File size: 2,570 Bytes
985c397 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | /// The MIT License (MIT)
/// Copyright (c) 2016 Peter Goldsborough
///
/// Permission is hereby granted, free of charge, to any person obtaining a copy
/// of this software and associated documentation files (the "Software"), to
/// deal in the Software without restriction, including without limitation the
/// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
/// sell copies of the Software, and to permit persons to whom the Software is
/// furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in
/// all copies or substantial portions of the Software.
///
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
/// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
/// IN THE SOFTWARE.
#include <chrono>
#include "gtest/gtest.h"
#include "lru/lru.hpp"
TEST(WrapTest, CanWrapMutableAndNonMutableLambdas) {
// This is purely to make sure both variants compile
LRU::wrap([](int x) { return x; })(5);
LRU::wrap([](int x) mutable { return x; })(5);
}
TEST(WrapTest, WrappingWorks) {
auto f = [x = 0](int _) mutable {
return ++x;
};
auto wrapped = LRU::wrap(f);
EXPECT_EQ(wrapped(69), 1);
EXPECT_EQ(wrapped(69), 1);
EXPECT_EQ(wrapped(42), 2);
EXPECT_EQ(wrapped(42), 2);
EXPECT_EQ(wrapped(50), 3);
}
TEST(WrapTest, CanPassCapacityArgumentToWrap) {
std::size_t call_count = 0;
auto f = [&call_count](int _) { return call_count += 1; };
auto wrapped1 = LRU::wrap(f, 1);
wrapped1(1);
EXPECT_EQ(call_count, 1);
wrapped1(1);
EXPECT_EQ(call_count, 1);
auto wrapped2 = LRU::wrap(f, 0);
wrapped1(1);
EXPECT_EQ(call_count, 1);
wrapped1(1);
EXPECT_EQ(call_count, 1);
}
TEST(WrapTest, CanPassTimeArgumentToTimedCacheWrap) {
using namespace std::chrono_literals;
std::size_t call_count = 0;
auto f = [&call_count](int _) { return call_count += 1; };
auto wrapped1 = LRU::wrap<decltype(f), LRU::TimedCache>(f, 100ms);
wrapped1(1);
EXPECT_EQ(call_count, 1);
wrapped1(1);
EXPECT_EQ(call_count, 1);
auto wrapped2 = LRU::timed_wrap(f, 0ms);
wrapped1(1);
EXPECT_EQ(call_count, 1);
wrapped1(1);
EXPECT_EQ(call_count, 1);
}
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