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/***************************************************************************
* Copyright (c) Johan Mabille, Sylvain Corlay and Wolf Vollprecht *
* Copyright (c) QuantStack *
* *
* Distributed under the terms of the BSD 3-Clause License. *
* *
* The full license is in the file LICENSE, distributed with this software. *
****************************************************************************/
#include "xtl/xtype_traits.hpp"
#include "gtest/gtest.h"
namespace xtl
{
using std::true_type;
using std::false_type;
TEST(xtype_traits, conjunction)
{
bool res;
res = conjunction<>::value;
EXPECT_EQ(res, true);
res = conjunction<false_type, false_type>::value;
EXPECT_EQ(res, false);
res = conjunction<false_type, true_type>::value;
EXPECT_EQ(res, false);
res = conjunction<true_type, false_type>::value;
EXPECT_EQ(res, false);
res = conjunction<true_type, true_type>::value;
EXPECT_EQ(res, true);
res = conjunction<true_type, true_type, true_type>::value;
EXPECT_EQ(res, true);
res = conjunction<true_type, true_type, false_type>::value;
EXPECT_EQ(res, false);
}
TEST(xtype_traits, disjunction)
{
bool res;
res = disjunction<>::value;
EXPECT_EQ(res, false);
res = disjunction<false_type, false_type>::value;
EXPECT_EQ(res, false);
res = disjunction<false_type, true_type>::value;
EXPECT_EQ(res, true);
res = disjunction<true_type, false_type>::value;
EXPECT_EQ(res, true);
res = disjunction<true_type, true_type>::value;
EXPECT_EQ(res, true);
res = disjunction<true_type, true_type, true_type>::value;
EXPECT_EQ(res, true);
res = disjunction<true_type, true_type, false_type>::value;
EXPECT_EQ(res, true);
res = disjunction<false_type, false_type, false_type>::value;
EXPECT_EQ(res, false);
}
template <class T, XTL_REQUIRES(xtl::is_integral<T>, xtl::is_signed<T>)>
int test_requires(T);
template <class T, XTL_REQUIRES_IMPL(xtl::is_integral<T>, xtl::is_signed<T>)>
int test_requires(T)
{
return 0;
}
template <class T, XTL_REQUIRES(xtl::is_integral<T>, xtl::negation<xtl::is_signed<T>>)>
int test_requires(T)
{
return 1;
}
template <class T, XTL_DISALLOW(xtl::is_integral<T>)>
int test_requires(T)
{
return 2;
}
TEST(xtype_traits, requires)
{
int i = 0;
unsigned int ui = 1u;
double d = 1.;
EXPECT_EQ(test_requires(i), 0);
EXPECT_EQ(test_requires(ui), 1);
EXPECT_EQ(test_requires(d), 2);
}
template <class T, XTL_EITHER(xtl::is_integral<T>, xtl::is_floating_point<T>)>
int test_either_disallow(T)
{
return 0;
}
template <class T, XTL_DISALLOW_ONE(xtl::is_integral<T>, xtl::is_floating_point<T>)>
int test_either_disallow(T)
{
return 1;
}
TEST(xtype_traits, either_disallow)
{
int i = 0;
float d = 1.;
int* p = &i;
EXPECT_EQ(test_either_disallow(i), 0);
EXPECT_EQ(test_either_disallow(d), 0);
EXPECT_EQ(test_either_disallow(p), 1);
}
TEST(xtype_traits, constify)
{
bool res = std::is_same<constify_t<int&>, const int&>::value;
EXPECT_TRUE(res);
res = std::is_same<constify_t<const int&>, const int&>::value;
EXPECT_TRUE(res);
res = std::is_same<constify_t<int*>, const int*>::value;
EXPECT_TRUE(res);
res = std::is_same<constify_t<const int*>, const int*>::value;
EXPECT_TRUE(res);
res = std::is_same<constify_t<int>, const int>::value;
EXPECT_TRUE(res);
res = std::is_same<constify_t<const int>, const int>::value;
EXPECT_TRUE(res);
}
TEST(xtype_traits, promote_type)
{
using time_type = std::chrono::system_clock::time_point;
EXPECT_TRUE((std::is_same<time_type, promote_type_t<time_type, time_type>>::value));
EXPECT_TRUE((std::is_same<int, promote_type_t<unsigned char, unsigned char>>::value));
EXPECT_TRUE((std::is_same<std::complex<double>, promote_type_t<unsigned char, std::complex<double>>>::value));
EXPECT_TRUE((std::is_same<std::complex<double>, promote_type_t<std::complex<float>, std::complex<double>>>::value));
}
}
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