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// Copyright 2019 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 "base/win/hstring_reference.h"
#include "base/strings/string_piece.h"
#include "base/win/scoped_hstring.h"
#include "base/win/windows_version.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace win {
namespace {
constexpr wchar_t kTestString[] = L"123";
constexpr wchar_t kEmptyString[] = L"";
void VerifyHSTRINGEquals(HSTRING hstring, const wchar_t* test_string) {
const ScopedHString scoped_hstring(hstring);
const WStringPiece hstring_contents = scoped_hstring.Get();
EXPECT_EQ(hstring_contents.compare(test_string), 0);
}
} // namespace
TEST(HStringReferenceTest, Init) {
// ScopedHString requires WinRT core functions, which are not available in
// older versions.
if (GetVersion() < Version::WIN8) {
EXPECT_FALSE(HStringReference::ResolveCoreWinRTStringDelayload());
return;
}
EXPECT_TRUE(HStringReference::ResolveCoreWinRTStringDelayload());
EXPECT_TRUE(ScopedHString::ResolveCoreWinRTStringDelayload());
const HStringReference string(kTestString);
EXPECT_NE(string.Get(), nullptr);
VerifyHSTRINGEquals(string.Get(), kTestString);
// Empty strings come back as null HSTRINGs, a valid HSTRING.
const HStringReference empty_string(kEmptyString);
EXPECT_EQ(empty_string.Get(), nullptr);
VerifyHSTRINGEquals(empty_string.Get(), kEmptyString);
// Passing a zero length and null string should also return a null HSTRING.
const HStringReference null_string(nullptr, 0);
EXPECT_EQ(null_string.Get(), nullptr);
VerifyHSTRINGEquals(null_string.Get(), kEmptyString);
}
} // namespace win
} // namespace base
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