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// Copyright (c) 2012 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.
//
// Main entry point for all unit tests.
#include "rlz_test_helpers.h"
#include <map>
#include <vector>
#include "base/strings/string16.h"
#include "rlz/lib/rlz_lib.h"
#include "testing/gtest/include/gtest/gtest.h"
#if defined(OS_WIN)
#include <shlwapi.h>
#include "base/win/registry.h"
#include "base/win/windows_version.h"
#elif defined(OS_POSIX)
#include "base/files/file_path.h"
#include "rlz/lib/rlz_value_store.h"
#endif
#if defined(OS_WIN)
namespace {
// Path to recursively copy into the replacemment hives. These are needed
// to make sure certain win32 APIs continue to run correctly once the real
// hives are replaced.
const wchar_t kHKLMAccessProviders[] =
L"System\\CurrentControlSet\\Control\\Lsa\\AccessProviders";
struct RegistryValue {
base::string16 name;
DWORD type;
std::vector<uint8> data;
};
struct RegistryKeyData {
std::vector<RegistryValue> values;
std::map<base::string16, RegistryKeyData> keys;
};
void ReadRegistryTree(const base::win::RegKey& src, RegistryKeyData* data) {
// First read values.
{
base::win::RegistryValueIterator i(src.Handle(), L"");
data->values.clear();
data->values.reserve(i.ValueCount());
for (; i.Valid(); ++i) {
RegistryValue& value = *data->values.insert(data->values.end(),
RegistryValue());
const uint8* data = reinterpret_cast<const uint8*>(i.Value());
value.name.assign(i.Name());
value.type = i.Type();
value.data.assign(data, data + i.ValueSize());
}
}
// Next read subkeys recursively.
for (base::win::RegistryKeyIterator i(src.Handle(), L"");
i.Valid(); ++i) {
ReadRegistryTree(base::win::RegKey(src.Handle(), i.Name(), KEY_READ),
&data->keys[base::string16(i.Name())]);
}
}
void WriteRegistryTree(const RegistryKeyData& data, base::win::RegKey* dest) {
// First write values.
for (size_t i = 0; i < data.values.size(); ++i) {
const RegistryValue& value = data.values[i];
dest->WriteValue(value.name.c_str(),
value.data.size() ? &value.data[0] : NULL,
static_cast<DWORD>(value.data.size()),
value.type);
}
// Next write values recursively.
for (std::map<base::string16, RegistryKeyData>::const_iterator iter =
data.keys.begin();
iter != data.keys.end(); ++iter) {
base::win::RegKey key(dest->Handle(), iter->first.c_str(), KEY_ALL_ACCESS);
WriteRegistryTree(iter->second, &key);
}
}
// Initialize temporary HKLM/HKCU registry hives used for testing.
// Testing RLZ requires reading and writing to the Windows registry. To keep
// the tests isolated from the machine's state, as well as to prevent the tests
// from causing side effects in the registry, HKCU and HKLM are overridden for
// the duration of the tests. RLZ tests don't expect the HKCU and KHLM hives to
// be empty though, and this function initializes the minimum value needed so
// that the test will run successfully.
void InitializeRegistryOverridesForTesting(
registry_util::RegistryOverrideManager* override_manager) {
// For the moment, the HKCU hive requires no initialization.
const bool do_copy = (base::win::GetVersion() >= base::win::VERSION_WIN7);
RegistryKeyData data;
if (do_copy) {
// Copy the following HKLM subtrees to the temporary location so that the
// win32 APIs used by the tests continue to work:
//
// HKLM\System\CurrentControlSet\Control\Lsa\AccessProviders
//
// This seems to be required since Win7.
ReadRegistryTree(base::win::RegKey(HKEY_LOCAL_MACHINE,
kHKLMAccessProviders,
KEY_READ), &data);
}
override_manager->OverrideRegistry(HKEY_LOCAL_MACHINE);
override_manager->OverrideRegistry(HKEY_CURRENT_USER);
if (do_copy) {
base::win::RegKey key(
HKEY_LOCAL_MACHINE, kHKLMAccessProviders, KEY_ALL_ACCESS);
WriteRegistryTree(data, &key);
}
}
} // namespace
#endif // defined(OS_WIN)
void RlzLibTestNoMachineState::SetUp() {
#if defined(OS_WIN)
InitializeRegistryOverridesForTesting(&override_manager_);
#elif defined(OS_MACOSX)
base::mac::ScopedNSAutoreleasePool pool;
#endif // defined(OS_WIN)
#if defined(OS_POSIX)
ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
rlz_lib::testing::SetRlzStoreDirectory(temp_dir_.path());
#endif // defined(OS_POSIX)
}
void RlzLibTestNoMachineState::TearDown() {
#if defined(OS_POSIX)
rlz_lib::testing::SetRlzStoreDirectory(base::FilePath());
#endif // defined(OS_POSIX)
}
void RlzLibTestBase::SetUp() {
RlzLibTestNoMachineState::SetUp();
#if defined(OS_WIN)
rlz_lib::CreateMachineState();
#endif // defined(OS_WIN)
}
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