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132 lines
3.6 KiB
132 lines
3.6 KiB
/*
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* Copyright 2020 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/small_map.h>
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#include <gtest/gtest.h>
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#include <cctype>
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namespace android::test {
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using ftl::SmallMap;
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// Keep in sync with example usage in header file.
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TEST(SmallMap, Example) {
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ftl::SmallMap<int, std::string, 3> map;
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EXPECT_TRUE(map.empty());
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EXPECT_FALSE(map.dynamic());
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map = ftl::init::map<int, std::string>(123, "abc")(-1)(42, 3u, '?');
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EXPECT_EQ(map.size(), 3u);
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EXPECT_FALSE(map.dynamic());
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EXPECT_TRUE(map.contains(123));
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EXPECT_EQ(map.find(42, [](const std::string& s) { return s.size(); }), 3u);
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const auto opt = map.find(-1);
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ASSERT_TRUE(opt);
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std::string& ref = *opt;
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EXPECT_TRUE(ref.empty());
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ref = "xyz";
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EXPECT_EQ(map, SmallMap(ftl::init::map(-1, "xyz")(42, "???")(123, "abc")));
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}
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TEST(SmallMap, Construct) {
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{
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// Default constructor.
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SmallMap<int, std::string, 2> map;
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EXPECT_TRUE(map.empty());
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EXPECT_FALSE(map.dynamic());
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}
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{
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// In-place constructor with same types.
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SmallMap<int, std::string, 5> map =
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ftl::init::map<int, std::string>(123, "abc")(456, "def")(789, "ghi");
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EXPECT_EQ(map.size(), 3u);
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EXPECT_EQ(map.max_size(), 5u);
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EXPECT_FALSE(map.dynamic());
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EXPECT_EQ(map, SmallMap(ftl::init::map(123, "abc")(456, "def")(789, "ghi")));
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}
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{
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// In-place constructor with different types.
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SmallMap<int, std::string, 5> map =
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ftl::init::map<int, std::string>(123, "abc")(-1)(42, 3u, '?');
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EXPECT_EQ(map.size(), 3u);
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EXPECT_EQ(map.max_size(), 5u);
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EXPECT_FALSE(map.dynamic());
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EXPECT_EQ(map, SmallMap(ftl::init::map(42, "???")(123, "abc")(-1, "\0\0\0")));
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}
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{
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// In-place constructor with implicit size.
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SmallMap map = ftl::init::map<int, std::string>(123, "abc")(-1)(42, 3u, '?');
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static_assert(std::is_same_v<decltype(map), SmallMap<int, std::string, 3>>);
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EXPECT_EQ(map.size(), 3u);
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EXPECT_EQ(map.max_size(), 3u);
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EXPECT_FALSE(map.dynamic());
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EXPECT_EQ(map, SmallMap(ftl::init::map(-1, "\0\0\0")(42, "???")(123, "abc")));
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}
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}
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TEST(SmallMap, Find) {
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{
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// Constant reference.
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const ftl::SmallMap map = ftl::init::map('a', 'A')('b', 'B')('c', 'C');
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const auto opt = map.find('b');
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EXPECT_EQ(opt, 'B');
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const char d = 'D';
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const auto ref = map.find('d').value_or(std::cref(d));
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EXPECT_EQ(ref.get(), 'D');
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}
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{
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// Mutable reference.
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ftl::SmallMap map = ftl::init::map('a', 'A')('b', 'B')('c', 'C');
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const auto opt = map.find('c');
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EXPECT_EQ(opt, 'C');
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char d = 'd';
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const auto ref = map.find('d').value_or(std::ref(d));
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ref.get() = 'D';
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EXPECT_EQ(d, 'D');
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}
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{
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// Constant unary operation.
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const ftl::SmallMap map = ftl::init::map('a', 'x')('b', 'y')('c', 'z');
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EXPECT_EQ(map.find('c', [](char c) { return std::toupper(c); }), 'Z');
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}
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{
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// Mutable unary operation.
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ftl::SmallMap map = ftl::init::map('a', 'x')('b', 'y')('c', 'z');
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EXPECT_TRUE(map.find('c', [](char& c) { c = std::toupper(c); }));
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EXPECT_EQ(map, SmallMap(ftl::init::map('c', 'Z')('b', 'y')('a', 'x')));
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}
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}
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} // namespace android::test
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