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66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
//
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// 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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//
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#include "absl/strings/internal/str_format/extension.h"
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#include <random>
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#include <string>
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#include "absl/strings/str_format.h"
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#include "gtest/gtest.h"
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namespace {
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std::string MakeRandomString(size_t len) {
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std::random_device rd;
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std::mt19937 gen(rd());
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std::uniform_int_distribution<> dis('a', 'z');
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std::string s(len, '0');
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for (char& c : s) {
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c = dis(gen);
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}
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return s;
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}
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TEST(FormatExtensionTest, SinkAppendSubstring) {
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for (size_t chunk_size : {1, 10, 100, 1000, 10000}) {
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std::string expected, actual;
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absl::str_format_internal::FormatSinkImpl sink(&actual);
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for (size_t chunks = 0; chunks < 10; ++chunks) {
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std::string rand = MakeRandomString(chunk_size);
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expected += rand;
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sink.Append(rand);
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}
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sink.Flush();
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EXPECT_EQ(actual, expected);
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}
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}
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TEST(FormatExtensionTest, SinkAppendChars) {
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for (size_t chunk_size : {1, 10, 100, 1000, 10000}) {
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std::string expected, actual;
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absl::str_format_internal::FormatSinkImpl sink(&actual);
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for (size_t chunks = 0; chunks < 10; ++chunks) {
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std::string rand = MakeRandomString(1);
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expected.append(chunk_size, rand[0]);
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sink.Append(chunk_size, rand[0]);
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}
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sink.Flush();
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EXPECT_EQ(actual, expected);
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}
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}
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} // namespace
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