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// Copyright 2017 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 "public/platform/WebString.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "wtf/text/WTFString.h"
namespace blink {
TEST(WebStringTest, UTF8ConversionRoundTrip) {
// Valid characters.
for (UChar uchar = 0; uchar <= 0xD7FF; ++uchar) {
WebString utf16String(&uchar, 1);
std::string utf8String(utf16String.utf8());
WebString utf16NewString =
WebString::fromUTF8(utf8String.data(), utf8String.length());
EXPECT_FALSE(utf16NewString.isNull());
EXPECT_TRUE(utf16String == utf16NewString);
}
// Unpaired surrogates.
for (UChar uchar = 0xD800; uchar <= 0xDFFF; ++uchar) {
WebString utf16String(&uchar, 1);
// Conversion with Strict mode results in an empty string.
std::string utf8String(
utf16String.utf8(WebString::UTF8ConversionMode::kStrict));
EXPECT_TRUE(utf8String.empty());
// Unpaired surrogates can't be converted back in Lenient mode.
utf8String = utf16String.utf8(WebString::UTF8ConversionMode::kLenient);
EXPECT_FALSE(utf8String.empty());
WebString utf16NewString =
WebString::fromUTF8(utf8String.data(), utf8String.length());
EXPECT_TRUE(utf16NewString.isNull());
// Round-trip works with StrictReplacingErrorsWithFFFD mode.
utf8String = utf16String.utf8(
WebString::UTF8ConversionMode::kStrictReplacingErrorsWithFFFD);
EXPECT_FALSE(utf8String.empty());
utf16NewString =
WebString::fromUTF8(utf8String.data(), utf8String.length());
EXPECT_FALSE(utf16NewString.isNull());
EXPECT_FALSE(utf16String == utf16NewString);
}
}
} // namespace blink
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