| // Copyright 2017 The Abseil Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "absl/strings/internal/utf8.h" |
| |
| #include <cstdint> |
| #include <utility> |
| |
| #include "gtest/gtest.h" |
| #include "absl/base/port.h" |
| |
| namespace { |
| |
| TEST(EncodeUTF8Char, BasicFunction) { |
| std::pair<char32_t, std::string> tests[] = {{0x0030, u8"\u0030"}, |
| {0x00A3, u8"\u00A3"}, |
| {0x00010000, u8"\U00010000"}, |
| {0x0000FFFF, u8"\U0000FFFF"}, |
| {0x0010FFFD, u8"\U0010FFFD"}}; |
| for (auto &test : tests) { |
| char buf0[7] = {'\x00', '\x00', '\x00', '\x00', '\x00', '\x00', '\x00'}; |
| char buf1[7] = {'\xFF', '\xFF', '\xFF', '\xFF', '\xFF', '\xFF', '\xFF'}; |
| char *buf0_written = |
| &buf0[absl::strings_internal::EncodeUTF8Char(buf0, test.first)]; |
| char *buf1_written = |
| &buf1[absl::strings_internal::EncodeUTF8Char(buf1, test.first)]; |
| int apparent_length = 7; |
| while (buf0[apparent_length - 1] == '\x00' && |
| buf1[apparent_length - 1] == '\xFF') { |
| if (--apparent_length == 0) break; |
| } |
| EXPECT_EQ(apparent_length, buf0_written - buf0); |
| EXPECT_EQ(apparent_length, buf1_written - buf1); |
| EXPECT_EQ(apparent_length, test.second.length()); |
| EXPECT_EQ(std::string(buf0, apparent_length), test.second); |
| EXPECT_EQ(std::string(buf1, apparent_length), test.second); |
| } |
| char buf[32] = "Don't Tread On Me"; |
| EXPECT_LE(absl::strings_internal::EncodeUTF8Char(buf, 0x00110000), |
| absl::strings_internal::kMaxEncodedUTF8Size); |
| char buf2[32] = "Negative is invalid but sane"; |
| EXPECT_LE(absl::strings_internal::EncodeUTF8Char(buf2, -1), |
| absl::strings_internal::kMaxEncodedUTF8Size); |
| } |
| |
| } // namespace |
