73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
/*!
|
|
* \file Tinvoke.cpp
|
|
*
|
|
* Copyright (C) 2018-2019 Christos Choutouridis
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as
|
|
* published by the Free Software Foundation, either version 3
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
#include <utl/utility/invoke.h>
|
|
#include <gtest/gtest.h>
|
|
#include <type_traits>
|
|
|
|
namespace test_meta {
|
|
using namespace utl;
|
|
|
|
/*
|
|
* Types to behave like Fixtures
|
|
*/
|
|
int Ifun(int i) { return i; }
|
|
struct Ifoo {
|
|
int operator() (int i) {
|
|
return i;
|
|
}
|
|
};
|
|
|
|
struct Ibar {
|
|
Ibar(int num) : num_(num) {}
|
|
int echo(int i) const { return i; }
|
|
int get() const { return num_; }
|
|
int num_;
|
|
};
|
|
|
|
/*
|
|
* Test invoke()
|
|
*/
|
|
TEST(Tinvoke, Invoke) {
|
|
Ifoo ifoo{};
|
|
const Ibar ibar{42};
|
|
|
|
EXPECT_EQ (42, invoke(Ifun, 42));
|
|
EXPECT_EQ (42, invoke([] () { return Ifun(42); }));
|
|
EXPECT_EQ (42, invoke(Ifoo{}, 42));
|
|
EXPECT_EQ (42, invoke(ifoo, 42));
|
|
EXPECT_EQ (42, invoke(&Ibar::echo, ibar, 42));
|
|
EXPECT_EQ (42, invoke(&Ibar::get, ibar));
|
|
|
|
EXPECT_EQ (true, (is_invocable<Ifoo, int>::value));
|
|
EXPECT_EQ (false, (is_invocable<Ifoo>::value));
|
|
EXPECT_EQ (false, (is_invocable<Ifoo, int, double>::value));
|
|
EXPECT_EQ (false, (is_invocable<Ibar, int>::value));
|
|
|
|
EXPECT_EQ (true, (is_invocable_r<int, Ifoo, int>::value));
|
|
EXPECT_EQ (false, (is_invocable_r<int*, Ifoo, int>::value));
|
|
EXPECT_EQ (false, (is_invocable_r<int, Ifoo>::value));
|
|
|
|
EXPECT_EQ (true, (std::is_same<int, invoke_result_t<Ifoo, int>>()));
|
|
EXPECT_EQ (true, (std::is_same<meta::nil_, invoke_result_t<Ifoo>>()));
|
|
EXPECT_EQ (true, (std::is_same<meta::nil_, invoke_result_t<Ifoo, int, double>>()));
|
|
|
|
}
|
|
}
|