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Unified Diff: chrome_elf/nt_registry/nt_registry_unittest.cc

Issue 2408923002: [M54 Merge] NTRegistry - added wow64 redirection support. (Closed)
Patch Set: Created 4 years, 2 months ago
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Index: chrome_elf/nt_registry/nt_registry_unittest.cc
diff --git a/chrome_elf/nt_registry/nt_registry_unittest.cc b/chrome_elf/nt_registry/nt_registry_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d2020429fadbc20d9da8ee412c54612e3bc15766
--- /dev/null
+++ b/chrome_elf/nt_registry/nt_registry_unittest.cc
@@ -0,0 +1,465 @@
+// Copyright 2016 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 "chrome_elf/nt_registry/nt_registry.h"
+
+#include <windows.h>
+#include <rpc.h>
+#include <stddef.h>
+
+#include "base/test/test_reg_util_win.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+//------------------------------------------------------------------------------
+// WOW64 redirection tests
+//
+// - Only HKCU will be tested on the auto (try) bots.
+// HKLM will be kept separate (and manual) for local testing only.
+//
+// NOTE: Currently no real WOW64 context testing, as building x86 projects
+// during x64 builds is not currently supported for performance reasons.
+// https://cs.chromium.org/chromium/src/build/toolchain/win/BUILD.gn?sq%3Dpackage:chromium&l=314
+//------------------------------------------------------------------------------
+
+// Utility function for the WOW64 redirection test suites.
+// Note: Testing redirection through ADVAPI32 here as well, to get notice if
+// expected behaviour changes!
+// If |redirected_path| == nullptr, no redirection is expected in any case.
+void DoRedirectTest(nt::ROOT_KEY nt_root_key,
+ const wchar_t* path,
+ const wchar_t* redirected_path OPTIONAL) {
+ HANDLE handle = INVALID_HANDLE_VALUE;
+ HKEY key_handle = nullptr;
+ constexpr ACCESS_MASK kAccess = KEY_WRITE | DELETE;
+ const HKEY root_key =
+ (nt_root_key == nt::HKCU) ? HKEY_CURRENT_USER : HKEY_LOCAL_MACHINE;
+
+ // Make sure clean before starting.
+ nt::DeleteRegKey(nt_root_key, nt::NONE, path);
+ if (redirected_path)
+ nt::DeleteRegKey(nt_root_key, nt::NONE, redirected_path);
+
+ //----------------------------------------------------------------------------
+ // No redirection through ADVAPI32 on straight x86 or x64.
+ ASSERT_EQ(ERROR_SUCCESS,
+ RegCreateKeyExW(root_key, path, 0, nullptr, REG_OPTION_NON_VOLATILE,
+ kAccess, nullptr, &key_handle, nullptr));
+ ASSERT_EQ(ERROR_SUCCESS, RegCloseKey(key_handle));
+ ASSERT_TRUE(nt::OpenRegKey(nt_root_key, path, kAccess, &handle, nullptr));
+ ASSERT_TRUE(nt::DeleteRegKey(handle));
+ nt::CloseRegKey(handle);
+
+#ifdef _WIN64
+ //----------------------------------------------------------------------------
+ // Try forcing WOW64 redirection on x64 through ADVAPI32.
+ ASSERT_EQ(ERROR_SUCCESS,
+ RegCreateKeyExW(root_key, path, 0, nullptr, REG_OPTION_NON_VOLATILE,
+ kAccess | KEY_WOW64_32KEY, nullptr, &key_handle,
+ nullptr));
+ ASSERT_EQ(ERROR_SUCCESS, RegCloseKey(key_handle));
+ // Check path:
+ if (nt::OpenRegKey(nt_root_key, path, kAccess, &handle, nullptr)) {
+ if (redirected_path)
+ ADD_FAILURE();
+ ASSERT_TRUE(nt::DeleteRegKey(handle));
+ nt::CloseRegKey(handle);
+ } else if (!redirected_path) {
+ // Should have succeeded.
+ ADD_FAILURE();
+ }
+ if (redirected_path) {
+ // Check redirected path:
+ if (nt::OpenRegKey(nt_root_key, redirected_path, kAccess, &handle,
+ nullptr)) {
+ if (!redirected_path)
+ ADD_FAILURE();
+ ASSERT_TRUE(nt::DeleteRegKey(handle));
+ nt::CloseRegKey(handle);
+ } else {
+ // Should have succeeded.
