = 3;
+  const uint32_t kExceptionRecord = 4;
+  const uint32_t kExceptionAddress = 5;
+  const uint64_t kExceptionInformation0 = 6;
+  const uint64_t kExceptionInformation1 = 7;
+  const uint64_t kExceptionInformation2 = 7;
+
+  auto context_x86_writer = make_scoped_ptr(new MinidumpContextX86Writer());
+  InitializeMinidumpContextX86(context_x86_writer->context(), kSeed);
+  exception_writer->SetContext(crashpad::move(context_x86_writer));
+
+  exception_writer->SetThreadID(kThreadID);
+  exception_writer->SetExceptionCode(kExceptionCode);
+  exception_writer->SetExceptionFlags(kExceptionFlags);
+  exception_writer->SetExceptionRecord(kExceptionRecord);
+  exception_writer->SetExceptionAddress(kExceptionAddress);
+
+  // Set a lot of exception information at first, and then replace it with less.
+  // This tests that the exception that is written does not contain the
+  // “garbage” from the initial SetExceptionInformation() call.
+  std::vector<uint64_t> exception_information(EXCEPTION_MAXIMUM_PARAMETERS,
+                                              0x5a5a5a5a5a5a5a5a);
+  exception_writer->SetExceptionInformation(exception_information);
+
+  exception_information.clear();
+  exception_information.push_back(kExceptionInformation0);
+  exception_information.push_back(kExceptionInformation1);
+  exception_information.push_back(kExceptionInformation2);
+  exception_writer->SetExceptionInformation(exception_information);
+
+  minidump_file_writer.AddStream(crashpad::move(exception_writer));
+
+  StringFile string_file;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&string_file));
+
+  const MINIDUMP_EXCEPTION_STREAM* observed_exception_stream = nullptr;
+  ASSERT_NO_FATAL_FAILURE(
+      GetExceptionStream(string_file.string(), &observed_exception_stream));
+
+  MINIDUMP_EXCEPTION_STREAM expected_exception_stream = {};
+  expected_exception_stream.ThreadId = kThreadID;
+  expected_exception_stream.ExceptionRecord.ExceptionCode = kExceptionCode;
+  expected_exception_stream.ExceptionRecord.ExceptionFlags = kExceptionFlags;
+  expected_exception_stream.ExceptionRecord.ExceptionRecord = kExceptionRecord;
+  expected_exception_stream.ExceptionRecord.ExceptionAddress =
+      kExceptionAddress;
+  expected_exception_stream.ExceptionRecord.NumberParameters =
+      static_cast<uint32_t>(exception_information.size());
+  for (size_t index = 0; index < exception_information.size(); ++index) {
+    expected_exception_stream.ExceptionRecord.ExceptionInformation[index] =
+        exception_information[index];
+  }
+  expected_exception_stream.ThreadContext.DataSize = sizeof(MinidumpContextX86);
+
+  const MinidumpContextX86* observed_context = nullptr;
+  ASSERT_NO_FATAL_FAILURE(ExpectExceptionStream(&expected_exception_stream,
+                                                observed_exception_stream,
+                                                string_file.string(),
+                                                &observed_context));
+
+  ASSERT_NO_FATAL_FAILURE(
+      ExpectMinidumpContextX86(kSeed, observed_context, false));
+}
+
+TEST(MinidumpExceptionWriter, InitializeFromSnapshot) {
+  std::vector<uint64_t> exception_codes;
+  exception_codes.push_back(0x1000000000000000);
+  exception_codes.push_back(0x5555555555555555);
+
+  MINIDUMP_EXCEPTION_STREAM expect_exception = {};
+
+  expect_exception.ThreadId = 123;
+  expect_exception.ExceptionRecord.ExceptionCode = 100;
+  expect_exception.ExceptionRecord.ExceptionFlags = 1;
+  expect_exception.ExceptionRecord.ExceptionAddress = 0xfedcba9876543210;
+  expect_exception.ExceptionRecord.NumberParameters =
+      static_cast<uint32_t>(exception_codes.size());
+  for (size_t index = 0; index < exception_codes.size(); ++index) {
+    expect_exception.ExceptionRecord.ExceptionInformation[index] =
+        exception_codes[index];
+  }
+  const uint64_t kThreadID = 0xaaaaaaaaaaaaaaaa;
+  const uint32_t kSeed = 65;
+
+  TestExceptionSnapshot exception_snapshot;
+  exception_snapshot.SetThreadID(kThreadID);
+  exception_snapshot.SetException(
+      expect_exception.ExceptionRecord.ExceptionCode);
+  exception_snapshot.SetExceptionInfo(
+      expect_exception.ExceptionRecord.ExceptionFlags);
+  exception_snapshot.SetExceptionAddress(
+      expect_exception.ExceptionRecord.ExceptionAddress);
+  exception_snapshot.SetCodes(exception_codes);
+
+  InitializeCPUContextX86(exception_snapshot.MutableContext(), kSeed);
+
+  MinidumpThreadIDMap thread_id_map;
+  thread_id_map[kThreadID] = expect_exception.ThreadId;
+
+  auto exception_writer = make_scoped_ptr(new MinidumpExceptionWriter());
+  exception_writer->InitializeFromSnapshot(&exception_snapshot, thread_id_map);
+
+  MinidumpFileWriter minidump_file_writer;
+  minidump_file_writer.AddStream(crashpad::move(exception_writer));
+
+  StringFile string_file;
+  ASSERT_TRUE(minidump_file_writer.WriteEverything(&string_file));
+
+  const MINIDUMP_EXCEPTION_STREAM* exception = nullptr;
+  ASSERT_NO_FATAL_FAILURE(GetExceptionStream(string_file.string(), &exception));
+
+  const MinidumpContextX86* observed_context = nullptr;
+  ASSERT_NO_FATAL_FAILURE(ExpectExceptionStream(&expect_exception,
+                                                exception,
+                                                string_file.string(),
+                                                &observed_context));
+
+  ASSERT_NO_FATAL_FAILURE(
+      ExpectMinidumpContextX86(kSeed, observed_context, true));
+}
+
+TEST(MinidumpExceptionWriterDeathTest, NoContext) {
+  MinidumpFileWriter minidump_file_writer;
+  auto exception_writer = make_scoped_ptr(new MinidumpExceptionWriter());
+
+  minidump_file_writer.AddStream(crashpad::move(exception_writer));
+
+  StringFile string_file;
+  ASSERT_DEATH_CHECK(minidump_file_writer.WriteEverything(&string_file),
+                     "context_");
+}
+
+TEST(MinidumpExceptionWriterDeathTest, TooMuchInformation) {
+  MinidumpExceptionWriter exception_writer;
+  std::vector<uint64_t> exception_information(EXCEPTION_MAXIMUM_PARAMETERS + 1,
+                                              0x5a5a5a5a5a5a5a5a);
+  ASSERT_DEATH_CHECK(
+      exception_writer.SetExceptionInformation(exception_information),
+      "kMaxParameters");
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace crashpad