| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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 "kudu/util/char_util.h" |
| |
| #include <cstdint> |
| #include <memory> |
| |
| #include <glog/logging.h> |
| #include <gtest/gtest.h> |
| |
| #include "kudu/util/debug/sanitizer_scopes.h" |
| #include "kudu/util/env.h" |
| #include "kudu/util/faststring.h" |
| #include "kudu/util/init.h" |
| #include "kudu/util/path_util.h" |
| #include "kudu/util/slice.h" |
| #include "kudu/util/status.h" |
| #include "kudu/util/test_util.h" |
| |
| using std::unique_ptr; |
| |
| namespace kudu { |
| |
| class CharUtilTest : public KuduTest { |
| protected: |
| Slice data_utf8_; |
| Slice data_ascii_; |
| |
| void SetUp() override { |
| // UTF8Truncate uses SSE4.1 instructions so we need to make sure the CPU |
| // running the test has these opcodes. |
| CHECK_OK(CheckCPUFlags()); |
| ReadFileToString(env_, JoinPathSegments(GetTestExecutableDirectory(), |
| "testdata/char_truncate_utf8.txt"), |
| &string_utf8_); |
| data_utf8_ = Slice(string_utf8_); |
| ReadFileToString(env_, JoinPathSegments(GetTestExecutableDirectory(), |
| "testdata/char_truncate_ascii.txt"), |
| &string_ascii_); |
| data_ascii_ = Slice(string_ascii_); |
| } |
| |
| unique_ptr<const uint8_t[]> Truncate(const Slice& slice, int length, Slice* result) { |
| *result = UTF8Truncate(slice, length); |
| return std::unique_ptr<const uint8_t[]>(result->data()); |
| } |
| |
| void StressTest(const Slice& slice, int length) { |
| // The memory accesses done in UTF8Truncate are quite slow with TSAN |
| // instrumentation, probably because so many of them are unaligned. |
| // Since this test is single-threaded, let's just disable TSAN in it. |
| debug::ScopedTSANIgnoreReadsAndWrites ignore_tsan; |
| for (int i = 0; i < kNumCycles_; ++i) { |
| Slice result; |
| auto ptr = Truncate(slice, length, &result); |
| ASSERT_FALSE(result.empty()); |
| } |
| } |
| |
| private: |
| const int kNumCycles_ = 1000000; |
| faststring string_utf8_; |
| faststring string_ascii_; |
| }; |
| |
| TEST_F(CharUtilTest, CorrectnessTestUtf8) { |
| Slice result; |
| auto ptr = Truncate(data_utf8_, 9756, &result); |
| ASSERT_EQ(10549, result.size()); |
| |
| ptr = Truncate(data_utf8_, 10549, &result); |
| ASSERT_EQ(10550, result.size()); |
| } |
| |
| TEST_F(CharUtilTest, CorrectnessTestAscii) { |
| Slice result; |
| auto ptr = Truncate(data_ascii_, 9756, &result); |
| ASSERT_EQ(9756, result.size()); |
| ptr = Truncate(data_ascii_, 10549, &result); |
| ASSERT_EQ(10549, result.size()); |
| } |
| |
| TEST_F(CharUtilTest, CorrectnessTestIncompleteUtf8) { |
| Slice result; |
| Slice test_data = "aaaa\xf3"; |
| |
| auto ptr = Truncate(test_data, 5, &result); |
| ASSERT_EQ(test_data, result); |
| } |
| |
| TEST_F(CharUtilTest, CorrectnessTestUtf8AndAscii) { |
| Slice result; |
| Slice data = "ááááááááááááááááááááááááááááááááaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"; |
| |
| auto ptr = Truncate(data, 64, &result); |
| ASSERT_EQ(data, result); |
| |
| data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaáááááááááááááááááááááááááááááááá"; |
| ptr = Truncate(data, 64, &result); |
| ASSERT_EQ(data, result); |
| } |
| |
| TEST_F(CharUtilTest, StressTestUtf8) { |
| StressTest(data_utf8_, 9000); |
| } |
| |
| TEST_F(CharUtilTest, StressTestAscii) { |
| StressTest(data_ascii_, 9000); |
| } |
| |
| } // namespace kudu |