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55 lines
2.2 KiB
C++
55 lines
2.2 KiB
C++
/*
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* Copyright Louis Dionne 2014
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE.md or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/hana/range.hpp>
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#include <boost/hana/detail/static_assert.hpp>
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#include <boost/hana/integral.hpp>
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#include <boost/hana/list.hpp>
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using namespace boost::hana;
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void test_Iterable() {
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BOOST_HANA_STATIC_ASSERT(is_empty(range(int_<0>, int_<0>)));
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BOOST_HANA_STATIC_ASSERT(!is_empty(range(int_<0>, int_<1>)));
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BOOST_HANA_STATIC_ASSERT(!is_empty(range(int_<0>, int_<2>)));
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BOOST_HANA_STATIC_ASSERT(head(range(int_<0>, int_<1>)) == int_<0>);
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BOOST_HANA_STATIC_ASSERT(head(range(int_<0>, int_<2>)) == int_<0>);
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BOOST_HANA_STATIC_ASSERT(tail(range(int_<0>, int_<1>)) == range(int_<1>, int_<1>));
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BOOST_HANA_STATIC_ASSERT(tail(range(int_<0>, int_<2>)) == range(int_<1>, int_<2>));
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BOOST_HANA_STATIC_ASSERT(tail(range(int_<0>, int_<3>)) == range(int_<1>, int_<3>));
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}
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void test_comparison() {
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BOOST_HANA_STATIC_ASSERT(range(int_<0>, int_<0>) == range(int_<0>, int_<0>));
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BOOST_HANA_STATIC_ASSERT(range(int_<0>, int_<0>) != range(int_<0>, int_<1>));
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BOOST_HANA_STATIC_ASSERT(range(int_<0>, int_<1>) != range(int_<0>, int_<0>));
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BOOST_HANA_STATIC_ASSERT(range(int_<0>, int_<1>) == range(int_<0>, int_<1>));
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BOOST_HANA_STATIC_ASSERT(range(int_<0>, int_<2>) != range(int_<0>, int_<1>));
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BOOST_HANA_STATIC_ASSERT(range(int_<0>, int_<2>) == range(int_<0>, int_<2>));
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BOOST_HANA_STATIC_ASSERT(range(int_<0>, int_<0>) == range(int_<2>, int_<2>));
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}
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constexpr struct {
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template <typename I>
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constexpr auto operator()(I i) const { return i + int_<1>; }
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} f{};
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void test_Functor() {
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BOOST_HANA_STATIC_ASSERT(fmap(f, range(int_<0>, int_<0>)) == list());
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BOOST_HANA_STATIC_ASSERT(fmap(f, range(int_<0>, int_<1>)) == list(f(int_<0>)));
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BOOST_HANA_STATIC_ASSERT(fmap(f, range(int_<0>, int_<2>)) == list(f(int_<0>), f(int_<1>)));
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BOOST_HANA_STATIC_ASSERT(fmap(f, range(int_<0>, int_<3>)) == list(f(int_<0>), f(int_<1>), f(int_<2>)));
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}
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int main() {
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test_Iterable();
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test_comparison();
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test_Functor();
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}
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