Abseil Common Libraries (C++) (grcp 依赖)
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57 lines
2.3 KiB
57 lines
2.3 KiB
// Copyright 2017 The Abseil Authors. |
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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 "absl/strings/internal/utf8.h" |
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#include <cstdint> |
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#include <utility> |
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#include "gtest/gtest.h" |
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#include "absl/base/port.h" |
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namespace { |
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TEST(EncodeUTF8Char, BasicFunction) { |
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std::pair<char32_t, std::string> tests[] = {{0x0030, u8"\u0030"}, |
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{0x00A3, u8"\u00A3"}, |
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{0x00010000, u8"\U00010000"}, |
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{0x0000FFFF, u8"\U0000FFFF"}, |
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{0x0010FFFD, u8"\U0010FFFD"}}; |
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for (auto &test : tests) { |
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char buf0[7] = {'\x00', '\x00', '\x00', '\x00', '\x00', '\x00', '\x00'}; |
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char buf1[7] = {'\xFF', '\xFF', '\xFF', '\xFF', '\xFF', '\xFF', '\xFF'}; |
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char *buf0_written = |
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&buf0[absl::strings_internal::EncodeUTF8Char(buf0, test.first)]; |
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char *buf1_written = |
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&buf1[absl::strings_internal::EncodeUTF8Char(buf1, test.first)]; |
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int apparent_length = 7; |
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while (buf0[apparent_length - 1] == '\x00' && |
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buf1[apparent_length - 1] == '\xFF') { |
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if (--apparent_length == 0) break; |
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} |
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EXPECT_EQ(apparent_length, buf0_written - buf0); |
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EXPECT_EQ(apparent_length, buf1_written - buf1); |
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EXPECT_EQ(apparent_length, test.second.length()); |
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EXPECT_EQ(std::string(buf0, apparent_length), test.second); |
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EXPECT_EQ(std::string(buf1, apparent_length), test.second); |
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} |
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char buf[32] = "Don't Tread On Me"; |
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EXPECT_LE(absl::strings_internal::EncodeUTF8Char(buf, 0x00110000), |
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absl::strings_internal::kMaxEncodedUTF8Size); |
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char buf2[32] = "Negative is invalid but sane"; |
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EXPECT_LE(absl::strings_internal::EncodeUTF8Char(buf2, -1), |
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absl::strings_internal::kMaxEncodedUTF8Size); |
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} |
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} // namespace
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