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