+ ADD_FAILURE();
+ }
+ }
+
+ //----------------------------------------------------------------------------
+ // Try forcing WOW64 redirection on x64 through NTDLL.
+ ASSERT_TRUE(
+ nt::CreateRegKey(nt_root_key, path, kAccess | KEY_WOW64_32KEY, nullptr));
+ // Check path:
+ if (nt::OpenRegKey(nt_root_key, path, kAccess, &handle, nullptr)) {
+ if (redirected_path)
+ ADD_FAILURE();
+ ASSERT_TRUE(nt::DeleteRegKey(handle));
+ nt::CloseRegKey(handle);
+ } else if (!redirected_path) {
+ // Should have succeeded.
+ ADD_FAILURE();
+ }
+ if (redirected_path) {
+ // Check redirected path:
+ if (nt::OpenRegKey(nt_root_key, redirected_path, kAccess, &handle,
+ nullptr)) {
+ if (!redirected_path)
+ ADD_FAILURE();
+ ASSERT_TRUE(nt::DeleteRegKey(handle));
+ nt::CloseRegKey(handle);
+ } else {
+ // Should have succeeded.
+ ADD_FAILURE();
+ }
+ }
+#endif // _WIN64
+}
+
+// These test reg paths match |kClassesSubtree| in nt_registry.cc.
+constexpr const wchar_t* kClassesRedirects[] = {
+ L"SOFTWARE\\Classes\\CLSID\\chrome_testing",
+ L"SOFTWARE\\Classes\\WOW6432Node\\CLSID\\chrome_testing",
+ L"SOFTWARE\\Classes\\DirectShow\\chrome_testing",
+ L"SOFTWARE\\Classes\\WOW6432Node\\DirectShow\\chrome_testing",
+ L"SOFTWARE\\Classes\\Interface\\chrome_testing",
+ L"SOFTWARE\\Classes\\WOW6432Node\\Interface\\chrome_testing",
+ L"SOFTWARE\\Classes\\Media Type\\chrome_testing",
+ L"SOFTWARE\\Classes\\WOW6432Node\\Media Type\\chrome_testing",
+ L"SOFTWARE\\Classes\\MediaFoundation\\chrome_testing",
+ L"SOFTWARE\\Classes\\WOW6432Node\\MediaFoundation\\chrome_testing"};
+
+static_assert((_countof(kClassesRedirects) & 0x01) == 0,
+ "Must have an even number of kClassesRedirects.");
+
+// This test does NOT use NtRegistryTest class. It requires Windows WOW64
+// redirection to take place, which would not happen with a testing redirection
+// layer.
+TEST(NtRegistryTestRedirection, Wow64RedirectionHKCU) {
+ // Using two elements for each loop.
+ for (size_t index = 0; index < _countof(kClassesRedirects); index += 2) {
+ DoRedirectTest(nt::HKCU, kClassesRedirects[index],
+ kClassesRedirects[index + 1]);
+ }
+}
+
+// These test reg paths match |kHklmSoftwareSubtree| in nt_registry.cc.
+constexpr const wchar_t* kHKLMNoRedirects[] = {
+ L"SOFTWARE\\Classes\\chrome_testing", L"SOFTWARE\\Clients\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\COM3\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Cryptography\\Calais\\Current\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Cryptography\\Calais\\Readers\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Cryptography\\Services\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\CTF\\SystemShared\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\CTF\\TIP\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\DFS\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Driver Signing\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\EnterpriseCertificates\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\EventSystem\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\MSMQ\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Non-Driver Signing\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Notepad\\DefaultFonts\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\OLE\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\RAS\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\RPC\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\SOFTWARE\\Microsoft\\Shared "
+ L"Tools\\MSInfo\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\SystemCertificates\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\TermServLicensing\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Transaction Server\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\App "
+ L"Paths\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Control "
+ L"Panel\\Cursors\\Schemes\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\AutoplayHandlers"
+ L"\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\DriveIcons"
+ L"\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\KindMap"
+ L"\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Group "
+ L"Policy\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\PreviewHandlers"
+ L"\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Setup\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Telephony\\Locations"
+ L"\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows "
+ L"NT\\CurrentVersion\\Console\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows "
+ L"NT\\CurrentVersion\\FontDpi\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows "
+ L"NT\\CurrentVersion\\FontLink\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows "
+ L"NT\\CurrentVersion\\FontMapper\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Fonts\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows "
+ L"NT\\CurrentVersion\\FontSubstitutes\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows "
+ L"NT\\CurrentVersion\\Gre_initialize\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Image File Execution "
+ L"Options\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows "
+ L"NT\\CurrentVersion\\LanguagePack\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\NetworkCards"
+ L"\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows "
+ L"NT\\CurrentVersion\\Perflib\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Ports\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Print\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\ProfileList"
+ L"\\chrome_testing",
+ L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Time "
+ L"Zones\\chrome_testing",
+ L"SOFTWARE\\Policies\\chrome_testing",
+ L"SOFTWARE\\RegisteredApplications\\chrome_testing"};
+
+// Run from administrator command prompt!
