// Copyright 2017 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "src/utf8_fix.h"
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#include "port/gtest.h"
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#include "port/protobuf.h"
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namespace protobuf_mutator {
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protobuf::LogSilencer log_silincer;
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class FixUtf8StringTest : public ::testing::TestWithParam<int> {
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public:
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bool IsStructurallyValid(const std::string& s) {
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using protobuf::internal::WireFormatLite;
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return WireFormatLite::VerifyUtf8String(s.data(), s.length(),
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WireFormatLite::PARSE, "");
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}
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};
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TEST_F(FixUtf8StringTest, IsStructurallyValid) {
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EXPECT_TRUE(IsStructurallyValid(""));
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EXPECT_TRUE(IsStructurallyValid("abc"));
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EXPECT_TRUE(IsStructurallyValid("\xC2\xA2"));
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EXPECT_TRUE(IsStructurallyValid("\xE2\x82\xAC"));
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EXPECT_TRUE(IsStructurallyValid("\xF0\x90\x8D\x88"));
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EXPECT_FALSE(IsStructurallyValid("\xFF\xFF\xFF\xFF"));
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EXPECT_FALSE(IsStructurallyValid("\xFF\x8F"));
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EXPECT_FALSE(IsStructurallyValid("\x3F\xBF"));
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}
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INSTANTIATE_TEST_CASE_P(Size, FixUtf8StringTest, ::testing::Range(0, 10));
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TEST_P(FixUtf8StringTest, FixUtf8String) {
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RandomEngine random(GetParam());
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std::uniform_int_distribution<uint8_t> random8(0, 0xFF);
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std::string str(random8(random), 0);
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for (uint32_t run = 0; run < 10000; ++run) {
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for (size_t i = 0; i < str.size(); ++i) str[i] = random8(random);
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std::string fixed = str;
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FixUtf8String(&fixed, &random);
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if (IsStructurallyValid(str)) {
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EXPECT_EQ(str, fixed);
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} else {
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EXPECT_TRUE(IsStructurallyValid(fixed));
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}
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}
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}
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} // namespace protobuf_mutator
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