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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/public/platform/web_string.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
TEST(WebStringTest, UTF8ConversionRoundTrip) {
// Valid characters.
for (WebUChar uchar = 0; uchar <= 0xD7FF; ++uchar) {
WebString utf16_string(std::u16string_view(&uchar, 1));
std::string utf8_string(utf16_string.Utf8());
WebString utf16_new_string = WebString::FromUTF8(utf8_string);
EXPECT_FALSE(utf16_new_string.IsNull());
EXPECT_TRUE(utf16_string == utf16_new_string);
}
// Unpaired surrogates.
for (WebUChar uchar = 0xD800; uchar <= 0xDFFF; ++uchar) {
WebString utf16_string(std::u16string_view(&uchar, 1));
// Conversion with Strict mode results in an empty string.
std::string utf8_string(
utf16_string.Utf8(WebString::UTF8ConversionMode::kStrict));
EXPECT_TRUE(utf8_string.empty());
// Unpaired surrogates can't be converted back in Lenient mode.
utf8_string = utf16_string.Utf8(WebString::UTF8ConversionMode::kLenient);
EXPECT_FALSE(utf8_string.empty());
WebString utf16_new_string = WebString::FromUTF8(utf8_string);
EXPECT_TRUE(utf16_new_string.IsNull());
// Round-trip works with StrictReplacingErrorsWithFFFD mode.
utf8_string = utf16_string.Utf8(
WebString::UTF8ConversionMode::kStrictReplacingErrorsWithFFFD);
EXPECT_FALSE(utf8_string.empty());
utf16_new_string = WebString::FromUTF8(utf8_string);
EXPECT_FALSE(utf16_new_string.IsNull());
EXPECT_FALSE(utf16_string == utf16_new_string);
}
}
} // namespace blink
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