+// Note: Disabled for automated testing (HKLM protection). Local testing
+// only.
+//
+// This test does NOT use NtRegistryTest class. It requires Windows WOW64
+// redirection to take place, which would not happen with a testing redirection
+// layer.
+TEST(NtRegistryTestRedirection, DISABLED_Wow64RedirectionHKLM) {
+ // 1) SOFTWARE is redirected.
+ DoRedirectTest(nt::HKLM, L"SOFTWARE\\chrome_testing",
+ L"SOFTWARE\\WOW6432Node\\chrome_testing");
+
+ // 2) Except some subkeys are not.
+ for (size_t index = 0; index < _countof(kHKLMNoRedirects); ++index) {
+ DoRedirectTest(nt::HKLM, kHKLMNoRedirects[index], nullptr);
+ }
+
+ // 3) But then some Classes subkeys are redirected.
+ // Using two elements for each loop.
+ for (size_t index = 0; index < _countof(kClassesRedirects); index += 2) {
+ DoRedirectTest(nt::HKLM, kClassesRedirects[index],
+ kClassesRedirects[index + 1]);
+ }
+
+ // 4) And just make sure other Classes subkeys are shared.
+ DoRedirectTest(nt::HKLM, L"SOFTWARE\\Classes\\chrome_testing", nullptr);
+}
+
+TEST(NtRegistryTestMisc, SanitizeSubkeyPaths) {
+ std::wstring new_path = L"";
+ EXPECT_TRUE(nt::SetTestingOverride(nt::HKCU, new_path));
+ std::wstring sani_path = nt::GetTestingOverride(nt::HKCU);
+ EXPECT_STREQ(L"", sani_path.c_str());
+
+ new_path = L"boo";
+ EXPECT_TRUE(nt::SetTestingOverride(nt::HKCU, new_path));
+ sani_path = nt::GetTestingOverride(nt::HKCU);
+ EXPECT_STREQ(L"boo", sani_path.c_str());
+
+ new_path = L"\\boo";
+ EXPECT_TRUE(nt::SetTestingOverride(nt::HKCU, new_path));
+ sani_path = nt::GetTestingOverride(nt::HKCU);
+ EXPECT_STREQ(L"boo", sani_path.c_str());
+
+ new_path = L"boo\\";
+ EXPECT_TRUE(nt::SetTestingOverride(nt::HKCU, new_path));
+ sani_path = nt::GetTestingOverride(nt::HKCU);
+ EXPECT_STREQ(L"boo", sani_path.c_str());
+
+ new_path = L"\\\\\\";
+ EXPECT_TRUE(nt::SetTestingOverride(nt::HKCU, new_path));
+ sani_path = nt::GetTestingOverride(nt::HKCU);
+ EXPECT_STREQ(L"", sani_path.c_str());
+
+ new_path = L"boo\\\\\\ya";
+ EXPECT_TRUE(nt::SetTestingOverride(nt::HKCU, new_path));
+ sani_path = nt::GetTestingOverride(nt::HKCU);
+ EXPECT_STREQ(L"boo\\ya", sani_path.c_str());
+
+ new_path = L"\\\\\\boo\\ya\\\\";
+ EXPECT_TRUE(nt::SetTestingOverride(nt::HKCU, new_path));
+ sani_path = nt::GetTestingOverride(nt::HKCU);
+ EXPECT_STREQ(L"boo\\ya", sani_path.c_str());
+
+ // Be sure to leave the environment clean.
+ new_path.clear();
+ EXPECT_TRUE(nt::SetTestingOverride(nt::HKCU, new_path));
+ sani_path = nt::GetTestingOverride(nt::HKCU);
+ EXPECT_STREQ(L"", sani_path.c_str());
+}
+
+//------------------------------------------------------------------------------
+// NtRegistryTest class
+//
+// Only use this class for tests that need testing registry redirection.
