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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <fstream>
#include "base/base_paths.h"
#include "base/bind.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/memory/scoped_ptr.h"
#include "base/test/scoped_path_override.h"
#include "chromecast/base/serializers.h"
#include "chromecast/crash/linux/dump_info.h"
#include "chromecast/crash/linux/minidump_generator.h"
#include "chromecast/crash/linux/minidump_writer.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace chromecast {
namespace {
const char kDumplogFile[] = "dumplog";
const char kLockfileName[] = "lockfile";
const char kMinidumpSubdir[] = "minidumps";
const char kDumpsKey[] = "dumps";
class FakeMinidumpGenerator : public MinidumpGenerator {
public:
FakeMinidumpGenerator() {}
~FakeMinidumpGenerator() override {}
// MinidumpGenerator implementation:
bool Generate(const std::string& minidump_path) override { return true; }
};
int FakeDumpState(const std::string& minidump_path) {
return 0;
}
scoped_ptr<DumpInfo> CreateDumpInfo(const std::string& json_string) {
scoped_ptr<base::Value> value(DeserializeFromJson(json_string));
return make_scoped_ptr(new DumpInfo(value.get()));
}
} // namespace
class MinidumpWriterTest : public testing::Test {
protected:
MinidumpWriterTest() {}
~MinidumpWriterTest() override {}
void SetUp() override {
// Set up a temporary directory which will be used as our fake home dir.
base::FilePath fake_home_dir;
ASSERT_TRUE(base::CreateNewTempDirectory("", &fake_home_dir));
home_.reset(new base::ScopedPathOverride(base::DIR_HOME, fake_home_dir));
minidump_dir_ = fake_home_dir.Append(kMinidumpSubdir);
dumplog_file_ = minidump_dir_.Append(kDumplogFile);
lockfile_path_ = minidump_dir_.Append(kLockfileName);
// Create the minidump directory and lockfile.
ASSERT_TRUE(base::CreateDirectory(minidump_dir_));
base::File lockfile(
lockfile_path_,
base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE);
ASSERT_TRUE(lockfile.IsValid());
}
int AppendLockFile(const DumpInfo& dump) {
scoped_ptr<base::Value> contents(DeserializeJsonFromFile(lockfile_path_));
if (!contents) {
base::DictionaryValue* dict = new base::DictionaryValue();
contents = make_scoped_ptr(dict);
dict->Set(kDumpsKey, make_scoped_ptr(new base::ListValue()));
}
base::DictionaryValue* dict;
base::ListValue* dump_list;
if (!contents || !contents->GetAsDictionary(&dict) ||
!dict->GetList(kDumpsKey, &dump_list) || !dump_list) {
return -1;
}
dump_list->Append(dump.GetAsValue());
return SerializeJsonToFile(lockfile_path_, *contents) ? 0 : -1;
}
FakeMinidumpGenerator fake_generator_;
base::FilePath minidump_dir_;
base::FilePath dumplog_file_;
base::FilePath lockfile_path_;
private:
scoped_ptr<base::ScopedPathOverride> home_;
DISALLOW_COPY_AND_ASSIGN(MinidumpWriterTest);
};
TEST_F(MinidumpWriterTest, Write_FailsWithIncorrectMinidumpPath) {
MinidumpWriter writer(&fake_generator_,
"/path/to/wrong/dir",
MinidumpParams(),
base::Bind(&FakeDumpState));
ASSERT_EQ(-1, writer.Write());
}
TEST_F(MinidumpWriterTest, Write_FailsWithMultiLevelRelativeMinidumpPath) {
MinidumpWriter writer(&fake_generator_,
"subdir/dumplog",
MinidumpParams(),
base::Bind(&FakeDumpState));
ASSERT_EQ(-1, writer.Write());
}
TEST_F(MinidumpWriterTest, Write_SucceedsWithSimpleFilename) {
MinidumpWriter writer(&fake_generator_,
"dumplog",
MinidumpParams(),
base::Bind(&FakeDumpState));
ASSERT_EQ(0, writer.Write());
}
TEST_F(MinidumpWriterTest, Write_SucceedsWithCorrectMinidumpPath) {
MinidumpWriter writer(&fake_generator_,
dumplog_file_.value(),
MinidumpParams(),
base::Bind(&FakeDumpState));
ASSERT_EQ(0, writer.Write());
}
TEST_F(MinidumpWriterTest, Write_FailsWithSubdirInCorrectPath) {
MinidumpWriter writer(&fake_generator_,
dumplog_file_.Append("subdir/logfile").value(),
MinidumpParams(),
base::Bind(&FakeDumpState));
ASSERT_EQ(-1, writer.Write());
}
TEST_F(MinidumpWriterTest, Write_FailsWhenTooManyDumpsPresent) {
MinidumpWriter writer(&fake_generator_,
dumplog_file_.value(),
MinidumpParams(),
base::Bind(&FakeDumpState));
// Write dump logs to the lockfile.
size_t too_many_dumps = writer.max_dumps() + 1;
for (size_t i = 0; i < too_many_dumps; ++i) {
scoped_ptr<DumpInfo> info(CreateDumpInfo(
"{"
"\"name\": \"p\","
"\"dump_time\" : \"2012-01-01 01:02:03\","
"\"dump\": \"dump_string\","
"\"uptime\": \"123456789\","
"\"logfile\": \"logfile.log\""
"}"));
ASSERT_TRUE(info->valid());
ASSERT_EQ(0, AppendLockFile(*info));
}
ASSERT_EQ(-1, writer.Write());
}
TEST_F(MinidumpWriterTest, Write_FailsWhenTooManyRecentDumpsPresent) {
MinidumpWriter writer(&fake_generator_,
dumplog_file_.value(),
MinidumpParams(),
base::Bind(&FakeDumpState));
// Write dump logs to the lockfile.
size_t too_many_recent_dumps = writer.max_recent_dumps() + 1;
for (size_t i = 0; i < too_many_recent_dumps; ++i) {
MinidumpParams params;
DumpInfo info("dump", "/dump/path", time(nullptr), params);
ASSERT_EQ(0, AppendLockFile(info));
}
ASSERT_EQ(-1, writer.Write());
}
TEST_F(MinidumpWriterTest, Write_SucceedsWhenDumpLimitsNotExceeded) {
MinidumpWriter writer(&fake_generator_,
dumplog_file_.value(),
MinidumpParams(),
base::Bind(&FakeDumpState));
ASSERT_GT(writer.max_dumps(), 1);
ASSERT_GT(writer.max_recent_dumps(), 0);
// Write an old dump logs to the lockfile.
scoped_ptr<DumpInfo> info(CreateDumpInfo(
"{"
"\"name\": \"p\","
"\"dump_time\" : \"2012-01-01 01:02:03\","
"\"dump\": \"dump_string\","
"\"uptime\": \"123456789\","
"\"logfile\": \"logfile.log\""
"}"));
ASSERT_TRUE(info->valid());
ASSERT_EQ(0, AppendLockFile(*info));
ASSERT_EQ(0, writer.Write());
}
} // namespace chromecast
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