54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
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/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#include "catch.hpp"
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#include "base/algorithm.h"
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TEST_CASE("push_back_safe_remove_if tests", "[base::algorithm]") {
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auto v = std::vector<int>();
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SECTION("doesn't change an empty vector") {
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base::push_back_safe_remove_if(v, [](int) { return true; });
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REQUIRE(v.empty());
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}
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v.insert(v.end(), { 1, 2, 3, 4, 5, 4, 3, 2, 1 });
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SECTION("allows to push_back from predicate") {
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base::push_back_safe_remove_if(v, [&v](int value) {
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v.push_back(value);
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return (value % 2) == 1;
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});
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auto expected = std::vector<int> { 2, 4, 4, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1 };
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REQUIRE(v == expected);
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}
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SECTION("allows to push_back while removing all") {
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base::push_back_safe_remove_if(v, [&v](int value) {
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if (value == 5) {
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v.push_back(value);
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}
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return true;
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});
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auto expected = std::vector<int> { 5 };
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REQUIRE(v == expected);
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}
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}
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