+//------------------------------------------------------------------------------
+
+class NtRegistryTest : public testing::Test {
+ protected:
+ void SetUp() override {
+ base::string16 temp;
+ override_manager_.OverrideRegistry(HKEY_CURRENT_USER, &temp);
+ ASSERT_TRUE(nt::SetTestingOverride(nt::HKCU, temp));
+ override_manager_.OverrideRegistry(HKEY_LOCAL_MACHINE, &temp);
+ ASSERT_TRUE(nt::SetTestingOverride(nt::HKLM, temp));
+ }
+
+ void TearDown() override {
+ base::string16 temp;
+ ASSERT_TRUE(nt::SetTestingOverride(nt::HKCU, temp));
+ ASSERT_TRUE(nt::SetTestingOverride(nt::HKLM, temp));
+ }
+
+ private:
+ registry_util::RegistryOverrideManager override_manager_;
+};
+
+//------------------------------------------------------------------------------
+// NT registry API tests
+//------------------------------------------------------------------------------
+
+TEST_F(NtRegistryTest, API_DWORD) {
+ HANDLE key_handle;
+ const wchar_t* dword_val_name = L"DwordTestValue";
+ DWORD dword_val = 1234;
+
+ // Create a subkey to play under.
+ ASSERT_TRUE(nt::CreateRegKey(nt::HKCU, L"NTRegistry\\dword", KEY_ALL_ACCESS,
+ &key_handle));
+ ASSERT_NE(key_handle, INVALID_HANDLE_VALUE);
+ ASSERT_NE(key_handle, nullptr);
+
+ DWORD get_dword = 0;
+ EXPECT_FALSE(nt::QueryRegValueDWORD(key_handle, dword_val_name, &get_dword));
+
+ // Set
+ EXPECT_TRUE(nt::SetRegValueDWORD(key_handle, dword_val_name, dword_val));
+
+ // Get
+ EXPECT_TRUE(nt::QueryRegValueDWORD(key_handle, dword_val_name, &get_dword));
+ EXPECT_TRUE(get_dword == dword_val);
+
+ // Clean up
+ EXPECT_TRUE(nt::DeleteRegKey(key_handle));
+ nt::CloseRegKey(key_handle);
+}
+
+TEST_F(NtRegistryTest, API_SZ) {
+ HANDLE key_handle;
+ const wchar_t* sz_val_name = L"SzTestValue";
+ std::wstring sz_val = L"blah de blah de blahhhhh.";
+ const wchar_t* sz_val_name2 = L"SzTestValueEmpty";
+ std::wstring sz_val2 = L"";
+
+ // Create a subkey to play under.
+ ASSERT_TRUE(nt::CreateRegKey(nt::HKCU, L"NTRegistry\\sz", KEY_ALL_ACCESS,
+ &key_handle));
+ ASSERT_NE(key_handle, INVALID_HANDLE_VALUE);
+ ASSERT_NE(key_handle, nullptr);
+
+ std::wstring get_sz;
+ EXPECT_FALSE(nt::QueryRegValueSZ(key_handle, sz_val_name, &get_sz));
+
+ // Set
+ EXPECT_TRUE(nt::SetRegValueSZ(key_handle, sz_val_name, sz_val));
+ EXPECT_TRUE(nt::SetRegValueSZ(key_handle, sz_val_name2, sz_val2));
+
+ // Get
+ EXPECT_TRUE(nt::QueryRegValueSZ(key_handle, sz_val_name, &get_sz));
+ EXPECT_TRUE(get_sz.compare(sz_val) == 0);
+ EXPECT_TRUE(nt::QueryRegValueSZ(key_handle, sz_val_name2, &get_sz));
+ EXPECT_TRUE(get_sz.compare(sz_val2) == 0);
+
+ // Clean up
+ EXPECT_TRUE(nt::DeleteRegKey(key_handle));
+ nt::CloseRegKey(key_handle);
+}
+
+TEST_F(NtRegistryTest, API_MULTISZ) {
+ HANDLE key_handle;
+ const wchar_t* multisz_val_name = L"SzmultiTestValue";
+ std::vector<std::wstring> multisz_val;
+ std::wstring multi1 = L"one";
+ std::wstring multi2 = L"two";
+ std::wstring multi3 = L"three";
+ const wchar_t* multisz_val_name2 = L"SzmultiTestValueBad";
+ std::wstring multi_empty = L"";
+
+ // Create a subkey to play under.
