67 lines
2.3 KiB
C++
67 lines
2.3 KiB
C++
/*
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* Copyright 2022 The Android Open Source Project
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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 <ftl/algorithm.h>
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#include <ftl/small_map.h>
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#include <ftl/static_vector.h>
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#include <gtest/gtest.h>
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#include <string_view>
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namespace android::test {
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// Keep in sync with example usage in header file.
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TEST(Algorithm, FindIf) {
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using namespace std::string_view_literals;
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const ftl::StaticVector vector = {"upside"sv, "down"sv, "cake"sv};
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EXPECT_EQ(ftl::find_if(vector, [](const auto& str) { return str.front() == 'c'; }), "cake"sv);
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const ftl::SmallMap map = ftl::init::map<int, ftl::StaticVector<std::string_view, 3>>(
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12, "snow"sv, "cone"sv)(13, "tiramisu"sv)(14, "upside"sv, "down"sv, "cake"sv);
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using Map = decltype(map);
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EXPECT_EQ(14, ftl::find_if(map, [](const auto& pair) {
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return pair.second.size() == 3;
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}).transform(ftl::to_key<Map>));
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const auto opt = ftl::find_if(map, [](const auto& pair) {
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return pair.second.size() == 1;
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}).transform(ftl::to_mapped_ref<Map>);
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ASSERT_TRUE(opt);
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EXPECT_EQ(opt->get(), ftl::StaticVector("tiramisu"sv));
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}
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TEST(Algorithm, StaticRef) {
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using namespace std::string_view_literals;
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const ftl::SmallMap map = ftl::init::map(13, "tiramisu"sv)(14, "upside-down cake"sv);
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ASSERT_EQ("???"sv,
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map.get(20).or_else(ftl::static_ref<std::string_view>([] { return "???"sv; }))->get());
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using Map = decltype(map);
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ASSERT_EQ("snow cone"sv,
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ftl::find_if(map, [](const auto& pair) { return pair.second.front() == 's'; })
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.transform(ftl::to_mapped_ref<Map>)
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.or_else(ftl::static_ref<std::string_view>([] { return "snow cone"sv; }))
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->get());
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}
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} // namespace android::test
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