73 lines
1.6 KiB
C++
73 lines
1.6 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "catch.hpp"
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#include "base/flat_map.h"
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#include <string>
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struct int_wrap {
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int value;
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};
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struct int_wrap_comparator {
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inline bool operator()(const int_wrap &a, const int_wrap &b) const {
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return a.value < b.value;
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}
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};
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using namespace std;
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TEST_CASE("flat_maps should keep items sorted by key", "[flat_map]") {
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base::flat_map<int, string> v;
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v.emplace(0, "a");
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v.emplace(5, "b");
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v.emplace(4, "d");
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v.emplace(2, "e");
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auto checkSorted = [&] {
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auto prev = v.begin();
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REQUIRE(prev != v.end());
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for (auto i = prev + 1; i != v.end(); prev = i, ++i) {
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REQUIRE(prev->first < i->first);
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}
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};
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REQUIRE(v.size() == 4);
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checkSorted();
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SECTION("adding item puts it in the right position") {
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v.emplace(3, "c");
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REQUIRE(v.size() == 5);
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REQUIRE(v.find(3) != v.end());
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checkSorted();
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}
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}
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TEST_CASE("flat_maps custom comparator", "[flat_map]") {
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base::flat_map<int_wrap, string, int_wrap_comparator> v;
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v.emplace({ 0 }, "a");
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v.emplace({ 5 }, "b");
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v.emplace({ 4 }, "d");
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v.emplace({ 2 }, "e");
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auto checkSorted = [&] {
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auto prev = v.begin();
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REQUIRE(prev != v.end());
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for (auto i = prev + 1; i != v.end(); prev = i, ++i) {
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REQUIRE(int_wrap_comparator()(prev->first, i->first));
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}
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};
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REQUIRE(v.size() == 4);
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checkSorted();
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SECTION("adding item puts it in the right position") {
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v.emplace({ 3 }, "c");
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REQUIRE(v.size() == 5);
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REQUIRE(v.find({ 3 }) != v.end());
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checkSorted();
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}
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}
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