+ ASSERT_TRUE(nt::CreateRegKey(nt::HKCU, L"NTRegistry\\multisz", KEY_ALL_ACCESS,
+ &key_handle));
+ ASSERT_NE(key_handle, INVALID_HANDLE_VALUE);
+ ASSERT_NE(key_handle, nullptr);
+
+ multisz_val.push_back(multi1);
+ multisz_val.push_back(multi2);
+ multisz_val.push_back(multi3);
+ // Set
+ EXPECT_TRUE(
+ nt::SetRegValueMULTISZ(key_handle, multisz_val_name, multisz_val));
+ multisz_val.clear();
+ multisz_val.push_back(multi_empty);
+ // Set
+ EXPECT_TRUE(
+ nt::SetRegValueMULTISZ(key_handle, multisz_val_name2, multisz_val));
+ multisz_val.clear();
+
+ // Get
+ EXPECT_TRUE(
+ nt::QueryRegValueMULTISZ(key_handle, multisz_val_name, &multisz_val));
+ if (multisz_val.size() == 3) {
+ EXPECT_TRUE(multi1.compare(multisz_val.at(0)) == 0);
+ EXPECT_TRUE(multi2.compare(multisz_val.at(1)) == 0);
+ EXPECT_TRUE(multi3.compare(multisz_val.at(2)) == 0);
+ } else {
+ EXPECT_TRUE(false);
+ }
+ multisz_val.clear();
+
+ // Get
+ EXPECT_TRUE(
+ nt::QueryRegValueMULTISZ(key_handle, multisz_val_name2, &multisz_val));
+ if (multisz_val.size() == 1) {
+ EXPECT_TRUE(multi_empty.compare(multisz_val.at(0)) == 0);
+ } else {
+ EXPECT_TRUE(false);
+ }
+ multisz_val.clear();
+
+ // Clean up
+ EXPECT_TRUE(nt::DeleteRegKey(key_handle));
+ nt::CloseRegKey(key_handle);
+}
+
+TEST_F(NtRegistryTest, CreateRegKeyRecursion) {
+ HANDLE key_handle;
+ const wchar_t* sz_new_key_1 = L"test1\\new\\subkey";
+ const wchar_t* sz_new_key_2 = L"test2\\new\\subkey\\blah\\";
+ const wchar_t* sz_new_key_3 = L"\\test3\\new\\subkey\\\\blah2";
+
+ // Tests for CreateRegKey recursion.
+ ASSERT_TRUE(
+ nt::CreateRegKey(nt::HKCU, sz_new_key_1, KEY_ALL_ACCESS, nullptr));
+ EXPECT_TRUE(nt::OpenRegKey(nt::HKCU, sz_new_key_1, KEY_ALL_ACCESS,
+ &key_handle, nullptr));
+ EXPECT_TRUE(nt::DeleteRegKey(key_handle));
+ nt::CloseRegKey(key_handle);
+
+ ASSERT_TRUE(
+ nt::CreateRegKey(nt::HKCU, sz_new_key_2, KEY_ALL_ACCESS, nullptr));
+ EXPECT_TRUE(nt::OpenRegKey(nt::HKCU, sz_new_key_2, KEY_ALL_ACCESS,
+ &key_handle, nullptr));
+ EXPECT_TRUE(nt::DeleteRegKey(key_handle));
+ nt::CloseRegKey(key_handle);
+
+ ASSERT_TRUE(
+ nt::CreateRegKey(nt::HKCU, sz_new_key_3, KEY_ALL_ACCESS, nullptr));
+ EXPECT_TRUE(nt::OpenRegKey(nt::HKCU, L"test3\\new\\subkey\\blah2",
+ KEY_ALL_ACCESS, &key_handle, nullptr));
+ EXPECT_TRUE(nt::DeleteRegKey(key_handle));
+ nt::CloseRegKey(key_handle);
+
+ // Subkey path can be null.
+ ASSERT_TRUE(nt::CreateRegKey(nt::HKCU, nullptr, KEY_ALL_ACCESS, &key_handle));
+ ASSERT_NE(key_handle, INVALID_HANDLE_VALUE);
+ ASSERT_NE(key_handle, nullptr);
+ nt::CloseRegKey(key_handle);
+}
+
+} // namespace
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